2004 COROLLA
ELECTRICAL WIRING DIAGRAM
Section Code
Page
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . A . . . .
2
HOW TO USE THIS MANUAL . . . . . . . . . . . . . . B . . . .
3
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . C . . . .
12
ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . D . . . .
17
GLOSSARY OF TERMS AND SYMBOLS . . . . E . . . .
18
RELAY LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . F . . . .
20
ELECTRICAL WIRING ROUTING . . . . . . . . . . . G . . . .
32
SYSTEM CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . H . . . .
47
GROUND POINT . . . . . . . . . . . . . . . . . . . . . . . . . . . I . . . .
194
POWER SOURCE (Current Flow Chart) . . . . . J . . . .
198
CONNECTOR LIST . . . . . . . . . . . . . . . . . . . . . . . . K . . . .
204
PART NUMBER OF CONNECTORS . . . . . . . . . L . . . .
210
OVERALL ELECTRICAL WIRING DIAGRAM . M . . . .
214
2003
All rights reserved. This book may not be
reproduced or copied, in whole or in part, without
the written permission of Toyota Motor
Corporation.
1
2004 COROLLA (EWD533U)
A INTRODUCTION
This manual consists of the following 13 sections:
No.
Section
Description
INDEX
Index of the contents of this manual.
INTRODUCTION
Brief explanation of each section.
B
HOW TO USE THIS
MANUAL
Instructions on how to use this manual.
C
TROUBLE–
SHOOTING
Describes the basic inspection procedures for electrical circuits.
D
ABBREVIATIONS
Defines the abbreviations used in this manual.
E
GLOSSARY OF
TERMS AND
SYMBOLS
Defines the symbols and functions of major parts.
F
RELAY LOCATIONS
Shows position of the Electronic Control Unit, Relays, Relay Block, etc.
This section is closely related to the system circuit.
G
ELECTRICAL
WIRING ROUTING
Describes position of Parts Connectors, Splice points, Ground points, etc.
This section is closely related to the system circuit.
INDEX
Index of the system circuits.
SYSTEM CIRCUITS
Electrical circuits of each system are shown from the power supply through ground
points. Wiring connections and their positions are shown and classified by code
according to the connection method. (Refer to the section, ”How to use this manual”).
The ”System Outline” and ”Service Hints” useful for troubleshooting are also contained
in this section.
I
GROUND POINT
Shows ground positions of all parts described in this manual.
J
POWER SOURCE
(Current Flow Chart)
Describes power distribution from the power supply to various electrical loads.
K
CONNECTOR LIST
Describes the form of the connectors for the parts appeared in this book.
This section is closely related to the system circuit.
L
PART NUMBER OF
CONNECTORS
Indicates the part number of the connectors used in this manual.
M
OVERALL
ELECTRICAL
WIRING DIAGRAM
Provides circuit diagrams showing the circuit connections.
A
H
2
2004 COROLLA (EWD533U)
HOW TO USE THIS MANUAL B
This manual provides information on the electrical circuits installed on vehicles by
dividing them into a circuit for each system.
The actual wiring of each system circuit is shown from the point where the power
source is received from the battery as far as each ground point. (All circuit
diagrams are shown with the switches in the OFF position.)
When troubleshooting any problem, first understand the operation of the circuit
where the problem was detected (see System Circuit section), the power source
supplying power to that circuit (see Power Source section), and the ground points
(see Ground Point section). See the System Outline to understand the circuit
operation.
When the circuit operation is understood, begin troubleshooting of the problem
circuit to isolate the cause. Use Relay Location and Electrical Wiring Routing
sections to find each part, junction block and wiring harness connectors, wiring
harness and wiring harness connectors, splice points, and ground points of each
system circuit. Internal wiring for each junction block is also provided for better
understanding of connection within a junction block.
Wiring related to each system is indicated in each system circuit by arrows
(from__, to__). When overall connections are required, see the Overall Electrical
Wiring Diagram at the end of this manual.
3
2004 COROLLA (EWD533U)
B HOW TO USE THIS MANUAL
∗ The system shown here is an EXAMPLE ONLY. It is different to the actual
circuit shown in the SYSTEM CIRCUITS SECTION.
[A]
Stop Light
From Power Source System (See Page 66)
15A
STOP
7.5A
GAUGE
4
IB
2
[B]
1
R L
3 IB
1 IB
[C]
2 IB
R L
L (S/D)
R (W/G)
W R
[G]
2
4
[E]
14 IE1
[D]
Rear
Lights
S6
Stop Light SW
1
I5
[F]
Y G
G W
L (S/D)
G W
13
G W
ABS ECU
C7
Combination
Meter
7
6
[J]
(Shielded)
R6
Rear Combination Light LH
2
H17
High Mounted
Stop Light
[K]
B18
W B
1
W B
BV1
W B
W B
1
BO
50
[L]
BL
[M]
2004 COROLLA (EWD533U)
W B
G R
3
W B
[I]
B18
Stop
Stop
R7
Rear Combination Light RH
G R
1
G R
BV1
4
11
G B
[H]
3
1
4
G R
2
4
L4
Light Failure Sensor
8
B
[A] : System Title
[H] : Indicates the wiring color.
Wire colors are indicated by an alphabetical code.
[B] : Indicates a Relay Block. No shading is used and
only the Relay Block No. is shown to distinguish it
from the J/B
Example:
Indicates Relay Block No.1
B
= Black
W = White
BR = Brown
L
= Blue
V
SB = Sky Blue
= Violet
R = Red
G = Green
LG = Light Green
[C] : (
) is used to indicate different wiring and
connector, etc. when the vehicle model, engine
type, or specification is different.
P
Y
GR = Gray
[D] : Indicates related system.
The first letter indicates the basic wire color and the
second letter indicates the color of the stripe.
= Pink
= Yellow
O = Orange
[E] : Indicates the wiring harness and wiring harness
connector. The wiring harness with male terminal is
shown with arrows (
).
Outside numerals are pin numbers.
Example:
L–Y
L
(Blue)
[I]
Female
Male (
)
Y
(Yellow)
: Indicates a wiring Splice Point (Codes are ”E” for the
Engine Room, ”I” for the Instrument Panel, and ”B”
for the Body).
The first letter of the code for each wiring harness
and wiring harness connector(s) indicates the
component’s location, e.g, ”E” for the Engine
Compartment, ”I” for the Instrument Panel and
Surrounding area, and ”B” for the Body and
Surrounding area.
When more than one code has the first and second
letters in common, followed by numbers (e.g, IH1,
IH2), this indicates the same type of wiring harness
and wiring harness connector.
[F] : Represents a part (all parts are shown in sky blue).
The code is the same as the code used in parts
position.
[G] : Junction Block (The number in the circle is the J/B
No. and the connector code is shown beside it).
Junction Blocks are shaded to clearly separate
them from other parts.
Example:
3C indicates that
it is inside
Junction Block
No.3
The Location of splice Point I 5 is indicated by the
shaded section.
[J] : Indicates a shielded cable.
[K] : Indicates the pin number of the connector.
The numbering system is different for female and
male connectors.
Example: Numbered in order
from upper left to
lower right
Female
Numbered in order
from upper right to
lower left
Male
[L] : Indicates a ground point.
The first letter of the code for each ground point(s)
indicates the component’s location, e.g, ”E” for the
Engine Compartment, ”I” for the Instrument Panel
and Surrounding area, and ”B” for the Body and
Surrounding area.
[M] : Page No.
5
2004 COROLLA (EWD533U)
B HOW TO USE THIS MANUAL
[N]
System Outline
Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.
When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flows
through the rear lights warning light to TERMINAL 4 of the light failure sensor.
Stop Light Disconnection Warning
When the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the current
flowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects the
disconnection and the warning circuit of the light failure sensor is activated.
As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lights
warning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warning
circuit on and holds the warning light on until the ignition SW is turned off.
[O]
Service Hints
S6 Stop Light SW
2–1 : Closed with the brake pedal depressed
L4 Light Failure Sensor
1, 2, 7–Ground : Approx. 12 volts with the stop light SW on
4, 8–Ground : Approx. 12 volts with the ignition SW at ON position
11–Ground : Always continuity
: Parts Location
[P]
Code
See Page
Code
See Page
Code
See Page
C7
34
L4
36
R7
37
H17
36
R6
37
S6
35
: Relay Blocks
[Q]
Code
1
See Page
18
Relay Blocks (Relay Block Location)
R/B No.1 (Instrument Panel Brace LH)
: Junction Block and Wire Harness Connector
[R]
Code
See Page
Junction Block and Wire Harness (Connector Location)
IB
20
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3C
22
Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH)
[S]
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
IE1
42
Floor Wire and Instrument Panel Wire (Left Kick Panel)
BV1
50
Luggage Room Wire and Floor Wire (Luggage Room Left)
[T]
: Ground Points
Code
See Page
Ground Points Location
BL
50
Under the Left Center Pillar
BO
50
Back Panel Center
[U]
: Splice Points
Code
I5
See Page
44
Wire Harness with Splice Points
Code
Cowl Wire
B18
See Page
50
6
2004 COROLLA (EWD533U)
Wire Harness with Splice Points
Luggage Room Wire
B
[N] : Explains the system outline.
[O] : Indicates values or explains the function for reference during troubleshooting.
[P] : Indicates the reference page showing the position on the vehicle of the parts in the system circuit.
Example : Part ”L4” (Light Failure Sensor) is on page 36 of the manual.
∗ The letter in the code is from the first letter of the part, and the number indicates its order in parts
starting with that letter.
Example : L 4
Á
Á
Parts is 4th in order
Light Failure Sensor
[Q] : Indicates the reference page showing the position on the vehicle of Relay Block Connectors in the system circuit.
Example : Connector ”1” is described on page 18 of this manual and is installed on the left side of the instrument
panel.
[R] : Indicates the reference page showing the position on the vehicle of J/B and Wire Harness in the system circuit.
Example : Connector ”3C” connects the Instrument Panel Wire and J/B No.3. It is described on page 22 of this
manual, and is installed on the instrument panel left side.
[S] : Indicates the reference page describing the wiring harness and wiring harness connector (the female wiring
harness is shown first, followed by the male wiring harness).
Example : Connector ”IE1” connects the floor wire (female) and Instrument panel wire (male). It is described on
page 42 of this manual, and is installed on the left side kick panel.
[T] : Indicates the reference page showing the position of the ground points on the vehicle.
Example : Ground point ”BO” is described on page 50 of this manual and is installed on the back panel center.
[U] : Indicates the reference page showing the position of the splice points on the vehicle.
Example : Splice point ”I5” is on the Cowl Wire Harness and is described on page 44 of this manual.
7
2004 COROLLA (EWD533U)
B HOW TO USE THIS MANUAL
The ground points circuit diagram shows the connections from all major parts to the respective ground points. When
troubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identify
the problem ground quickly. The relationship between ground points ( EA , IB and IC shown below) can also be
checked this way.
I GROUND POINT
W–B
FAN MAIN Relay
5
A/C Relay No.2
5
A/C Relay No.3
5
A
W–B
W–B
A
W–B
A/C Control Assembly
W–B
FAN MAIN Relay
W–B
Cigarette Lighter
5
E3
O/D Main SW
E3
Clock
Blower Motor
I6
W–B
W–B
A
A W–B
W–B
Blower SW
I6
A
W–B
A
W–B
Parking Brake SW
E3
J1
Junction
Connector
W–B
Radiator Fan Motor
E3
7
3B
W–B
Headlight Cleaner Relay
E2
W–B
Combination Meter
W–B
W–B
Headlight LH
E4
E5
W–B
W–B
E4
W–B
E5
W–B
Front Turn Signal Light LH
W–B
E4
W–B
W–B
Front Fog Light LH
3
3F
13
3G
W–B
W–B
E6
Brake Fluid Level SW
W–B
W–B
Door Lock Control SW
W–B
B4
Cruise Control ECU
Remote Control Mirror SW
Turn Signal Flasher
5
3E
W–B
Front Clearance Light LH
2
IA1
W–B
I2
1
3D
W–B
Front Clearance Light RH
W–B
Front Fog Light RH
W–B
E4
W–B
Front Turn Signal Light RH
Combination SW
7
3C
W–B
Headlight RH
W–B
6
3E
W–B
I4
W–B
Defogger SW
I2
W–B
I2
Combination SW
B4
W–B
W–B
W–B
15 W–B
W–B
B5
ID1
W–B
W–B
W–B
Unlock Warning SW
I5
10 EA2
Door Lock Control Relay
W–B
I5
W–B
B4
Door Lock Motor RH
W–B
W–B
W–B
Door Courtesy SW RH
I5
W–B
B5
EA
W–B
I4
8 W–B
I8
IB1
W–B
W–B
A/C Amplifier
Door Courtesy SW LH
B5
W–B
Door Lock Control SW
B5
W–B
W–B
W–B
Idle–Up SW
Power Window Control
Relay
W–B
W–B
W–B
Blower Resistor
Power Window Master SW
Door Lock Motor LH
W–B (4A–GZE)
4
4
3
IC3
W–B
W–B
BR
Radio and Player
Fuel Control SW
I5
4
4
I5
W–B
Woofer Speaker Amplifier
BR
W–B
4
BR
BR
I3
4
BR
Combination Meter
I3
BR
Fuel Sender
W–B
4
BR
BR
Auto Antenna Motor
Combination Meter
5
BA1
W–B
HEATER Relay
IB
∗
IC
The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
8
2004 COROLLA (EWD533U)
B
The ”Current Flow Chart” section, describes which parts each power source (fuses, fusible links, and circuit breakers)
transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each system
are explained. Since all System Circuit diagrams start from the power source, the power source system must be fully
understood.
J POWER SOURCE (Current Flow Chart)
The chart below shows the route by which current flows from the battery to each electrical source
(Fusible Link, Circuit Breaker, Fuse, etc.) and other parts.
10A ECU–B
Short Pin
2
2
7.5A DOME
15A EFI
30A AM2
Battery
2
Fusible Link Block
6
10A HAZARD
2
20A RADIO NO.1
S2
Starter
10A HORN
100A ALT
6
60A ABS
5
Engine Room R/B (See Page 20)
Fuse
20A
10A
System
Page
STOP
ABS
ABS and Traction Control
Cruise Control
Electronically Controlled Transmission
Multiplex Communication System
194
187
180
166
210
DOME
Cigarette Lighter
Combination Meter
Headlight
Interior Light
Key Reminder and Seat Belt Warning
Light Auto Turn Off
Theft Deterrent and Door Lock Control
214
230
112
122
Power Source
40A DOOR LOCK CB
1.25B FL MAIN
W
W
7.5A DOME
W
W
2
2
W
B
B
7
EB1
W
I2
W
1
I2
B
W
1
15A HAZ–RADIO
W
2
W
E7
2
8
4
AM1
2
6
EB1
W–R
W–R
AM2
7.5A AM2
B
1
TAIL
Relay
2
E7
B
2
B
4
STARTER Relay
1
3
2
4
I8
Ignition SW
4
B–W
2
3
1
1
W–B
2
3
1
G
15A TAIL
B–W
G
1
2
20A DEFOG
B–Y
2
1
W–R
1
B
2
2
W–B
2
G–W
B
INJECTION Relay
1
3
IG1
2
ACC
B–O
IG2
B
2
B
R
1
1
W
I2
50A MAIN
E7
E7
W–L
1
W
Battery
3 EA2 1 EA1
W
2
1
1
W
W
E6
15A RAD CIG
B–Y
1
∗
P–L
1
The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
9
2004 COROLLA (EWD533U)
B HOW TO USE THIS MANUAL
K CONNECTOR LIST
I14
I15
Dark Gray
Gray
1
1
2
[A]
I16
J1
J2
Black
2
A
A
1 2
A
A
A
A B B
D D
A A B CC CD D
A
6 7 8
[B]
J3
J4
K1
K2
L1
1 2
1 2
Dark Gray
A
A A
A A A A A
A B B
DD
A A B CC CDD
L2
L3
L4
M1
M2
1 2 3
4 5
6 7 8 9 101112
1
2
3 45 6 78
M3
1
2
1
1 2
3 4
2
M4
[D]
N1
Gray
1 2 3
[C]
Black
Gray
1
1
1
7
5
6
2 3 4
8 9 10
N2
O1
O2
Gray
Black
Dark Gray
1
2
1
1
[A] : Indicates connector to be connected to a part. (The numeral indicates the pin No.)
[B] : Junction Connector
Indicates a connector which is connected to a short terminal.
Junction Connector
Junction connector in this manual include a short terminal which is
connected to a number of wire harnesses. Always perform
inspection with the short terminal installed. (When installing the
wire harnesses, the harnesses can be connected to any position
within the short terminal grouping. Accordingly, in other vehicles,
the same position in the short terminal may be connected to a wire
harness from a different part.)
Wire harness sharing the same short terminal grouping have the
same color.
Same Color
Short Terminal
[C] : Parts Code
The first letter of the code is taken from the first letter of part, and the numbers indicates its order in parts which
start with the same letter.
[D] : Connector Color
Connectors not indicated are milky white in color.
10
2004 COROLLA (EWD533U)
B
L PART NUMBER OF CONNECTORS
Code
Part Name
Part Number
Code
D4
Part Name
Diode (Courtesy)
Part Number
A1
A/C Ambient Temp. Sensor
90980–11070
A2
A/C Condenser Fan Motor
90980–11237
D5
Diode (Interior Light)
90980–10962
A3
A/C Condenser Fan Relay
90980–10940
D6
Diode (Moon Roof)
90980–11608
90980–10848
A4
A/C Condenser Fan Resistor
90980–10928
D7
Door Lock Control Relay
A5
A/C Magnetic Clutch
90980–11271
D8
Door Lock Control SW LH
A6
A/T Oil Temp. Sensor
90980–11413
D9
Door Lock Control SW RH
90980–11608
90980–11148
ABS Actuator
[B]
90980–11151
[C]
D10
Door Courtesy SW LH
A8
ABS Actuator
90980–11009
D11
Door Courtesy SW RH
A9
ABS Speed Sensor Front LH
90980–10941
D12
Door Courtesy SW Front LH
A10
ABS Speed Sensor Front RH
90980–11002
D13
Door Courtesy SW Front RH
A11
Airbag Sensor Front LH
D14
Door Courtesy SW Rear LH
A12
Airbag Sensor Front RH
A13
Airbag Squib
A7
[A]
90980–11097
90980–11156
90980–11856
D15
Door Courtesy SW Rear RH
90980–11194
D16
Door Key Lock and Unlock SW LH
90980–11070
D17
Door Key Lock and Unlock SW RH
90980–11170
[A] : Part Code
[B] : Part Name
[C] : Part Number
Toyota Part Number are indicated.
Not all of the above part numbers of the connector are established for the supply.
11
2004 COROLLA (EWD533U)
C TROUBLESHOOTING
To Ignition SW
IG Terminal
Fuse
[A]
SW 1
Voltmeter
[B]
VOLTAGE CHECK
(a) Establish conditions in which voltage is present at the check
point.
Example:
[A] – Ignition SW on
[B] – Ignition SW and SW 1 on
[C] – Ignition SW, SW 1 and Relay on (SW 2 off)
(b) Using a voltmeter, connect the negative lead to a good ground
point or negative battery terminal, and the positive lead to the
connector or component terminal.
This check can be done with a test light instead of a voltmeter.
Relay
[C]
Solenoid
SW 2
CONTINUITY AND RESISTANCE CHECK
(a) Disconnect the battery terminal or wire so there is no voltage
between the check points.
(b) Contact the two leads of an ohmmeter to each of the check
points.
Ohmmeter
SW
If the circuit has diodes, reverse the two leads and check
again.
When contacting the negative lead to the diode positive side
and the positive lead to the negative side, there should be
continuity.
When contacting the two leads in reverse, there should be no
continuity.
Ohmmeter
Diode
(c) Use a volt/ohmmeter with high impedance (10 kΩ/V
minimum) for troubleshooting of the electrical circuit.
Digital Type
Analog Type
12
2004 COROLLA (EWD533U)
C
To Ignition SW
IG Terminal
Test Light
Fuse Case
Short [A]
SW 1
Short [B]
Disconnect
Disconnect
Light
(a) Remove the blown fuse and disconnect all loads of the fuse.
(b) Connect a test light in place of the fuse.
(c) Establish conditions in which the test light comes on.
Example:
[A] – Ignition SW on
[B] – Ignition SW and SW 1 on
[C] – Ignition SW, SW 1 and Relay on (Connect the
Relay) and SW 2 off (or Disconnect SW 2)
(d) Disconnect and reconnect the connectors while watching the
test light.
The short lies between the connector where the test light
stays lit and the connector where the light goes out.
(e) Find the exact location of the short by lightly shaking the
problem wire along the body.
CAUTION:
Relay
Short [C]
Disconnect
SW 2
FINDING A SHORT CIRCUIT
(a) Do not open the cover or the case of the ECU unless
absolutely necessary. (If the IC terminals are touched,
the IC may be destroyed by static electricity.)
(b) When replacing the internal mechanism (ECU part) of
the digital meter, be careful that no part of your body or
clothing comes in contact with the terminals of leads
from the IC, etc. of the replacement part (spare part).
Solenoid
DISCONNECTION OF MALE AND FEMALE
CONNECTORS
To pull apart the connectors, pull on the connector itself, not
the wire harness.
HINT : Check to see what kind of connector you are
disconnecting before pulling apart.
Pull Up
Pull Up
Press Down
Press Down
13
2004 COROLLA (EWD533U)
C TROUBLESHOOTING
HOW TO REPLACE TERMINAL
(with terminal retainer or secondary locking device)
Reference:
1. PREPARE THE SPECIAL TOOL
10
3
1
HINT : To remove the terminal from the connector, please
construct and use the special tool or like object shown on
the left.
2. DISCONNECT CONNECTOR
1
Example:
(Case 1)
0.2
(mm)
Up
Tool
3. DISENGAGE THE SECONDARY LOCKING DEVICE OR
TERMINAL RETAINER.
(a) Locking device must be disengaged before the terminal
locking clip can be released and the terminal removed from
the connector.
(b) Use a special tool or the terminal pick to unlock the secondary
locking device or terminal retainer.
NOTICE:
Do not remove the terminal retainer from connector body.
Terminal Retainer
[A]
Terminal Retainer
For Non–Waterproof Type Connector
HINT : The needle insertion position varies according to the
connector’s shape (number of terminals etc.), so
check the position before inserting it.
[Retainer at Full Lock Position]
Stopper
”Case 1”
Raise the terminal retainer up to the temporary lock
position.
Terminal
Retainer
[Retainer at Temporary Lock Position]
Example:
(Case 2)
Secondary
Locking Device
”Case 2”
Open the secondary locking device.
14
2004 COROLLA (EWD533U)
C
Tool
Tab
Tab
Example:
(Case 1)
[B]
Terminal
Retainer
Tool
[Male]
Access Hole
(
Mark)
Tool
For Waterproof Type Connector
HINT : Terminal retainer color is different
according to connector body.
Example:
Terminal Retainer
Black or White
Black or White
Gray or White
: Connector Body
: Gray
: Dark Gray
: Black
[Female]
”Case 1”
Type where terminal retainer is pulled
up to the temporary lock position (Pull
Type).
Insert the special tool into the terminal
retainer access hole (Mark) and pull
the terminal retainer up to the
temporary lock position.
HINT : The needle insertion position varies
according to the connector’s shape
(Number of terminals etc.), so check
the position before inserting it.
Retainer
at Full Lock Position
Retainer
at Temporary Lock Position
[Male]
Example:
(Case 2)
[Female]
”Case 2”
Type which cannot be pulled as far as
Power Lock insert the tool straight into
the access hole of terminal retainer as
shown.
Terminal Retainer
Tool
Tool
[Male]
Press Down
Press Down
[Female]
15
2004 COROLLA (EWD533U)
C TROUBLESHOOTING
Push the terminal retainer down to the temporary lock position.
Retainer at
Full Lock Position
Retainer at
Temporary Lock Position
[Male]
[Female]
(c) Release the locking lug from terminal and pull the terminal out
from rear.
Locking Lug
Tool
4. INSTALL TERMINAL TO CONNECTOR
(a) Insert the terminal.
HINT:
1. Make sure the terminal is positioned correctly.
2. Insert the terminal until the locking lug locks firmly.
3. Insert the terminal with terminal retainer in the temporary lock
position.
(b) Push the secondary locking device or terminal retainer in to
the full lock position.
5. CONNECT CONNECTOR
16
2004 COROLLA (EWD533U)
ABBREVIATIONS D
ABBREVIATIONS
The following abbreviations are used in this manual.
A/C
=
Air Conditioning
A/T
=
Automatic Transaxle
ABS
=
Anti–Lock Brake System
ECU
=
Electronic Control Unit
ESA
=
Electronic Spark Advance
EVAP
=
Evaporative Emission
IAC
=
Idle Air Control
IC
=
Integrated Circuit
J/B
=
Junction Block
LED
=
Light Emitting Diode
LH
=
Left–Hand
M/T
=
Manual Transaxle
O/D
=
Overdrive
R/B
=
Relay Block
RH
=
Right–Hand
SFI
=
Sequential Multiport Fuel Injection
SRS
=
Supplemental Restraint System
SW
=
Switch
TEMP.
=
Temperature
TVIP
=
TOYOTA Vehicle Intrusion Protection
VSV
=
Vacuum Switching Valve
VVT
=
Variable Valve Timing
w/
=
With
w/o
=
Without
∗ The titles given inside the components are the names of the terminals (terminal codes) and are not treated as being
abbreviations.
17
2004 COROLLA (EWD533U)
E GLOSSARY OF TERMS AND SYMBOLS
GROUND
The point at which wiring attaches to
the Body, thereby providing a return
path for an electrical circuit; without a
ground, current cannot flow.
BATTERY
Stores chemical energy and
converts it into electrical energy.
Provides DC current for the auto’s
various electrical circuits.
CAPACITOR (Condenser)
A small holding unit for temporary
storage of electrical voltage.
CIGARETTE LIGHTER
An electric resistance heating
element.
HEADLIGHTS
Current flow causes a headlight
1. SINGLE
filament to heat up and emit light. A
FILAMENT
headlight may have either a single
(1) filament or a double (2) filament
2. DOUBLE
FILAMENT
CIRCUIT BREAKER
Basically a reusable fuse, a circuit
breaker will heat and open if too
much current flows through it.
Some units automatically reset when
cool, others must be manually reset.
HORN
An electric device which sounds a
loud audible signal.
DIODE
A semiconductor which allows
current flow in only one direction.
IGNITION COIL
Converts low–voltage DC current
into high–voltage ignition current for
firing the spark plugs.
DIODE, ZENER
LIGHT
Current flow through a filament
causes the filament to heat up and
emit light.
A diode which allows current flow in one
direction but blocks reverse flow only up
to a specific voltage. Above that potential,
it passes the excess voltage. This acts as
a simple voltage regulator.
PHOTODIODE
The photodiode is a semiconductor
which controls the current flow
according to the amount of light.
LED (LIGHT EMITTING DIODE)
Upon current flow, these diodes emit
light without producing the heat of a
comparable light.
DISTRIBUTOR, IIA
Channels high–voltage current from
the ignition coil to the individual
spark plugs.
METER, ANALOG
Current flow activates a magnetic
coil which causes a needle to move,
thereby providing a relative display
against a background calibration.
FUSE
METER, DIGITAL
Current flow activates one or many
LED’s, LCD’s, or fluorescent
displays, which provide a relative or
digital display.
A thin metal strip which burns through
when too much current flows through it,
thereby stopping current flow and
protecting a circuit from damage.
FUEL
FUSIBLE LINK
(for Medium Current Fuse)
(for High Current Fuse or
Fusible Link)
A heavy–gauge wire placed in high
amperage circuits which burns through on
overloads, thereby protecting the circuit.
The numbers indicate the crosssection
surface area of the wires.
M
18
2004 COROLLA (EWD533U)
MOTOR
A power unit which converts
electrical energy into mechanical
energy, especially rotary motion.
E
RELAY
Basically, an electrically operated
1. NORMALLY switch which may be normally
CLOSED closed (1) or open (2).
Current flow through a small coil
creates a magnetic field which either
opens or closes an attached switch.
SPEAKER
An electromechanical device which
creates sound waves from current
flow.
2. NORMALLY
OPEN
SWITCH, MANUAL
1. NORMALLY
OPEN
RELAY, DOUBLE THROW
A relay which passes current
through one set of contacts or the
other.
Opens and closes
circuits,
i it thereby
th b
stopping (1) or
allowing (2) current
flow.
2. NORMALLY
CLOSED
RESISTOR
An electrical component with a fixed
resistance, placed in a circuit to
reduce voltage to a specific value.
SWITCH, DOUBLE THROW
A switch which continuously passes
current through one set of contacts
or the other.
RESISTOR, TAPPED
A resistor which supplies two or
more different non adjustable
resistance values.
SWITCH, IGNITION
A key operated switch with several
positions which allows various
circuits, particularly the primary
ignition circuit, to become
operational.
RESISTOR, VARIABLE or RHEOSTAT
A controllable resistor with a variable
rate of resistance.
Also called a potentiometer or
rheostat.
SENSOR (Thermistor)
A resistor which varies its resistance
with temperature.
SWITCH, WIPER PARK
Automatically returns wipers to the
stop position when the wiper switch
is turned off.
SENSOR, SPEED
Uses magnetic impulses to open
and close a switch to create a signal
for activation of other components.
TRANSISTOR
A solidstate device typically used as
an electronic relay; stops or passes
current depending on the voltage
applied at ”base”.
(Reed Switch Type)
SHORT PIN
Used to provide an unbroken
connection within a junction block.
SOLENOID
An electromagnetic coil which forms
a magnetic field when current flows,
to move a plunger, etc.
WIRES
Wires are always drawn as
(1) NOT
straight lines on wiring
CONNECTED diagrams.
Crossed wires (1) without a
black dot at the junction
are
j
nott joined;
j i d
crossed wires (2) with a
black dot or octagonal ( )
(2) SPLICED
mark at the junction are
spliced (joined)
connections.
19
2004 COROLLA (EWD533U)
F RELAY LOCATIONS
[Engine Compartment]
[Body]
20
2004 COROLLA (EWD533U)
F
[Instrument Panel]
21
2004 COROLLA (EWD533U)
F RELAY LOCATIONS
1
: Engine Room R/B
: Engine Room J/B
Engine Compartment Left (See Page 20)
22
2004 COROLLA (EWD533U)
Memo
23
2004 COROLLA (EWD533U)
F RELAY LOCATIONS
: Instrument Panel J/B
Lower Finish Panel (See Page 21)
24
2004 COROLLA (EWD533U)
F
25
2004 COROLLA (EWD533U)
F RELAY LOCATIONS
[Instrument Panel J/B Inner Circuit]
26
2004 COROLLA (EWD533U)
F
27
2004 COROLLA (EWD533U)
F RELAY LOCATIONS
3
: RH R/B
: RH J/B
Right Side of the Instrument Panel Reinforcement
(See Page 21)
28
2004 COROLLA (EWD533U)
F
[RH J/B Inner Circuit]
29
2004 COROLLA (EWD533U)
F RELAY LOCATIONS
: Center J/B
Behind the Combination Meter (See Page 21)
30
2004 COROLLA (EWD533U)
F
[Center J/B Inner Circuit]
31
2004 COROLLA (EWD533U)
G ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
A 1 A/C Magnetic Clutch
A 2 A/T Shift Lever Position SW
Back–Up Light SW
Park/Neutral Position SW
A 3 ABS Speed Sensor Front LH
A 4 ABS Speed Sensor Front RH
A 5 Airbag Sensor Front LH
A 6 Airbag Sensor Front RH
A 7 Ambient Temp. Sensor
F 1 Front Fog Light LH
F 2 Front Fog Light RH
F 3 Front Parking Light LH
Front Turn Signal Light LH
F 4 Front Parking Light RH
Front Turn Signal Light RH
F 5 Front Washer Motor
F 6 Front Wiper Motor
G 1 Generator
G 2 Generator
B 1 Back–Up Light SW
B 2 Brake Fluid Level Warning SW
C
C
C
C
1
2
3
4
H
H
H
H
H
H
Camshaft Position Sensor
Camshaft Timing Oil Control Valve (VVT)
Crankshaft Position Sensor
Cruise Control Actuator
1
2
3
4
5
6
Headlight LH (High)
Headlight LH (Low)
Headlight RH (High)
Headlight RH (Low)
Heated Oxygen Sensor (Bank 1 Sensor 1)
Horn
E 1 Electronically Controlled Transmission Solenoid
E 2 Engine Coolant Temp. Sensor
32
2004 COROLLA (EWD533U)
G
Position of Parts in Engine Compartment
I
I
I
I
I
I
I
I
I
1
2
3
4
5
6
7
8
9
Idle Air Control Valve
Ignition Coil and Igniter No.1
Ignition Coil and Igniter No.2
Ignition Coil and Igniter No.3
Ignition Coil and Igniter No.4
Injector No.1
Injector No.2
Injector No.3
Injector No.4
P 1 Power Steering Oil Pressure SW
P 2 Pressure SW
R 1 Radiator Fan Motor
R 2 Radiator Fan Resistor
S 1 Skid Control ECU with Actuator
S 2 Starter
S 3 Starter
J 1 Junction Connector
T 1 Throttle Position Sensor
K 1 Knock Sensor
M 1 Mass Air Flow Meter
V 1 Vehicle Speed Sensor (Combination Meter)
V 2 VSV (Canister Closed Valve)
V 3 VSV (EVAP)
N 1 Noise Filter (Ignition)
W 1 Washer Level Sensor
O 1 Oil Pressure SW
33
2004 COROLLA (EWD533U)
G ELECTRICAL WIRING ROUTING
Position of Parts in Instrument Panel
A 8 A/C SW
Air Inlet Control SW
Defroster Mode Detection SW
A 10 A/T Shift Lever Illumination
O/D Main SW
A 11 Air Inlet Control Servo Motor
A 12 Airbag Sensor Assembly
A 13 Airbag Sensor Assembly
A 14 Airbag Sensor Assembly
A 15 Airbag Squib (Front Passenger Airbag Assembly)
A 16 Airbag Squib (Steering Wheel Pad)
A 17 Antenna Amplifier
A 18 Automatic Light Control Sensor
B
B
B
B
3
4
5
6
Blower Motor
Blower Resistor
Blower SW
Buckle SW LH
Seat Position Sensor
B 7 Buckle SW RH
Occupant Detection Sensor
C 5 Cigarette Lighter
Power Outlet (Front)
C 6 Cigarette Lighter Illumination
C 7 Clock
C 8 Clutch Start SW
C 9 Combination Meter
C10 Combination SW
C 11 Combination SW
C12 Combination SW
C13 Cruise Control Clutch SW
C14 Cruise Control ECU
D 1 Data Link Connector 3
D 2 Daytime Running Light Relay
E
E
E
E
3
4
5
6
Engine Control Module
Engine Control Module
Engine Control Module
Engine Control Module
34
2004 COROLLA (EWD533U)
G
Position of Parts in Instrument Panel
F 7 Front Passenger Seat Belt Warning Light
G 3 Glass Breakage Sensor ECU
H 7 Hazard SW
H 8 Heated Oxygen Sensor (Bank 1 Sensor 2)
I 10 Ignition SW
I 11 Integration Relay
J
J
J
J
J
J
2
3
4
5
6
7
Junction Connector
Junction Connector
Junction Connector
Junction Connector
Junction Connector
Junction Connector
R
R
R
R
R
3
4
5
6
7
Radio and Player
Radio and Player
Rear Window Defogger SW
Remote Control Mirror SW
Rheostat
S
S
S
S
S
S
4
5
6
7
8
9
Security Indicator
Shift Lock Control ECU
Side Airbag Squib LH
Side Airbag Squib RH
Starter Cut Relay
Stop Light SW
T 2 Turn Signal Flasher Relay
T 3 TVIP ECU
U 1 Unlock Warning SW
P 3 Parking Brake SW
P 4 Power Outlet (Rear)
35
2004 COROLLA (EWD533U)
G ELECTRICAL WIRING ROUTING
Position of Parts in Body
A 19 ABS Speed Sensor Rear LH
A 20 ABS Speed Sensor Rear RH
D
D
D
D
D
D
3
4
5
6
7
8
D 9
D10
D 11
D12
D13
D14
Door Control Receiver
Door Courtesy SW Front LH
Door Courtesy SW Front RH
Door Courtesy SW Rear LH
Door Courtesy SW Rear RH
Door Key Lock and Unlock SW Front LH
Door Lock Motor Front LH
Door Unlock Detection SW Front LH
Door Key Lock and Unlock SW Front RH
Door Lock Motor Front RH
Door Unlock Detection SW Front RH
Door Lock Control SW Front LH
Door Lock Control SW Front LH
Power Window Master SW
Door Lock Control SW Front RH
Door Lock Motor Rear LH
Door Lock Motor Rear RH
F 8 Front Door Speaker LH
F 9 Front Door Speaker RH
F 10 Fuel Pump
Fuel Sender
H 9 High Mounted Stop Light
I 12 Inner Mirror
Personal Light
I 13 Interior Light
J 8 Junction Connector
J 9 Junction Connector
J 10 Junction Connector
L
L
L
L
1
2
3
4
License Plate Light LH
License Plate Light RH
Luggage Compartment Light
Luggage Compartment Light SW
36
2004 COROLLA (EWD533U)
G
Position of Parts in Body
M 2 Moon Roof Control Relay and SW
Personal Light
M 3 Moon Roof Motor and Limit SW
N 2 Noise Filter (Rear Window Defogger)
P 5
P 6
P 7
P 8
P 9
P 10
P 11
P 12
P 13
Power Window Control SW Front RH
Power Window Control SW Rear LH
Power Window Control SW Rear RH
Power Window Motor Front LH
Power Window Motor Front RH
Power Window Motor Rear LH
Power Window Motor Rear RH
Pretensioner LH
Pretensioner RH
R 9
R10
R 11
R12
R13
R14
R15
R16
R17
R18
Rear Combination Light LH
Rear Combination Light LH
Rear Combination Light RH
Rear Combination Light RH
Rear Speaker LH
Rear Speaker RH
Rear Window Defogger
Rear Window Defogger
Remote Control Mirror LH
Remote Control Mirror RH
S 10 Side Airbag Sensor LH
S 11 Side Airbag Sensor RH
T 4 Tweeter LH
T 5 Tweeter RH
V 4 Vapor Pressure Sensor
V 5 VSV (Vapor Pressure Sensor)
37
2004 COROLLA (EWD533U)
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness
: Location of Ground Points
: Location of Splice Points
38
2004 COROLLA (EWD533U)
G
Connector Joining Wire Harness and Wire Harness
EA1
1 2 3 4 5
6 7 8 9 10
5 4 3 2 1
10 9 8 7 6
Code
Joining Wire Harness and Wire Harness (Connector Location)
EA1
Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
39
2004 COROLLA (EWD533U)
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness
: Location of Ground Points
40
2004 COROLLA (EWD533U)
G
Connector Joining Wire Harness and Wire Harness
Code
Joining Wire Harness and Wire Harness (Connector Location)
IA1
IA2
IA4
Engine
g
Room Main Wire and Instrument Panel Wire ((Left Side of the Instrument Panel Reinforcement))
IA5
IA6
IB1
Engine Room Main Wire and Floor Wire (Cowl Side Panel LH)
IC1
IC2
Front Door LH Wire and Instrument Panel Wire (Left
(
Kick Panel))
IC3
41
2004 COROLLA (EWD533U)
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness
: Location of Splice Points
42
2004 COROLLA (EWD533U)
G
Connector Joining Wire Harness and Wire Harness
Code
ID1
ID2
Joining Wire Harness and Wire Harness (Connector Location)
Instrument Panel Wire and Floor Wire (Left Kick Panel)
IE1
Instrument Panel Wire and Instrument Panel No.4 Wire (Behind the Combination Meter)
IF1
Console Box Wire and Instrument Panel Wire (Under the Instrument Panel Center)
IG1
Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever)
IH1
Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit)
II1
II2
IJ1
IJ2
IK1
Engine Wire and Instrument Panel Wire (Blower Unit RH)
Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
Roof Wire and Instrument Panel Wire (Left Side of the Instrument Panel)
43
2004 COROLLA (EWD533U)
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness
: Location of Ground Points
: Location of Splice Points
44
2004 COROLLA (EWD533U)
G
Connector Joining Wire Harness and Wire Harness
BA1
12
3
456 78
BB1
12
3
456 7 8
3
21
8 7 654
BD1
1 2
BC1
3
21
87 6 54
1 2
BE1
2 1
1
2
Gray
2 1
BF1
2
1
1
2
Code
Joining Wire Harness and Wire Harness (Connector Location)
BA1
Rear Door LH Wire and Floor Wire (Left Center Pillar)
BB1
Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar)
BC1
Skid Control Sensor Wire LH and Floor Wire (Quarter Wheel House LH)
BD1
Skid Control Sensor Wire RH and Floor Wire (Quarter Wheel House RH)
BE1
Speaker Tweeter LH Wire and Front Door LH Wire (Inside of the Front Door LH)
BF1
Speaker Tweeter RH Wire and Front Door RH Wire (Inside of the Front Door RH)
2
1
45
2004 COROLLA (EWD533U)
Memo
46
2004 COROLLA (EWD533U)
SYSTEM CIRCUITS H
2004 COROLLA
ELECTRICAL WIRING DIAGRAM
SYSTEM CIRCUITS
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Glare–Resistant EC Mirror with Compass . . . . . . . . . . . . . . . . . . .
Back–Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronically Controlled Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Reminder Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Light Reminder Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Moon Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio and Player . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Window Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Belt Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TVIP System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wireless Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page
154
188
112
96
56
104
106
180
148
118
142
58
76
70
192
102
52
86
90
168
168
140
108
48
114
186
176
174
110
172
166
159
52
94
82
78
134
98
126
47
2004 COROLLA (EWD533U)
Power Source
1
1B
1
2
30A ABS NO. 1
1
1
1D
B–G
1
B
G2
Generator
R
W
W
1
1
2
1
2
L
30A POWER
40A ABS NO. 2
1
2
1
12
IF
B–W
W
25A AM1
30A RDI FAN
7. 5A OBD
1
2
1
B
G
10A ECU–B
15A FOG
15A P/POINT
1
1A
1
2
1
1C
1
IB
W
15A STOP
100A ALT
1
2
1
15A TAIL
W
5A ALT–S
1
25A DOOR
2
1
R–W
B
15A EFI
1
2
1
B–R
2
IA4
3
IM
B–R
6
IM
B
15A AM2
30A MAIN
1
2
1
G–W
1
1
FL MAIN
2. 0L
1
2
3
5
1
R–Y
R
10A HAZARD
1
2
R
1
R–B
1
HEAD Relay
40A HEAD MAIN
1
2
1
B–W
R–B
1
1
2
1
L–W
R–B
Battery
10A HORN
1
15A DOME
3
5
1
2
DIMMER Relay
48
2004 COROLLA (EWD533U)
R
1
1
W–R
1
2
5
3
1
2
10A M–HTR/DEF I–UP
30A DEFOG
DEF Relay
HTR Relay
1
IA
R–W
1
1 AM1
3
1
5
3
3
15A CIG
IG1 2 B–Y
Noise Filter
1
B
5 AM2
L–W
3
2
IG2 6 B–W
ST2 4
3
4
W–B
W
B–W
2
40A HEATER
6
IF
ACC 3 L–R
2
IM
2
3
B
W
5
IM
R
10A A/C
I10
Ignition SW
5
3
1
2
10A GAUGE
2
IF
10A ECU–IG
IG1 Relay
15A WASHER
25A WIPER
4 IF
1
2
1
10 IH
R–W
1
2
1
R
W–B
1
W–B
R–B
W–B
10A HEAD LH LWR
10A HEAD RH LWR
1
2
1
R–W
10A HEAD LH UPR
R
1
1
2
1
R
A
10A HEAD RH UPR
J6
Junction
Connector
IE
A
A
J7
Junction
Connector
IG
49
2004 COROLLA (EWD533U)
Power Source
Service Hints
HEAD Relay
3–5 : Closed with the light control SW at Head position or the dimmer SW at Flash position
: Closed with the engine running and the parking brake lever is released (Parking brake SW off)
I10 Ignition SW
1–3 : Closed with the ignition SW at ACC or ON position
1–2 : Closed with the ignition SW at ON or ST position
5–6 : Closed with the ignition SW at ON or ST position
5–4 : Closed with the ignition SW at ST position
: Parts Location
Code
See Page
Code
See Page
G2
32
J6
35
I10
35
J7
35
Code
See Page
: Relay Blocks
Code
See Page
Relay Blocks (Relay Block Location)
1
22
Engine Room R/B (Engine Compartment Left)
3
28
RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code
IA
IB
IF
IH
IM
1A
1B
1C
1D
See Page
25
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
25
Instrument Panel Wire and Instrument Panel J/B (Lower
(
Finish Panel))
24
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
22
Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
: Connector Joining Wire Harness and Wire Harness
Code
IA4
See Page
40
Joining Wire Harness and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
: Ground Points
Code
See Page
Ground Points Location
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
50
2004 COROLLA (EWD533U)
Memo
51
2004 COROLLA (EWD533U)
Starting and Ignition
IG2 6
B–W
ST2 4
R
B–W
I7
R
(A/T)
R
I10
Ignition SW
(M/T)
B
5 AM2
6 IM
R
II2
(A/T)
15A
AM2
J 2(A), J 3(B)
Junction Connector
R
12
(A/T)
3 IA2
R
(A/T)
R
2
3 IM
A A
A A
R
2 IA4
1 IM
R
(A/T)
5
1
11 IL
A2
Park/Neutral Position SW
B–R
ST
Relay
(A/T)
3
(M/T)
E B
4 IF
9
SRLY
II2
B
11
(A/T)
10 IA5
B
B
(* 1)
B
(* 1)
(A/T)
2
1
2
6
2
B
4
N
(M/T)
T3
TVIP ECU
S8
Starter Cut
Relay
B
21
1
(* 2)
B
B–R
3
1
B
(*1)
(M/T)
(*1)
P
C8
Clutch Start SW
B–R
W–B
B–W
B
II1
I9
(*1)
B
B
(* 2)
B
(* 2)
(* 1)
B
(* 2 M/T)
B
(*2)
1
A
S 2(A), S 3(B)
Starter
M
W–B
Battery
I2
B
1 B
FL MAIN
2. 0L
B–R
G A
(* 1)
B
B
B
G A
J 2(A)
Junction Connector
7
G A
(A/T)
1 1A
B
1
(* 1 M/T)
30A
MAIN
A
J6
Junction
Connector
B
(A/T)
B
IE
52
2004 COROLLA (EWD533U)
(M/T)
* 1 : w/ TVIP System
* 2 : w/o TVIP System
B–W
B–W
5 IL
B–W
(A/T)
R
12 IC
B–W
10 EA1
I2
Ignition Coil and
Igniter No. 1
1
I3
Ignition Coil and
Igniter No. 2
IGT
IGF
GND
IGT
IGF
GND
IGT
IGF
GND
IGF
IGT
GND
3
2
4
3
2
4
3
2
4
2
3
4
L–Y
W–B
Y–G
L–Y
W–B
GR
L–Y
W–B
L–Y
W
W–B
+B
W–B
F A
F A
L–Y
E2
GR
L–Y
W
F A
Y–G
F A
L–Y
J 2(A), J 3(B)
Junction Connector
L–Y
H B
L–Y
E2
W–B
W–B
E2
R–L
R
(A/T)
NSW
I5
Ignition Coil and
Igniter No. 4
1
+B
W–B
8 B
1
+B
I4
Ignition Coil and
Igniter No. 3
R–L
+B
B–W
E3
B–W
B–W
B–W
1
N1
Noise Filter
(Ignition)
B–W
1
B–W
E3
B–W
B–W
E3
8 A
9 A
10 A
23 A
11 A
IGT1
IGT2
IGT3
IGF
IGT4
STA
9 B
E 3(A), E 4(B)
Engine Control Module
W–B
B
(A/T)
B
(M/T)
EC
53
2004 COROLLA (EWD533U)
Starting and Ignition
Service Hints
I10 Ignition SW
5–4 : Closed with the ignition SW at ST position
5–6 : Closed with the ignition SW at ON or ST position
S2 (A), S3 (B) Starter
Points closed with the shift lever at P or N position and the ignition SW at ST position (A/T)
Points closed with the clutch pedal depressed and the ignition SW at ST position (M/T)
: Parts Location
Code
See Page
A2
Code
32
C8
See Page
I4
33
Code
See Page
N1
33
34
I5
33
S2
A
33
E3
A
34
I10
35
S3
B
33
E4
B
34
J2
A
35
S8
35
I2
33
J3
B
35
T3
35
I3
33
J6
35
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
See Page
IC
25
IF
25
IL
IM
1A
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
Instrument Panel Wire and Instrument Panel J/B (Lower
(
Finish Panel))
24
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
: Connector Joining Wire Harness and Wire Harness
Code
EA1
See Page
Joining Wire Harness and Wire Harness (Connector Location)
38
Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
40
Engine
g
Room Main Wire and Instrument Panel Wire ((Left Side of the Instrument Panel Reinforcement))
42
Engine Wire and Instrument Panel Wire (Blower Unit RH)
IA2
IA4
IA5
II1
II2
: Ground Points
Code
See Page
Ground Points Location
EC
38
Left Side of the Cylinder Head
IE
40
Behind the Combination Meter
: Splice Points
Code
E2
E3
I2
See Page
Wire Harness with Splice Points
38
Engine Wire
42
Instrument Panel Wire
Code
I7
I9
See Page
42
54
2004 COROLLA (EWD533U)
Wire Harness with Splice Points
Instrument Panel Wire
Memo
55
2004 COROLLA (EWD533U)
Charging
B–G
W
B–W
From Power Source System
(See Page 48)
5
5 AM2
IL
IG2 6
ST2
10A
GAUGE
B
8 IK
B–O
I10
Ignition SW
2 IG
32
22 3B
20 3B
IA4
14
Y
II2
9 3B
1
1
10 3B
W
2
5A ALT–S
2
100A ALT
2
1
Y
1
B A
30A MAIN
1 1B
R–W
B–R
2
31
R–W
B–R
W
B–G
3 IM
Charge
15A
AM2
C9
Combination Meter
R–W
6 IM
J 4(A), J 5(B)
Junction
Connector
2
II2
5 EA1
C B
1
Y
R–W
W
1 1A
B
B–G
FL MAIN
2. 0L
2 A
1 A
3 A
1 B
IG
L
S
B
Battery
IC REGULATOR
56
2004 COROLLA (EWD533U)
G 1(A), G 2(B)
Generator
Service Hints
G1 (A) Generator
(A) 3–Ground : 13.2–14.0 volts with the engine running at 5000 rpm and 115°C (239°F)
(A) 1–Ground : 0–4 volts with the ignition SW at ON position and the engine not running
: Parts Location
Code
See Page
C9
G1
34
A
32
Code
G2
See Page
B
I10
Code
See Page
32
J4
A
35
35
J5
B
35
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
IG
See Page
IK
IL
Junction Block and Wire Harness (Connector Location)
25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
24
IM
1A
1B
3B
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
EA1
38
Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA4
40
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
II2
42
Engine Wire and Instrument Panel Wire (Blower Unit RH)
57
2004 COROLLA (EWD533U)
Engine Control
B–O
B–W
5 AM2
IG2 6
B–W
ST2 4
R
B–W
B–W
I7
I10
Ignition SW
II2
(A/T)
A A
A A
B–W
R
(M/T)
10 EA1
B–W
B
2
3 EA1
J 2(A), J 3(B)
Junction Connector
E B
(A/T)
R
C8
Clutch Start SW
B–O
B–W
B–W
B–W
R–W
R–W
R–W
B–R
12
(A/T)
IA2
R
15A AM2
3
1
3 IM
R
R
E3
1 IA2
(A/T)
R
6 IM
(M/T)
R–W
(M/T)
B
R–W
9
A2
Park/Neutral
Position SW
N
B
6
3
2
1
1
5
1
3
2
II2
4 IG
19 ID
9
II1
B
(M/T)
G–R
B–R
F10
Fuel Pump
B
FL MAIN
2. 0L
9 EA1
1 IG
G A
B
B
1 1A
W–B
G A
J 2(A)
Junction Connector
15A EFI
11
1
1
8 IK
1
C/OPN Relay
2
30A MAIN
2
5 IL
P
(A/T)
5
1
12 IC
EFI Relay
1
1
IA5
B
1
10
(M/T)
B–R
2 IA4
B
(A/T)
B
4
(M/T)
M
G–R
Battery
W–B
B
B
5
B
I10
ED
BH
58
2004 COROLLA (EWD533U)
B–O
B–O
B–W
B–W
IGT
IGF
3
2
+B
Y–G
1
IGF
IGT
2
3
+B
W–B
B–W
4
GND
4
GND
IGF
IGT
2
3
L–Y
L–Y
1
GND
GR
IGF
2
4
+B
L–Y
IGT
3
E3
I5
Ignition Coil and
Igniter No. 4
1
E2
B–W
B–W
4
GND
R–L
I2
Ignition Coil and
Igniter No. 1
+B
I3
Ignition Coil and
Igniter No. 2
1
R–W
E3
W–B
B–W
E3
B–W
I4
Ignition Coil and
Igniter No. 3
B–W
W–B
B–W
W–B
E2
W–B
W–B
E2
L–Y
R
W
(A/T)
W–B
NSW
H B
J 2(A), J 3(B)
Junction Connector
W
9 A
IGT1
F A
L–Y
8 A
BATT
F A
GR
Y–G
3 D
F A
L–Y
R–L
8 B
R–W
R
(A/T)
F A
10 A
23 A
11 A
IGT2
IGT3
IGF
IGT4
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
B
B B
(A/T)
B B
B
EVP
L–B
12 A
1
DUTY
GND
VISC
3
2
1
V3
VSV (EVAP)
C A
J 4(A), J 5(B)
Junction Connector
W–B
B
(M/T)
B
(A/T)
W–B
C A
RSO
5 A
I1
Idle Air Control Valve
E02
6 A
B–L
E01
7 A
W–B
E03
5 B
W–B
FC
10 D
G–R
STA
9 B
2
B
B
I10
B
W–B
B
W–B
G–R
W–B
(M/T)
B
I10
B
EC
59
2004 COROLLA (EWD533U)
Engine Control
B–O
B–O
B–W
From Power Source System (See Page 48)
II1
10A
M–HTR/
DEF I–UP
B–W
8
8 IL
1
Y
B–Y
2
L
2
W
2
B
2
Y
2
1
1 A
2 A
3 A
4 A
15 A
14 A
#10
#20
# 30
# 40
OCV+
W
B–W
1
I8
Injector No. 3
B–W
1
I7
Injector No. 2
B–W
1
I6
Injector No. 1
B–W
I10
C2
Camshaft Timing Oil
Control Valve (VVT)
B–W
I10
I9
Injector No. 4
B–W
I10
13 D
OCV–
ELS2
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
EC
THA
20 A
1
THW
19 A
4
E2G
THA
E2
5
BR
W–B
+B
1
2
1
E2
Engine Coolant Temp. Sensor
Y–B
2
VG
W
L–W
3
M1
Mass Air Flow Meter
G
II2
B
10
2
B
EVG
32 B
V2
VSV (Canister Closed Valve)
1
VG
24 B
P1
Power Steering Oil
Pressure SW
L
II2
L
17
PSW
29 B
W–B
28 B
L–R
CCV
1 C
BR
BR
B
B
I10
I10
A
J7
Junction
Connector
IG
60
2004 COROLLA (EWD533U)
B
B–O
B–O
From Power Source System (See Page 48)
14 IC
G–W
(USA)
23
13
10
G
II
6
IJ
L–W
G–W
G–W
1 IL
G
I4
(Canada)
5 IC
7
Y
C12
Combination SW
3
G
G–B
Head
11 3C
1
(USA)
3
Tail
(USA)
Light
Control SW
5
G–W
2
13 3C
IDL
13
Y
2
3
S9
Stop Light SW
1
OFF
GSW2
3
TAIL Relay
G–W
(Canada)
3
(w/ Cruise Control)
G–W
(USA)
R–W
7 IH
C14
Cruise Control ECU
15A
STOP
A13
Airbag Sensor Assembly
15A
TAIL
12 D
19 C
ELS
14 D
STP
16 D
F/PS
IDLO
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
PTNK
VC
4 D
LG
L
1 ID2
2 ID2
8 ID2
Y
II2
H A
H A
BR
BR
1
2
B
2
3
Y
6 ID2
BR
D B
1
B A
T1
Throttle Position Sensor
3
B A
J 2(A), J 3(B)
Junction
Connector
L
V4
Vapor Pressure Sensor
BR
2
16
II2
BR
H A
F B
1
Y
F B
J 2(A), J 3(B)
Junction Connector
BR
R
7
TBP
21 A
Y
BR
BR
VTA
18 A
R
21 D
V5
VSV (Vapor Pressure Sensor)
E2
28 A
7 ID2
Y
BR
BR
B
B
B
B
61
2004 COROLLA (EWD533U)
B
I10
B
3 4B
HT
OX
+B
E1
2
B
PRS
32 C
23 B
OX1A
2 4B
THR
1 D
+B
3
4
1 4B
4 4B
62
2004 COROLLA (EWD533U)
W
B
(* 1)
C3
Crankshaft Position Sensor
27 A
NE+
4 C
HT1B
18
2
HT
+B
21 B
II2
1
3
9
34 A
NE–
(* 1)
I11
B
C1
Camshaft Position Sensor
A B
W
(* 1)
W
W
J 2(A), J 3(B)
Junction Connector
E A
W
A/C Thermistor
Pressure SW
A/C SW
Defroster Mode Detection SW
A/C SW
Defroster Mode Detection SW
M/G CLT Relay
FAN NO. 1 Relay
FAN NO. 2 Relay
E A
(* 1)
B–L
13 A
W
Y
31 C
2
W
Y
33 C
BR
1
(* 1)
G–W
2 C
(* 1)
HT1A
P–B
Y–B
6 D
H8
Heated Oxygen Sensor
(Bank 1 Sensor 2)
LG
7 D
1
B
(* 1)
4 B
A/CS
B
B
ACLD
B
B
ACMG
B
CF
(* 1)
P
FAN
BR
B
H5
Heated Oxygen Sensor
(Bank 1 Sensor 1)
LG–B
Engine Control
B–O
B–O
* 1 : Shielded
1
2
(* 1)
(* 1)
26 A
G22+
OX1B
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
II2
4
OX
E1
6
II1
BR
BR
BR
B–O
B–O
From Power Source System (See Page 48)
D1
Data Link Connector 3
7. 5A
OBD
SIL
7
TC
13
WFSE
SG
CG
15
5
4
BAT
16
IJ
R–B
4 4C
1
R–B
3 3B
W–B
3 4C
BR
P–B
2 3B
P
L–R
7
II1
L–R
P–B
P
BR
18 D
20 D
19 D
(* 1)
(* 1)
TC
WFSE
W–B
SIL
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
TACH
5 D
THWO
14 C
W
11 D
R–Y
R–Y
Y–R
SPD
17 C
B
B
BR
EKNK
2 B
V–W
KNK1
1 B
W
E1
7 B
Y–R
B
(*1)
(*1)
(*1)
BR
(*1)
V–W
A B
A B
A B
A B
A A
A A
A A
A A
BR
BR
8
II2
BR
BR
A
BR
BR
21 4B
A A
W–B
1
16 4B
BR
BR
EB
J6
Junction
Connector
J 4(A), J 5(B)
Junction Connector
K1
Knock Sensor
2
IE
63
2004 COROLLA (EWD533U)
BR
14 IA6
17
S1
Skid Control ECU
with Actuator
64
2004 COROLLA (EWD533U)
4
W–G
3
II2
C B
1
C A
C B
SP1
J 2(A), J 3(B)
Junction Connector
B A
J 4(A), J 5(B)
Junction Connector
R–W
(w/o ABS)
14
BR
C9
Combination Meter
(w/o ABS)
R–W
R–W
(w/o ABS)
W–G
16 3B
(w/o ABS)
R–W
W–G
(w/o ABS)
9
4C
9
(w/o ABS)
W–G
B
10
(w/ ABS)
19
V–W
B–O
R–W
B–O
(w/o ABS)
W–G
V–W
Tachometer
Speedometer
32
(w/ ABS)
R–Y
8
B
33
Y–R
Malfunction
Indicator Lamp
Engine Control
From Power Source System (See Page 48)
10A
GAUGE
2 IG
22 3B
20 3B
4
II2
Y–R
8 4C
I2
2
V1
Vehicle Speed Sensor
(Combination Meter)
EB
System Outline
The engine control system utilizes a microcomputer and maintains overall control of the engine, etc. An outline of engine
control is given here.
1. Input Signals
(1) Engine coolant temp. signal system
The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance which
varies according to the engine coolant temp. Thus the engine coolant temp. is input as a control signal to TERMINAL
THW of the engine control module.
(2) Intake air temp. signal system
The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as a
control signal to TERMINAL THA of the engine control module.
(3) Power steering oil pressure signal system
Power steering oil pressure is detected by the power steering oil pressure SW and is input as a control signal to
TERMINAL PSW of the engine control module.
(4) RPM signal system
Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor.
Camshaft position is input as a control signal to TERMINAL G2+ of the engine control module, and engine RPM is input
into TERMINAL NE+.
(5) Throttle signal system
The throttle position sensor detects the throttle valve opening angle, which is input as a control signal to TERMINAL VTA
of the engine control module.
(6) Vehicle speed signal system
The vehicle speed is detected by the ABS speed sensor and the signal is input to TERMINAL SPD of the engine control
module via the comb. meter and the skid control ECU with actuator. (w/ ABS)
The vehicle speed is detected by the vehicle speed sensor installed in the transaxle and the signal is input to
TERMINAL SPD of the engine control module via the comb. meter. (w/o ABS)
(7) NSW signal system (A/T)
The Park/Neutral position SW detects whether the shift position is in neutral or not, and inputs a control signal to
TERMINAL NSW of the engine control module.
(8) A/C SW signal system
The operating voltage of the A/C SW is detected and is input as a control signal to TERMINAL A/CS of the engine
control module.
(9) Battery signal system
Voltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned to on,
voltage for engine control module operation is applied via the EFI relay to TERMINAL +B of the engine control module.
(10) Intake air volume signal system
Intake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the engine
control module.
(11) STA signal system
To confirm that the engine is cranking, the voltage applied to the starter motor during cranking is detected and is input as
a control signal to TERMINAL STA of the engine control module.
(12) Oxygen sensor signal system
The oxygen density in the exhaust gases is detected and is input as a control signal into TERMINALS OX1A and OX1B
of the engine control module. To maintain stable detection performance by the oxygen sensor, a heater is used for
warming the sensor. The heater is also controlled by the engine control module (HT1A and HT1B).
(13) Engine knock signal system
Engine knocking is detected by the knock sensor and input as a control signal to TERMINAL KNK1 of the engine control
module.
(14) Electrical load signal system
When systems which cause a high electrical load such as the rear window defogger, taillight are turned on, a signal is
input to TERMINALS ELS and ELS2 as a control signal.
(15) Vapor pressure signal system
Vapor pressure is detected by the vapor pressure sensor and is input as a control signal to TERMINAL PTNK of the
engine control module.
65
2004 COROLLA (EWD533U)
Engine Control
2. Control System
∗ SFI system
The SFI system monitors the engine conditions through the signals, which are input from each sensor to the engine
control module. Based on this data and the program memorized in the engine control module, the most appropriate fuel
injection timing is decided and current is output to TERMINALS #10, #20, #30 and #40 of the engine control module,
operating the injectors (to inject fuel). This is the system which finely controls the fuel injection in response to the driving
conditions, through the engine control module.
∗ ESA system
The ESA system monitors the engine conditions using the signals, which are input to the engine control module from each
sensor. Based on this data and the program memorized in the engine control module, the most appropriate ignition timing
is decided and current is output to TERMINALS IGT1, IGT2, IGT3 and IGT4 of the engine control module. This output
controls the ignition coil and igniter No. 1 , No. 2 , No. 3 and No. 4 to produce the most appropriate ignition timing for the
driving conditions.
∗ IAC system
The IAC system increases the RPM and provides idle stability for fast idle–up when the engine is cold, and when the idle
speed has dropped due to electrical load and so on. The engine control module evaluates the signals from each sensor,
and outputs current to TERMINAL RSO to control the idle air control valve.
∗ Knock control system
Knock control system controls the gate based on the engine rotation speed and detects knocking by the peak value of the
knock sensor output during the gate open period, and then controls it to the most suitable ignition timing in proportion to
the driving condition.
∗ Evapoparge control system
This system leads the vapor stuck to the canister to the serge tank in order not to agitate the air fuel by adjusting the fuel
injection volume.
The signal at this time will be output from TERMINAL EVP of the engine control module to VSV (EVAP).
3. Diagnosis System
With the diagnosis system, when there is a malfunctioning in the engine control module signal system,the malfunction
system is recorded in the memory. The malfunctioning system can be found by reading the display (Code) of the malfunction
indicator lamp.
4. Fail–Safe System
When a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control based
on the signals from that system, the fail–safe system either controls the system by using the data (Standard values)
recorded in the engine control module memory or else stops the engine.
66
2004 COROLLA (EWD533U)
Service Hints
C/OPN Relay
5–3 : Closed with the starter running and the engine running
EFI Relay
5–3 : Closed with the ignition SW at ON or ST position
E2 Engine Coolant Temp. Sensor
1–2 : Approx. 15.04 kΩ (–20°C, –4°F)
Approx. 5.74 kΩ ( 0°C, 32°F)
Approx. 2.45 kΩ (20°C, 68°F)
Approx. 0.318 kΩ (80°C, 176°F)
E3 (A), E4 (B), E5 (C), E6 (D) Engine Control Module
Voltage at engine control module wiring connectors
+B–E1 : 9–14 volts (Ignition SW at ON position)
VC–E1 : 4.5–5.5 volts (Ignition SW at ON position)
VTA–E1 : 0.3–0.8 volts (Ignition SW on and throttle valve fully closed)
: 3.2–4.9 volts (Ignition SW on and throttle valve fully open)
EVG–E1 : 3.3–3.9 volts (Ignition SW at ON position)
THA–E1 : 0.5–3.4 volts (Engine idling and intake air temp. 0–80°C, 32–176°F)
THW–E1 : 0.2–1.0 volts (Engine idling and engine coolant temp. 60–120°C, 140–248°F)
STA–E1 : 6–14 volts (Engine cranking)
IGT1, IGT2, IGT3, IGT4–E1 : Pulse generation (Engine idling)
IGF–E1 : Pulse generation (Engine idling)
FC–E1 : 9–14 volts (Ignition SW on and engine stopping)
0–3 volts (Engine idling)
W–E1 : 9–14 volts (Engine idling and warning light off)
A/CS–E1 : 9–14 volts (Ignition SW on and A/C SW off)
SPD–E1 : Pulse generation (Driving approx. 20 km/h)
ELS–E1 : 7.5–14 volts (Ignition SW on and taillight on)
ELS2–E1 : 7.5–14 volts (Ignition SW on and rear window defogger on)
NSW–E1 : 0–3 volts (Engine cranking)
#10, #20, #30, #40–E1 : Pulse generation (Engine idling)
NE+ –NE– : Pulse generation (Engine idling)
RSO–E1 : Pulse generation (Engine idling)
G2+ –NE– : Pulse generation (Engine idling)
TBP–E1 : 9.0–14.0 volts (Ignition SW on)
PTNK–E1 : 3.0–3.6 volts (Ignition SW at ON position and remove fuel cap)
OX1A, OX1B–E1 : Pulse generation (Maintain engine speed at 2500 rpm for two minutes after warming up.)
HT1A, HT1B–E1 : 9.0–14.0 volts (Ignition SW at ON position)
0–3.0 volts (Engine idling)
KNK1–E1 : Pulse generation (Engine idling)
EVP–E1 : 9.0–14.0 volts (Ignition SW at ON position)
TACH–E1 : Pulse generation (Engine idling)
67
2004 COROLLA (EWD533U)
Engine Control
: Parts Location
Code
See Page
Code
See Page
Code
See Page
A2
32
F10
36
J4
A
35
A13
34
H5
32
J5
C1
32
H8
35
J6
B
35
35
C2
32
I1
33
J7
35
C3
32
I2
33
K1
33
C8
34
I3
33
M1
33
C9
34
I4
33
P1
33
C12
34
I5
33
S1
33
C14
34
I6
33
S9
35
D1
34
I7
33
T1
33
E2
32
I8
33
V1
33
E3
A
34
I9
33
V2
33
E4
B
34
I10
35
V3
33
E5
C
34
J2
A
35
V4
37
E6
D
34
J3
B
35
V5
37
: Relay Blocks
Code
See Page
Relay Blocks (Relay Block Location)
1
22
Engine Room R/B (Engine Compartment Left)
3
28
RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code
See Page
Junction Block and Wire Harness (Connector Location)
IC
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID
25
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IG
IH
II
25
IJ
Instrument Panel Wire and Instrument Panel J/B (Lower
(
Finish Panel))
IK
IL
24
IM
1A
3B
3C
4B
4C
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code
EA1
See Page
Joining Wire Harness and Wire Harness (Connector Location)
38
Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
40
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
42
Instrument Panel Wire and Floor Wire (Left Kick Panel)
42
Engine Wire and Instrument Panel Wire (Blower Unit RH)
IA2
IA4
IA5
IA6
ID2
II1
II2
68
2004 COROLLA (EWD533U)
: Ground Points
Code
EB
See Page
Ground Points Location
38
Left Side of the Cylinder Head
ED
38
Front Left Suspension Tower
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
BH
44
Under the Left Quarter Pillar
EC
: Splice Points
Code
E2
E3
I2
I4
See Page
38
42
Wire Harness with Splice Points
Engine Wire
Instrument Panel Wire
Code
I7
I10
I11
See Page
Wire Harness with Splice Points
42
Instrument Panel Wire
42
Engine Wire
69
2004 COROLLA (EWD533U)
Headlight
From Power Source System (See Page 48)
L–W
R–W
15A DOME
10A ECU–B
10A GAUGE
1
A18
Automatic Light
Control Sensor
2
1
CLTE
4
3
(*1)
HI
(*1)
W–B
R
E
2
16
R–Y
Y
7
6 3C
(*1)
CSE
H
D2
Daytime Running Light Relay
8 3B
G–W
18
CSO
T
15
8
G–W
19
CSB
IE1
G–R
20
IG
2
(*1)
G–Y
12
3 IE1
G–O
R–W
IE1
R–B
1
3
CHG
(*1)
16 3B
12 3B
+B
G–B
G–Y
22 3B
(*1)
R–B
CLTS
1
R–W
L–W
CLTB
(*1)
2 IG
R–W
1 IH
5 3C
10 3B
4 3C
R–Y
2
R
Y
R
8
9
3
II2
12
IA4
Dimmer SW
Tail
High
Flash
W–B
Head
Low
10
W–B
C12
Combination SW
11
W–B
L
OFF
(* 1)
G1
Generator
1
Light
Control SW
Y
13
11
4B
21
4B
A
W–B
A
(* 1)
IE
70
2004 COROLLA (EWD533U)
W–B
A
W–B
J6
Junction
Connector
ED
L–W
L–W
R–W
R–W
R–B
From Power Source System (See Page 48)
*
*
*
*
1 : USA
2 : w/ ABS
3 : w/o ABS
4 : w/ Fog Light
1
40A
HEAD
MAIN
1
1
R
R–B
Combination SW
2
R
P3
Parking
Brake SW
G–O
11
4
PKB
(*4)
R–B
1
1
1
3
D2
Daytime Running Light Relay
HEAD
Relay
FOG
2
5
DRL
H–LP
1
6
R–Y
(* 2)
R–W
(* 3)
R–W
W–R
(* 1)
G–B
4
IA2
1
1
R–B
S1
Skid Control ECU
with Actuator
10A
HEAD RH
LWR
2
2
R–B
1
1
R–B
2
R–B
1 IA4
1
H2
Headlight LH (Low)
R–W
1
R–B
J1
Junction
Connector
PKB
2
W–B
2
B2
Brake Fluid Level
Warning SW
R–W
1
(*2)
(*3)
12
B
B
10A
HEAD LH
LWR
15 IA5
R–W
IA5
R–W
15
1
H4
Headlight RH (Low)
BRK
10
R
DIM
13
R–B
R–Y
TAIL
14
1
R–B
R–Y
1
I3
W–B
W–R
G–B(* 1)
W–B
W–B
71
2004 COROLLA (EWD533U)
Headlight
From Power Source System (See Page 48)
L–W
* 1 : USA
R–W
R–B
R–B
L–W
15A
TAIL
7 IH
G–W
7 IC
(* 1)
1
1
3
L–W
2
3
1
5
2
10A
HEAD RH
UPR
2
1
G
13
C9
Combination Meter
E4
G–B(*1)
W–B
W–B
W–B
W–B
EA
72
2004 COROLLA (EWD533U)
IA2
W–R
R–W
18
(*1)
L–W
4
High Beam
R
5
W–B
W–B
W–B
1
H3
Headlight RH (High)
H1
Headlight LH (High)
2
10
14
R
R–W
IA6
W–R
ED
2
3
3
(* 1)
G–B
G
(* 1)
R
19 4C
6
1
5
1
R
R
R–W
20 4C
2
1
1
W–R
1
3
TAIL Relay
4 IL
10A
HEAD LH
UPR
W–B
3
1
DIMMER Relay
1
(* 1)
R–B
1
G–W
R
System Outline
The current is always flowing from the HEAD MAIN fuse to HEAD relay (Coil side) to TERMINAL 6 of the daytime running
light relay, from ECU–B fuse to TERMINAL 3 of the daytime running light relay and from the TAIL fuse to TAIL relay (Coil
side) to TERMINAL 14 of the daytime running light relay (USA).
When the ignition SW is turned on, the current flowing through the GAUGE fuse flows to TERMINAL 12 of the daytime
running light relay.
1. Daytime Running Light Operation
When the engine is started, voltage generated at TERMINAL L of the generator is applied to TERMINAL 8 of the daytime
running light relay. If the parking brake lever is pulled up (Parking brake SW on) at this time, the relay is not activated so the
daytime running light system does not operate. If the parking brake lever is then released (Parking brake SW off), a signal is
input to TERMINAL 11 of the relay.
This activates the daytime running light relay and the HEAD relay is turned to on, so the current flows from the HEAD MAIN
fuse to the HEAD relay (Point side) to HEAD LH LWR, HEAD RH LWR fuses to TERMINAL 2 of the headlights to TERMINAL
1 to TERMINAL 1 of the daytime running light relay to TERMINAL 2 to GROUND, causing the headlights to light up
(Headlights light up dimmer than normal brightness.). Once the daytime running light system operates and the headlights
light up, the headlights remain on even if the parking brake lever is pulled up (Parking brake SW on).
If the engine stalls and the ignition SW remains on, the headlights remain light up even through current is no longer output
from TERMINAL L of the generator. If the ignition SW is then turned off, the headlights go off.
If the engine is started with the parking brake lever released (Parking brake SW off), the daytime running light system
operates and headlights light up when the engine starts.
2. Headlight Operation
When the light control SW is switched to Head position and the dimmer SW is set to Low position, causing the daytime
running light relay and the HEAD relay to turn on, so the current flows from the HEAD MAIN fuse to HEAD relay (Coil side) to
TERMINAL 6 of the daytime running light relay to TERMINAL 7 to TERMINAL 12 of the light control SW to TERMINAL 11 to
GROUND. The current to HEAD relay (Point side) then flows to HEAD LH LWR, HEAD RH LWR fuses to TERMINAL 2 of the
headlights (Low) to TERMINAL 1 to TERMINAL 1 of the daytime running light relay to TERMINAL 2 to GROUND, causing
the headlights to light up at normal intensity.
When the light control SW is switched to Head position and the dimmer SW is set to High position, the signal from the
dimmer SW is input to the daytime running light relay. This activates the daytime running light relay and the HEAD relay is
turned on, so the current flows from the HEAD MAIN fuse to HEAD relay (Point side) to TERMINAL 1 of the DIMMER relay to
TERMINAL 2 to TERMINAL 13 of the daytime running light relay, activating the DIMMER relay. This causes current to flow
from TERMINAL 3 of the DIMMER relay to TERMINAL 5 to HEAD LH UPR, HEAD RH–UPR fuses to TERMINAL 2 of the
headlights (High) to TERMINAL 1 to GROUND, causing the headlights to light up at high beam and the high beam indicator
light to light up.
When the dimmer SW is switched to Flash position, the signal from the dimmer SW is input to the daytime running light relay.
This activates the daytime running light relay and the HEAD relay is turned on, so the current flows from the HEAD MAIN
fuse to HEAD relay (Point side) to TERMINAL 1 of the DIMMER relay to TERMINAL 2 to TERMINAL 13 of the daytime
running light relay, activating the DIMMER relay, and also flows from the HEAD LH UPR, HEAD RH UPR fuses to
TERMINAL 2 of the headlights to TERMINAL 1 to GROUND, causing the headlights to light up at high beam and the high
beam indicator light to light up.
3. Automatic Light Control Operation (USA)
When the daytime running light is operating and the Automatic control sensor detects a decrease in the ambient light, the
automatic light control operation starts. At the same time, daytime running light relay is activated, so current flows from the
TAIL fuse to the TAIL relay (Coil side) to TERMINAL 14 of the daytime running light relay, and the HEAD MAIN fuse to the
HEAD relay (Coil side) to TERMINAL 6 of the daytime running light relay, activating both the TAIL relay and the HEAD relay,
so that the taillights and headlights light up.
When the automatic light control sensor detects an increase in the ambient light, the ignition SW is turned to off, the light
control SW is turned to Head position, and the automatic light control operation stops.
73
2004 COROLLA (EWD533U)
Headlight
Service Hints
HEAD Relay
1–2 : Closed with the light control SW at Head position or the dimmer SW at Flash position
Closed with the engine running and the parking brake lever is released (Parking brake SW off)
D2 Daytime Running Light Relay
12–Ground : Approx. 12 volts with the ignition SW at ON position
7–Ground : Approx. 12 volts with the light control SW at Head position or the dimmer SW at Flash position
3, 6, 14–Ground : Always approx. 12 volts
11–Ground : Continuity with the parking brake lever pulled up
8–Ground : 13.2–14.0 volts with the engine running at 5000 rpm and 115°C (239°F)
2–Ground : Always continuity
16–Ground : Continuity with the dimmer SW at High or Flash position
10–Ground : Continuity with the brake fluid level not enough or the parking brake lever pulled up
: Parts Location
Code
See Page
Code
See Page
A18
34
G1
32
Code
See Page
J1
33
B2
32
H1
32
J6
35
C9
34
H2
32
P3
35
C12
34
H3
32
S1
33
D2
34
H4
32
: Relay Blocks
Code
See Page
Relay Blocks (Relay Block Location)
1
22
Engine Room R/B (Engine Compartment Left)
3
28
RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code
IC
IG
IH
IL
3B
3C
4B
4C
See Page
25
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
25
Instrument Panel Wire and Instrument Panel J/B (Lower
(
Finish Panel))
24
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
IA2
IA4
40
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IE1
42
Instrument Panel Wire and Instrument Panel No.4 Wire (Behind the Combination Meter)
II2
42
Engine Wire and Instrument Panel Wire (Blower Unit RH)
IA5
IA6
: Ground Points
Code
See Page
Ground Points Location
EA
38
Front Right Fender
ED
38
Front Left Suspension Tower
IE
40
Behind the Combination Meter
74
2004 COROLLA (EWD533U)
: Splice Points
Code
E4
See Page
38
Wire Harness with Splice Points
Engine Room Main Wire
Code
I3
See Page
42
Wire Harness with Splice Points
Engine Room Main Wire
75
2004 COROLLA (EWD533U)
Fog Light
From Power Source System (See Page 48)
1
10A
ECU–B
10A
GAUGE
15A
FOG
2
2 IG
1
G
R–W
1 IH
G
R–B
22 3B
1
1
1
5
R–W
12 3B
3
FOG
Relay
D2
Daytime Running Light Relay
12
+B
2
3
IG
1
1
9
HI
FOG
4
Fog
Light
SW
2
R–Y
R
G–O
16
OFF
On
6 3C
R
High
Flash
11
R
R
Low
1
2
1
2
A
J6
Junction
Connector
IE
76
2004 COROLLA (EWD533U)
W–B
W–B
W–B
C12
Combination SW
9
F2
Front Fog Light RH
Head
Dimmer SW
Light
Control SW
Tail
8
F1
Front Fog Light LH
R
4 3C
12
OFF
4
G–O
C12
Combination SW
5 3C
IA5
R–Y
H
7
R
R–Y
R
W–B
ED
EA
Service Hints
FOG Relay
3–5 : Closed with light control SW at Head position, dimmer SW at Low position and fog light SW at On position
: Parts Location
Code
See Page
Code
See Page
C12
34
F1
32
D2
34
F2
32
Code
J6
See Page
35
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
IG
IH
3B
3C
See Page
Junction Block and Wire Harness (Connector Location)
25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code
IA5
See Page
40
Joining Wire Harness and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
: Ground Points
Code
See Page
Ground Points Location
EA
38
Front Right Fender
ED
38
Front Left Suspension Tower
IE
40
Behind the Combination Meter
77
2004 COROLLA (EWD533U)
Turn Signal and Hazard Warning Light
From Power Source System (See Page 48)
1
10A
GAUGE
10A
HAZARD
2
G–W
1
R–W
2 IG
22 3B
8 IA5
R–W
G–W
15 3B
1
4
IG
T2
Turn Signal Flasher Relay
+B
LL
G–Y
12 IH
5 IG
G–Y
6 IG
24
25
G–Y
5 IH
LH
RH
4
C9
Combination Meter
4
R11
Rear Combination Light RH
2
3
Turn
R9
Rear Combination Light LH
2
3
Turn
3
12 ID
G–B
17 ID
G–Y
1 IC
F4
Front Turn Signal Light RH
3
F3
Front Turn Signal Light LH
G–B
8 IC
11 IH
G–B
13 IH
G–B
1 IK
2
G–B
G–Y
9 IL
LR
3
W–B
W–B
W–B
W–B
2
W–B
W–B
ED
EA
BI
78
2004 COROLLA (EWD533U)
* 1 : w/ Wireless Door Lock
* 2 : w/o Wireless Door Lock
T2
Turn Signal Flasher Relay
HAZ
8
(* 1)
6
Y–B
ER
5
G–O
EL
7
G–R
GND
5
W–B
6
(* 1)
2 3C
RH
C12
Combination SW
(* 2)
7
LH
Y–B
Turn SW
W–B
Y–B
3 3C
3
H7
Hazard SW
15 4B
18 4B
21 4B
2
W–B
17 4B
W–B
21 3A
11 3A
W–B
W–B
A
IE
J6
Junction
Connector
A
J7
Junction
Connector
IG
79
2004 COROLLA (EWD533U)
Turn Signal and Hazard Warning Light
Service Hints
T2 Turn Signal Flasher Relay
1–Ground : Approx. 12 volts with the ignition SW at ON position
7–Ground : Always continuity
4–Ground : Always approx. 12 volts
: Parts Location
Code
See Page
Code
See Page
Code
See Page
C9
34
H7
35
R11
37
C12
34
J6
35
T2
35
F3
32
J7
35
F4
32
R9
37
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
See Page
Junction Block and Wire Harness (Connector Location)
IC
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID
25
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IG
IH
IK
IL
25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
24
3A
3B
28
Instrument Panel Wire and RH J/B ((Right
g Side of the Instrument Panel Reinforcement))
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
3C
4B
: Connector Joining Wire Harness and Wire Harness
Code
IA5
See Page
40
Joining Wire Harness and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
: Ground Points
Code
See Page
Ground Points Location
EA
38
Front Right Fender
ED
38
Front Left Suspension Tower
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
BI
44
Lower Back Panel
80
2004 COROLLA (EWD533U)
Memo
81
2004 COROLLA (EWD533U)
Taillight
G–W
G–W
(USA)
(USA)
3
3
TAIL
Relay
15A
TAIL
2
2 IL
2 IC
G
3
G
1
7 IH
2 ID
5
3
3
G
G–B
(USA)
J1
Junction
Connector
(Canada)
W
G–W
1 IB
A
A
A
14
TAIL
D2
Daytime Running
Light Relay
G
T
2
G
1 1C
1 1A
2
1
2
13
Tail
G
Head
C12
Combination SW
10
G
W–B
W–B
FL MAIN
2. 0L
I4
(USA)
(Canada)
11 4B
W–B
B
Light
Control
SW
OFF
W–B
(USA)
21 4B
Battery
A
J6
Junction
Connector
IE
W–B
ED
82
2004 COROLLA (EWD533U)
EA
F4
Front Parking Light RH
1
1
F3
Front Parking Light LH
G
(USA)
G–W
100A
ALT
(USA)
15
1
R11
Rear Combination Light RH
Tail
2
1
L1
License Plate Light LH
BI
2004 COROLLA (EWD533U)
2
1
A A
A
A
L2
License Plate Light RH
G
G
G
G
G
G
B B
W–B
4
J 8(A), J 9(B)
Junction Connector
W–B
W–B
1
R9
Rear Combination Light LH
Tail
C A
W–B
W–B
C A
B B
C A
G
4
J 8(A)
Junction
Connector
A A
W–B
BH
83
Taillight
Service Hints
C12 Combination SW
10–13 : Continuity with the light control SW at Tail or Head position
TAIL Relay
5–3 : Closed with the light control SW at Tail or Head position
: Parts Location
Code
See Page
Code
See Page
C12
34
J1
D2
34
F3
32
J8
A
F4
32
J9
B
Code
33
J6
See Page
L1
36
35
L2
36
36
R9
37
36
R11
37
: Relay Blocks
Code
3
See Page
28
Relay Blocks (Relay Block Location)
RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code
IB
See Page
Junction Block and Wire Harness (Connector Location)
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID
25
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IH
25
IL
24
IC
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1A
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
1C
22
Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4B
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Ground Points
Code
See Page
Ground Points Location
EA
38
Front Right Fender
ED
38
Front Left Suspension Tower
IE
40
Behind the Combination Meter
BH
44
Under the Left Quarter Pillar
BI
44
Lower Back Panel
: Splice Points
Code
I4
See Page
42
Wire Harness with Splice Points
Code
Instrument Panel Wire
84
2004 COROLLA (EWD533U)
See Page
Wire Harness with Splice Points
Memo
85
2004 COROLLA (EWD533U)
Illumination
L–W
C12
Combination SW
Light
Control
SW
OFF
* 1 : USA
* 2 : Canada
Tail
Head
13
10
G–W
G
(* 1)
G–W
(*1)
G–W
L–W
7 IH
(* 2)
(* 2)
15A
TAIL
4 IL
I4
3
I4
G
I4
G
I4
G
3
1
3
2
5
G
R5
Rear Window Defogger SW
G
G
G
W
L–W
TAIL
Relay
(* 1)
1 IB
7 IC
10 A
A8
A/C SW
R 3(A), R 4(B)
Radio and Player
3
(* 1)
G–B
3
1
10
5
1
3
5 B
1 1C
TAIL
15A
DOME
100A
ALT
D2
Daytime Running
Light Relay
W–B
14
W–B
2
W–B
2
1
G
1
I5
B
1 1A
FL MAIN
2. 0L
Battery
86
2004 COROLLA (EWD533U)
W–B
I5
W–B
L–W
L–W
20 4C
E6
Engine Control
Module
ELS
18 4C
G
12
G
I4
G
I4
G
I4
G
I4
G
L–W
I4
C9
Combination Meter
2
W–B
I5
I5
W–B
3
W–R
W–B
W–B
GND
W–B
19 4B
21 4B
W–B
I5
ILL–
1
J6
Junction
Connector
W–B
W–B
W–B
W–B
I5
LED
5
W–B
1
+B
W–R
3
28
W–B
6
TAIL
R7
Rheostat
1
G
G
2
18
Illumination
3
A10
A/T Shift Lever Illumination
G
G
4
8
C6
Cigarette Lighter Illumination
5
B5
Blower SW
H7
Hazard SW
G
G
G
A
IE
87
2004 COROLLA (EWD533U)
Illumination
Service Hints
C12 Combination SW
10–13 : Continuity with the light control SW at Tail or Head position
TAIL Relay
5–3 : Closed with the light control SW at Tail or Head position
: Parts Location
Code
See Page
Code
See Page
Code
See Page
A8
34
C12
34
R3
A
35
A10
34
D2
34
R4
B5
34
E6
34
R5
B
35
35
C6
34
H7
35
R7
35
C9
34
J6
35
: Relay Blocks
Code
See Page
Relay Blocks (Relay Block Location)
1
22
Engine Room R/B (Engine Compartment Left)
3
28
RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code
IB
IC
See Page
25
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IH
25
IL
24
1A
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
1C
22
Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4B
4C
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Ground Points
Code
IE
See Page
40
Ground Points Location
Behind the Combination Meter
: Splice Points
Code
I4
See Page
42
Wire Harness with Splice Points
Instrument Panel Wire
Code
I5
See Page
42
88
2004 COROLLA (EWD533U)
Wire Harness with Splice Points
Instrument Panel Wire
Memo
89
2004 COROLLA (EWD533U)
Interior Light
From Power Source System (See Page 48)
1
15A
DOME
10A
GAUGE
25A
DOOR
2
L–W
1
7 IC
10
IG
+B
DCTY
4 IE
4 ID
L–W
L–W
Door
I13
Interior Light
L–W
L–W
19 4C
(*1 * 5)
1
2
R–W
C9
Combination Meter
1
D4
Door Courtesy SW
Front LH
2
20 4C
5
B
B1
L3
Luggage Compartment
Light
20
6 IE
L–W
17
4 IL
1
J10
Junction
Connector
4 IK
L–W
IL
R
3
6
R–W
1 ID
R–W
1 IE
W–B(*1)
W–B
PRCTY
5
B(* 2 * 5)
10 IH
W–B
9
R–Y
GND
4 IF
I11(A)
Integration Relay
1
A
L4
Luggage Compartment
Light SW
R–W
A
A
IE
J7
Junction Connector
W–B
J6
Junction Connector
W–B
1
A
W–B(*1)
B(*2 * 5)
IG
90
2004 COROLLA (EWD533U)
*
*
*
*
*
*
1 : w/ Moon Roof
2 : w/o Moon Roof
3 : w/o Door Lock Control
4 : w/ Door Lock Control
5 : w/ Automatic Glare–Resistant EC Mirror
6 : w/o Automatic Glare–Resistant EC Mirror
I11(A)
Integration Relay
15 ID
3 IK
B
(*4)
R–W
(*4)
R–W
14 ID
LP2
12 A
3 IG
7
R7
Rheostat
10 4B
(* 4)
W–B
R–W
(* 3)
(* 3)
R–W
(*4)
1
3
IK1
B
19 4B
W–B
21 4B
(*2 * 6)
1
D5
Door Courtesy SW Front RH
R–W
1
D7
Door Courtesy SW Rear RH
B(* 2 * 6)
B(* 2 * 5)
B(* 1 * 5)
(* 1)
D6
Door Courtesy SW Rear LH
I12
Personal Light
(* 5)
(* 6)
(* 5)
(* 6)
M2
Personal Light
6
7 4B
R–W
9 4B
1
3
3
(* 5)
4
(* 6)
(* 5)
(* 6)
1
W–B
Off
On
Door
(*3)
R–W
R–B
R–Y
B
(* 1 * 5)
(* 2, *1 * 5)
B
B
(* 1 * 6)
R–B
3 IE
PCTY
13 A
(* 2 *6)
LP
3 A
W–B(*1)
A
B1
J6
Junction
Connector
B(* 2 * 5)
IE
91
2004 COROLLA (EWD533U)
Interior Light
Service Hints
D4, D5, D6, D7 Door Courtesy SW Front LH, RH, Rear LH, RH
1–Ground : Closed with the door open
L4 Luggage Compartment Light SW
1–Ground : Closed with the luggage compartment door open
: Parts Location
Code
See Page
C9
34
D4
36
D5
36
D6
D7
Code
I11
See Page
A
Code
See Page
35
J10
36
I12
36
L3
36
I13
36
L4
36
36
J6
35
M2
37
36
J7
35
R7
35
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
See Page
Junction Block and Wire Harness (Connector Location)
IC
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID
25
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IE
25
Roof Wire and Instrument Panel J/B (Lower Finish Panel)
IF
IG
25
IH
IK
IL
4B
4C
Instrument Panel Wire and Instrument Panel J/B (Lower
(
Finish Panel))
24
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code
IK1
See Page
42
Joining Wire Harness and Wire Harness (Connector Location)
Roof Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
: Ground Points
Code
See Page
Ground Points Location
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
: Splice Points
Code
B1
See Page
44
Wire Harness with Splice Points
Code
Roof Wire
92
2004 COROLLA (EWD533U)
See Page
Wire Harness with Splice Points
Memo
93
2004 COROLLA (EWD533U)
Stop Light
From Power Source System (See Page 48)
15A
STOP
R–W
14 IC
2
S9
Stop
Light SW
G–W
1
5 IC
G–W
G–W
7 ID
C B
C B
J 8(A), J 9(B)
Junction Connector
4
1
2
G–W
(LED Type)
H9
High Mounted Stop Light
G–W
(Bulb Type)
B A
R11
Rear Combination Light RH
G–W
2
Stop
Stop
2
R9
Rear Combination Light LH
G–W
B A
1
H9
High Mounted
Stop Light
4
W–B
(LED Type)
W–B
W–B
W–B
(Bulb Type)
2
A A
J 8(A)
Junction Connector
W–B
A A
A A
W–B
BI
BH
94
2004 COROLLA (EWD533U)
Service Hints
S9 Stop Light SW
2–1 : Closed with the brake pedal depressed
: Parts Location
Code
See Page
H9
J8
36
A
Code
J9
36
See Page
B
R9
Code
See Page
36
R11
37
37
S9
35
: Junction Block and Wire Harness Connector
Code
See Page
Junction Block and Wire Harness (Connector Location)
IC
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID
25
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Ground Points
Code
See Page
Ground Points Location
BH
44
Under the Left Quarter Pillar
BI
44
Lower Back Panel
95
2004 COROLLA (EWD533U)
Back–Up Light
From Power Source System (See Page 48)
10A
GAUGE
R–W
2 IG
22 3B
R–W
20 3B
II2
J10
Junction Connector
R–W
B
C
C
R–B
C
R–B
J4
Junction
Connector
B
R–B
14
B1
Back–Up Light SW
A2
Back–Up Light SW
1
2
2
W–B
W–B
R–B
R–B
(M/T)
1
2
6 ID
(A/T)
13
II2
A B
A B
J 8(A), J 9(B)
Junction
Connector
R–B
R–B
9 IK
W–B
A A
W–B
BH
96
2004 COROLLA (EWD533U)
BI
R10
Rear Combination
Light LH
Back–Up
2
Back–Up
1
3
R12
Rear Combination
Light RH
R–W
(A/T)
(M/T)
R–W
Service Hints
A2 Back–Up Light SW (A/T)
2–3 : Closed with the shift lever at R position
B1 Back–Up Light SW (M/T)
2–1 : Closed with the shift lever at R position
: Parts Location
Code
See Page
Code
A2
32
J8
B1
32
J9
J4
35
J10
See Page
Code
See Page
A
36
R10
37
B
36
R12
37
36
: Junction Block and Wire Harness Connector
Code
See Page
ID
25
IG
25
IK
24
3A
3B
Junction Block and Wire Harness (Connector Location)
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code
II2
See Page
42
Joining Wire Harness and Wire Harness (Connector Location)
Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code
See Page
Ground Points Location
BH
44
Under the Left Quarter Pillar
BI
44
Lower Back Panel
97
2004 COROLLA (EWD533U)
Wiper and Washer
From Power Source System (See Page 48)
*
*
*
*
C11
Combination SW
MIST
15A
WASHER
OFF
INT
11 IC
7 IL
Wiper SW
25A
WIPER
1 : w/ Intermittent Volume SW
2 : w/o Intermittent Volume SW
3 : w/ Washer Continuous
4 : w/ Intermittent
LO
9 IC
L
On
+S
EW
6
5
W
4
L–Y
F5
Front Washer
Motor
L–W
L
L–R
2
M
+1
7
W–B
+2
9
L–W
+B
8
(* 2)
(* 1)
(* 3)
Wiper Relay (* 4)
L
L
Off
1
IA2
6 IA2
9 IA2
L–W
L
L–Y
L–W
L–W
7
L–W
L–R
L–Y
L–R
8 IA2
4
1
2
3
+2
+1
B
S
W–B
M
W–B
5 E
A
J6
Junction
Connector
F6
Front Wiper Motor
EA
IE
98
2004 COROLLA (EWD533U)
Washer
SW
HI
System Outline
With the ignition SW turned on, the current flows to TERMINAL 8 of the wiper and washer SW, TERMINAL 2 of the front
wiper motor through the WIPER fuse, and the current flows to TERMINAL 2 of the washer motor through the WASHER fuse.
1. Low Speed Position
With wiper SW turned to LO position, the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL 7
to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and causes to the front wiper motor to run at low
speed.
2. High Speed Position
With wiper SW turned to HI position, the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL 9
to TERMINAL 4 of the front wiper motor to TERMINAL 5 to GROUND and causes to the wiper motor to run at high speed.
3. INT Position
With wiper SW turned to INT position, the relay operates and the current which is connected by relay function flows from
TERMINAL 8 of the front wiper and washer SW to TERMINAL 5 to GROUND. This flow of current operates the intermittent
circuit and the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL 7 to TERMINAL 1 of the front
wiper motor to TERMINAL 5 to GROUND and the functions.
The intermittent operation is controlled by the charge/discharge function of the condenser installed in the relay, and the
intermittent time is controlled by a time control SW (w/ intermittent volume SW) to change the charging time of the
condenser.
4. MIST Position
With wiper SW turned to MIST position, the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL
7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and causes to the front wiper motor to run at low
speed.
5. Washer Continuous Operation
With the washer SW turned to on, the current flows from TERMINAL 2 of the washer motor to TERMINAL 1 to TERMINAL 4
of the front wiper and washer SW to TERMINAL 5 to GROUND and causes to the washer motor to run, and the window
washer jet operates. This causes the current to flow to washer continuous operation circuit in TERMINAL 8 of the front wiper
and washer SW to TERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and the washer
operates continuously.
Service Hints
C11 Combination SW
5–Ground : Always continuity
8–Ground : Approx. 12 volts with ignition SW at On position
7–Ground : Approx. 12 volts with wiper and washer SW at LO position
: Approx. 12 volts with wiper and washer SW at MIST position
: Approx. 12 volts every approx. 1 to 10 seconds intermittently with wiper and washer SW at INT position
6–Ground : Approx. 12 volts with ignition SW on unless wiper motor at STOP position
9–Ground : Approx. 12 volts with ignition SW on and wiper and washer SW at HI position
F6 Front Wiper Motor
2–3 : Closed unless wiper motor at STOP position
: Parts Location
Code
See Page
Code
See Page
C11
34
F6
32
F5
32
J6
35
Code
See Page
: Junction Block and Wire Harness Connector
Code
See Page
Junction Block and Wire Harness (Connector Location)
IC
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IL
24
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code
IA2
See Page
40
Joining Wire Harness and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
99
2004 COROLLA (EWD533U)
Wiper and Washer
: Ground Points
Code
See Page
Ground Points Location
EA
38
Front Right Fender
IE
40
Behind the Combination Meter
100
2004 COROLLA (EWD533U)
Memo
101
2004 COROLLA (EWD533U)
Horn
From Power Source System (See Page 48)
* 1 : w/ Wireless Door Lock
* 2 : w/o Wireless Door Lock
1
10A
HORN
2
B–W
1
B–W
1
1
1
5
HORN
Relay
2
3
1
B
G–Y
1
18 IA5
(*1)
G–Y
H6
Horn
(*2)
G–Y
13 4A
(* 1)
G–Y
12 4A
Horn
1
C10
Combination SW
102
2004 COROLLA (EWD533U)
Service Hints
HORN Relay
5–3 : Closed with the horn SW on.
: Parts Location
Code
See Page
C10
34
Code
H6
See Page
Code
See Page
32
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
4A
See Page
30
Junction Block and Wire Harness (Connector Location)
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code
IA5
See Page
40
Joining Wire Harness and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
103
2004 COROLLA (EWD533U)
Cigarette Lighter
From Power Source System (See Page 48)
15A
CIG
GR
8 IF
10 3A
GR
9 3A
2
C5
Cigarette
Lighter
W–B
1
A
J6
Junction
Connector
IE
104
2004 COROLLA (EWD533U)
Service Hints
C5 Cigarette Lighter
2–Ground : Approx. 12 volts with the ignition SW at ACC or ON position
1–Ground : Always continuity
: Parts Location
Code
See Page
C5
Code
34
J6
See Page
Code
See Page
35
: Junction Block and Wire Harness Connector
Code
See Page
Junction Block and Wire Harness (Connector Location)
IF
25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3A
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Ground Points
Code
IE
See Page
40
Ground Points Location
Behind the Combination Meter
105
2004 COROLLA (EWD533U)
Clock
From Power Source System (See Page 48)
1
15A
DOME
15A
TAIL
15A
CIG
2
1
7 IC
3
1
GR
3
3
4 IL
G–B
20 4C
10 3A
16 4C
5 3A
1
4
3
(USA)
3
GR
5
L–W
(Canada)
2
L–W
TAIL
Relay
G–W
8 IF
L–W
G–W
(USA)
G–W
(USA)
7 IH
14
TAIL
D2
Daytime Running
Light Relay
C7
Clock
G
2
W–B
G
3
(USA)
G–W
15
(USA)
T
13
Light
Control
SW
OFF
18 3A
Tail
Head
W–B
10
G
(Canada)
(USA)
C12
Combination SW
I4
11 3A
W–B
11 4B
W–B
(USA)
21 4B
A
A
J6
Junction
Connector
IG
IE
106
2004 COROLLA (EWD533U)
J7
Junction
Connector
Service Hints
C7 Clock
4–Ground : Approx. 12 volts with the ignition SW at ACC or ON position
1–Ground : Always approx. 12 volts
3–Ground : Approx. 12 volts with the light control SW at Tail or Head position
2–Ground : Always continuity
: Parts Location
Code
See Page
Code
See Page
C7
34
D2
34
C12
34
J6
35
Code
J7
See Page
35
: Relay Blocks
Code
See Page
Relay Blocks (Relay Block Location)
1
22
Engine Room R/B (Engine Compartment Left)
3
28
RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code
IC
IF
IH
See Page
25
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
25
Instrument Panel Wire and Instrument Panel J/B (Lower
(
Finish Panel))
IL
24
3A
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4B
4C
: Ground Points
Code
See Page
Ground Points Location
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
: Splice Points
Code
I4
See Page
42
Wire Harness with Splice Points
Code
See Page
Wire Harness with Splice Points
Instrument Panel Wire
107
2004 COROLLA (EWD533U)
Power Outlet
From Power Source System (See Page 48)
15A
CIG
15A
P/POINT
6 IH
L
GR
8 IF
10 3A
9 3A
GR
GR
6 3A
3
2
3
3
P–POINT
Relay
1
5
3
3
W–B
L–Y
1
IF1
L–Y
GR
12 3A
2
2
11 3A
P4
Power Outlet
(Rear)
C5
Power Outlet
(Front)
1
W–B
W–B
1
IG
J7
Junction
Connector
J6
Junction
Connector
A
W–B
IF1
W–B
2
A
A
IE
108
2004 COROLLA (EWD533U)
Service Hints
P–POINT Relay
3–5 : Closed with ignition SW at ACC or ON position
1–Ground : Always continuity
: Parts Location
Code
See Page
Code
See Page
C5
34
J7
35
J6
35
P4
35
Code
See Page
: Relay Blocks
Code
3
See Page
28
Relay Blocks (Relay Block Location)
RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code
IF
IH
3A
See Page
Junction Block and Wire Harness (Connector Location)
25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code
IF1
See Page
42
Joining Wire Harness and Wire Harness (Connector Location)
Console Box Wire and Instrument Panel Wire (Under the Instrument Panel Center)
: Ground Points
Code
See Page
Ground Points Location
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
109
2004 COROLLA (EWD533U)
Remote Control Mirror
From Power Source System (See Page 48)
15A
CIG
GR
8 IF
10 3A
GR
8 3A
R6
Remote Control Mirror SW
8
B
Left
Right
Up
Down
Left
Right
Left
Right
Operation
SW
Right/
Down
Select
SW
VR
M+
3
E
6
7
BR–W
W–B
R–W
L
VL
4
LG
HR
2
R
HL
5
Left/
Up
IJ1
IJ1
3
MV
MH
MV
M+
BR–W
2
M
M+
15 3C
W–B
BR–W
M
R18
Remote Control
Mirror RH
M
2
BR–W
M
R17
Remote Control
Mirror LH
14 3C
BR–W
1
21 4B
16 3C
9
IJ1
9 IC2
A
BR–W
3
MH
8
R–W
LG
1
10
R
8 IC2
L
22 4B
10 IC2
IE
110
2004 COROLLA (EWD533U)
J6
Junction
Connector
Service Hints
R6 Remote Control Mirror SW
8–6 : Continuity with the operation SW at Down or Right position
6–7 : Continuity with the operation SW at Up or Left position
8–Ground : Approx. 12 volts with the ignition SW at ACC or ON position
7–Ground : Always continuity
: Parts Location
Code
See Page
Code
See Page
J6
35
R17
37
R6
35
R18
37
Code
See Page
: Junction Block and Wire Harness Connector
Code
IF
3A
3C
4B
See Page
Junction Block and Wire Harness (Connector Location)
25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
IC2
40
Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IJ1
42
Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: Ground Points
Code
IE
See Page
40
Ground Points Location
Behind the Combination Meter
111
2004 COROLLA (EWD533U)
Automatic Glare–Resistant EC Mirror with Compass
From Power Source System (See Page 48)
* 1 : w/ Moon Roof
* 2 : w/o Moon Roof
10A
GAUGE
B–L
5 IE
7
I12
Inner Mirror
(* 1)
W–B
B
B1
1 IE
W–B
10 IH
A
J7
Junction
Connector
IG
112
2004 COROLLA (EWD533U)
(* 2)
B
(* 1)
6
Service Hints
I12 Inner Mirror
7–Ground : Approx. 12 volts with the ignition SW at ON position
6–Ground : Always continuity
: Parts Location
Code
See Page
I12
Code
36
J7
See Page
Code
See Page
35
: Junction Block and Wire Harness Connector
Code
See Page
Junction Block and Wire Harness (Connector Location)
IE
25
Roof Wire and Instrument Panel J/B (Lower Finish Panel)
IH
25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Ground Points
Code
IG
See Page
40
Ground Points Location
Right Kick Panel
: Splice Points
Code
B1
See Page
44
Wire Harness with Splice Points
Code
See Page
Wire Harness with Splice Points
Roof Wire
113
2004 COROLLA (EWD533U)
Power Window
From Power Source System (See Page 48)
10A
GAUGE
30A
POWER
D11
Power Window Master SW
B
B
1
6
7
B
B
B
5
B
1
2 IC3
B
2
1 IC1
Down
IC
P/W
Relay
3
6 4B
9 4B
4 IF
18 ID
8 4B
7 4B
B
10
4B
B
B
B
7
IG
W–B
2
B
Front LH
G
DD
9
Y
DU
4
W–B
E
3
W–B
E
1
B4
B
B
W–B
B
Y
G
W–B
6 IC1
A
W–B
J6
Junction
Connector
A
IE
114
2004 COROLLA (EWD533U)
4
M
5
P8
Power Window Motor
Front LH
D11
Power Window Master SW
Front RH
Rear LH
Rear RH
Window Lock SW
Lock
Normal
PU
PD
RLU
RLD
RRU
RRD
7 IC3
6 IC3
5 IC3
4 IC3
3 IC3
L–B
1 IC3
R–G
L–R
16
R–B
10
L–B
13
R–G
12
L–W
15
G–R
18
3 ID1
4 ID1
B
B
L–B
B
R–B
L–R
2 BA1
4 BA1
5 BA1
2 BB1
4 BB1
5 BB1
M
5
P9
Power Window Motor
Front RH
M
D
P7
Power Window Control
SW Rear RH
Down
Up
3
P10
Power Window Motor
Rear LH
SD
U
1
4
L–R
B
Down
5
P6
Power Window Control
SW Rear LH
D
2
SU
1
G
3
5
4 B
Y
Y
4
SD
U
1
Y
D
2
SU
G
U
3
5
4 B
G
Up
Down
SD
L–R
B
2
SU
P5
Power Window Control
SW Front RH
5
4 B
R–B
R–G
IJ2
R–B
5
Up
IJ2
L–W
4
G–R
IJ2
B
6
B
G–R
L–W
B
5
M
4
P11
Power Window Motor
Rear RH
115
2004 COROLLA (EWD533U)
Power Window
System Outline
When the ignition SW is turned on, the current flows through the GAUGE fuse to TERMINAL 1 of the P/W relay to
TERMINAL 2 to GROUND. This activates the relay and the current flows through the POWER fuse to TERMINAL 5 of the
relay to TERMINAL 3 to TERMINAL B of the power window master SW, TERMINAL 4 of the power window control SW.
1. Manual Operation (Driver’s Window)
With the ignition SW turned on and with the power window master SW (Front LH) in Up position, the current flowing to
TERMINAL B of the power window master SW flows to TERMINAL DU of the master SW to TERMINAL 4 of the power
window motor to TERMINAL 5 to TERMINAL DD of the master SW to TERMINAL E to GROUND and rotates the power
window motor in the up direction. The window ascends only while the SW is being pulled. In down operation, the flows of
current from TERMINAL B of the power window master SW to TERMINAL DD to TERMINAL 5 of the motor to TERMINAL 4
to TERMINAL DU of the master SW to TERMINAL E to GROUND, flowing in the opposite direction to manual up operation
and rotating the motor in reverse, thus opening the window.
2. Auto Down Operation (Driver’s Window)
When the front LH window control SW in the power window master SW is pushed strongly on the down side, current flows
from TERMINAL B of the master SW to TERMINAL DD to TERMINAL 5 of the power window motor to TERMINAL 4 to
TERMINAL DU of the master SW to TERMINAL E to GROUND. Because the hold circuit inside the master SW keeps the
relay on the down side activated, the power window motor continues operating even if the power window master SW is
released. When the driver’s window is fully opened, the hold circuit turns off and the relay on the down side turns off, and
auto down operation is completed.
3. Stopping of Auto Down Operation (Driver’s Window)
When the master SW (Front LH) is pulled to the up side during auto down operation, a ground circuit opens in the master
SW and current does not flow from TERMINAL DU of the master SW to TERMINAL E, so the motor stops, causing auto
down operation to stop. If the master SW is pulled continuously, the motor rotates in the up direction in manual up operation.
4. Manual Operation (Front RH Window)
With the power window control SW (Front RH) pulled to the up side, current flowing from TERMINAL 4 of the power window
control SW flows to TERMINAL 3 to TERMINAL 4 of the power window motor to TERMINAL 5 to TERMINAL 1 of the power
window control SW to TERMINAL 2 to TERMINAL PD of the master SW to TERMINAL E to GROUND and rotates the power
window motor (Front RH) in the up direction. Up operation continues only while the power window control SW is pulled to the
up side. When the window descends, the current flowing to the motor flows in the opposite direction, from TERMINAL 4 to
TERMINAL 5, and the motor rotates in reverse. When the window lock SW is pushed to the lock side, the ground circuit to
the passenger’s window becomes open. As a result, even if Open/Close operation of the passenger’s window is attempted,
the current from TERMINAL E of the power window master SW is not grounded and the motor does not rotate, so the
passenger’s window can not be operated and window lock occurs.
5. Manual Operation (Rear LH, Rear RH Window)
With the power window control SW (Rear LH, rear RH) pulled to the up side, current flowing from TERMINAL 4 of the power
window control SW flows to TERMINAL 3 to TERMINAL 5 of the power window motor to TERMINAL 4 to TERMINAL 1 of the
power window control SW to TERMINAL 2 to TERMINAL RLD, RRD of the master SW to TERMINAL E to GROUND and
rotates the power window motor (Rear LH, rear RH) in the up direction. Up operation continues only while the power window
control SW is pulled to the up side. When the window descends, the current flowing to the motor flows in the opposite
direction, from TERMINAL 5 to TERMINAL 4, and the motor rotates in reverse. When the window lock SW is pushed to the
lock side, the ground circuit to the passenger’s window becomes open. As a result, even if Open/Close operation of the
passenger’s window is attempted, the current from TERMINAL E of the power window master SW is not grounded and the
motor does not rotate, so the passenger’s window can not be operated and window lock occurs.
Service Hints
D11 Power Window Master SW
B–Ground : Approx. 12 volts with the ignition SW at ON position
DU–Ground : Approx. 12 volts with the ignition SW on and master SW (Front LH window) at Up position
DD–Ground : Approx. 12 volts with the ignition SW on and master SW (Front LH window)
at Down or Auto Down position
E–Ground : Always continuity
Window Lock SW
Open with window lock SW at Lock position
116
2004 COROLLA (EWD533U)
: Parts Location
Code
See Page
Code
See Page
Code
See Page
D11
36
P6
37
P9
37
J6
35
P7
37
P10
37
P5
37
P8
37
P11
37
: Junction Block and Wire Harness Connector
Code
ID
IF
IG
4B
See Page
Junction Block and Wire Harness (Connector Location)
25
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code
IC1
See Page
Joining Wire Harness and Wire Harness (Connector Location)
40
Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
ID1
42
Instrument Panel Wire and Floor Wire (Left Kick Panel)
IJ2
42
Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
BA1
44
Rear Door LH Wire and Floor Wire (Left Center Pillar)
BB1
44
Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar)
IC3
: Ground Points
Code
IE
See Page
40
Ground Points Location
Behind the Combination Meter
: Splice Points
Code
B4
See Page
44
Wire Harness with Splice Points
Code
See Page
Wire Harness with Splice Points
Front Door LH Wire
117
2004 COROLLA (EWD533U)
Door Lock Control
From Power Source System (See Page 48)
25A
DOOR
1
+B
20 4A
17 4A
Unlock
Lock
W–B
A
3
W–B
6 IC1
W–B
A
A
A
J7
Junction
Connector
IG
W–B
W–B
W–B
W–B
IJ2
W–B
1
L
5
W–B
B4
IJ2
6
W–B
3 A (* 1)
3 B (* 2)
12
L
8 A (* 1)
5 B (* 2)
5 A
6 B
IJ2
Unlock
L
7
L–W
4 IC1
18 4A
Lock
5 IC1
21 4A
D12
Door Lock Control SW Front RH
19 4A
L–W
22 4A
L
L
I11(A)
Integration Relay
L–W
W–B
UL1
8 A
L–W
4 IF
L1
9 A
L–W
10 IH
W–B
9
D10(B), D11(A)
Door Lock Control SW Front LH
GND
J6
Junction
Connector
IE
118
2004 COROLLA (EWD533U)
B3
W–B
W–B
* 1 : w/ Power Window
* 2 : w/o Power Window
LSWP
18 A
W–R
UL2
5 A
L–B
L2
7 A
G
R
ACTD
1 A
W
LSWD
19 A
L–Y
UL3
6 A
I11(A)
Integration Relay
G
2 4A
3 4A
1 4A
L
R
L
8 IC1
9 IC1
G
L–Y
W
R
L
G
L–B
W–R
R
L
9
10
8
1
4
6
5
7
1
4
10
M
D8
Door Key Lock and Unlock SW Front LH
Door Lock Motor Front LH
Door Unlock Detection SW Front LH
IJ2
Unlock
IJ2
8
W–B
3
L
IJ2
Detection
G
11
Lock
Lock
L–B
W
3 IC1
Detection
L–Y
10 IC1
Unlock
G
11 IC1
7
W–B
W–R
R
8
IJ2
9
IJ2
M
D9
Door Key Lock and Unlock SW Front RH
Door Lock Motor Front RH
Door Unlock Detection SW Front RH
W–B
119
2004 COROLLA (EWD533U)
Door Lock Control
L
8 BB1
3 BB1
8 BA1
3 BA1
L
9 4A
R
4 4A
R
10 4A
9 ID
L
6 4A
20 ID
L
2 IK
R
5 IK
I11(A)
Integration Relay
R
2
L
ACT+
3
R
8 4A
ACT–
1
4
1
4
5 4A
7 4A
L
R
L
M
M
D14
Door Lock Motor Rear RH
D13
Door Lock Motor Rear LH
120
2004 COROLLA (EWD533U)
1
L–B
PRCTY
6
14 ID
1
15 ID
1
2
U1
Unlock Warning SW
L–B
1 ID
D7
Door Courtesy SW Rear RH
PCTY
R–Y
13 A
D6
Door Courtesy SW Rear LH
R–B
5
D5
Door Courtesy SW Front RH
R–W
DCTY
W–B
1
D4
Door Courtesy SW Front LH
R–W
I11(A)
Integration Relay
KSW
4
8
IJ
16 4A
15 4A
1
A
J6
Junction
Connector
IE
2004 COROLLA (EWD533U)
121
Door Lock Control
System Outline
The current always flows to TERMINAL 1 of the integration relay through the DOOR fuse.
1. Manual Lock Operation
When the door lock control SW or door key lock and unlock SW are operated to Lock position, a lock signal is input to
TERMINAL (A) 9 or (A) 7 of the integration relay and causes the relay to function. The current flows from TERMINAL 1 of the
relay to TERMINAL 2 to the door lock motors to TERMINALS (A) 1 and 3 of the relay to TERMINAL 9 to GROUND and the
door lock motors locks the door.
2. Manual Unlock Operation
When the door lock control SW or door key lock and unlock SW are operated to Unlock position, an unlock signal is input to
TERMINAL (A) 8, (A) 6 or (A) 5 of the integration relay and causes the relay to function. The current flows from TERMINAL 1
of the relay to TERMINALS (A) 1 and 3 to the door lock motors to TERMINAL 2 of the relay to TERMINAL 9 to GROUND
and the door lock motors unlocks the door.
3. Double Operation Unlock Operation
When the door key lock and unlock SW LH is turned to the unlock side, only the driver’s door is unlocked. By turning the
door key lock and unlock SW LH to the unlock side, a signal is input to TERMINAL (A) 6 of the relay, and if the signal is input
again within 3 seconds by turning the SW to the unlock side again, current flows from TERMINAL 3 of the integration relay to
the door lock motors to TERMINAL 2 of the relay to TERMINAL 9 to GROUND, causing the door lock motors to operate and
unlock the doors.
4. Ignition Key Reminder Operation
∗ Operating door lock knob (Operation of door lock motors)
With the ignition key in the cylinder (Unlock warning SW on), when the door is opened and locked using door lock knob
(Door lock motor), the door is locked once but each door is unlocked soon by the function of the relay. As a result, the
current flows from TERMINAL 1 of the integration relay to TERMINALS (A) 1 and 3 to the door lock motors to
TERMINAL 2 of the relay to TERMINAL 9 to GROUND and unlocks all the doors.
∗ Operating door lock control SW or door key lock and unlock SW
With the ignition key in the cylinder (Unlock warning SW on), when the door is opened and locked using door lock
control SW or key SW, the door is locked once but each door is unlocked by the function of SW contained in motors,
and the signal is input to TERMINAL (A) 19 of the relay. According to this input signal, the current flows from TERMINAL
1 of the relay to TERMINALS (A) 1 and 3 to the door lock motors to TERMINAL 2 of the relay to TERMINAL 9 to
GROUND and unlocks all the doors.
∗ In case of key less lock
With the ignition the key in the cylinder (Unlock warning SW on), when the unlock function is disturbed, for example
pushing the door lock knob etc., the door holds on lock condition. After closing the door after, door courtesy SW inputs
the signal into TERMINAL 5 or 6 or (A) 13 of the integration relay. By this input signal, the relay works and current flows
from TERMINAL 1 of the relay to TERMINALS (A) 1 and 3 to the door lock motors to TERMINAL 2 of the relay to
TERMINAL 9 to GROUND and unlocks all the doors.
122
2004 COROLLA (EWD533U)
Service Hints
I11 (A) Integration Relay
9–Ground : Always continuity
5–Ground : Continuity with the driver’s door open
1–Ground : Always approx. 12 volts
2–Ground : Approx. 12 volts 0.2 seconds with following operation
∗ Door lock control SW locked
∗ Locking the driver’s, front passenger’s door cylinder with the key
(A) 9–Ground : Continuity with the door lock control SW locked
(A)13–Ground : Continuity with the front passenger’s door open
(A)19–Ground : Continuity with the driver’s door lock knob unlocked
(A) 8–Ground : Continuity with the door lock control SW unlocked
(A) 5–Ground : Continuity with the front passenger’s door lock cylinder unlock with the key
(A) 6–Ground : Continuity with the driver’s door lock cylinder unlocked with the key
(A) 7–Ground : Continuity with the driver’s, front passenger’s door lock cylinder locked with the key
(A) 1 or 3–Ground : Approx. 12 volts 0.2 seconds with following operation
∗ Door lock control SW unlocked
∗ Door lock control SW locked with the ignition key in cylinder and the driver’s door open
(Ignition key reminder function)
∗ Door lock knob locked with the ignition key in cylinder and the driver’s door open
(Ignition key reminder function)
∗ Unlocking the driver’s, front passenger’s door cylinder with the key
D4, D5, D6, D7 Door Courtesy SW Front LH, RH, Rear LH, RH
1–Ground : Closed with the door open
U1 Unlock Warning SW
1–2 : Closed with the ignition key in cylinder
: Parts Location
Code
See Page
Code
See Page
D9
Code
36
See Page
D4
36
D14
D5
36
D10
B
36
D6
36
D11
A
36
J6
35
D7
36
D12
36
J7
35
D8
36
D13
36
U1
35
I11
36
A
35
: Junction Block and Wire Harness Connector
Code
ID
See Page
25
Junction Block and Wire Harness (Connector Location)
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IF
IH
25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IJ
IK
24
4A
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
IC1
40
Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IJ2
42
Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
BA1
44
Rear Door LH Wire and Floor Wire (Left Center Pillar)
BB1
44
Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar)
: Ground Points
Code
See Page
Ground Points Location
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
123
2004 COROLLA (EWD533U)
Door Lock Control
: Splice Points
Code
B3
See Page
44
Wire Harness with Splice Points
Front Door RH Wire
Code
B4
See Page
44
124
2004 COROLLA (EWD533U)
Wire Harness with Splice Points
Front Door LH Wire
Memo
125
2004 COROLLA (EWD533U)
Wireless Door Lock Control
From Power Source System (See Page 48)
25A
DOOR
1
+B
20 4A
17 4A
Unlock
Lock
W–B
A
3
W–B
6 IC1
W–B
A
A
A
J7
Junction
Connector
IG
W–B
W–B
W–B
W–B
IJ2
W–B
1
L
5
W–B
B4
IJ2
6
W–B
3 A (* 1)
3 B (* 2)
12
L
8 A (* 1)
5 B (* 2)
5 A
6 B
IJ2
Unlock
L
7
L–W
4 IC1
18 4A
Lock
5 IC1
21 4A
D12
Door Lock Control SW Front RH
19 4A
L–W
22 4A
L
L
I11(A)
Integration Relay
L–W
W–B
UL1
8 A
L–W
4 IF
L1
9 A
L–W
10 IH
W–B
9
D10(B), D11(A)
Door Lock Control SW Front LH
GND
J6
Junction
Connector
IE
126
2004 COROLLA (EWD533U)
B3
W–B
W–B
* 1 : w/ Power Window
* 2 : w/o Power Window
LSWP
18 A
W–R
UL2
5 A
L–B
L2
7 A
G
R
ACTD
1 A
W
LSWD
19 A
L–Y
UL3
6 A
I11(A)
Integration Relay
G
2 4A
3 4A
1 4A
L
R
L
8 IC1
9 IC1
G
L–Y
W
R
L
G
L–B
W–R
R
L
9
10
8
1
4
6
5
7
1
4
10
M
D8
Door Key Lock and Unlock SW Front LH
Door Lock Motor Front LH
Door Unlock Detection SW Front LH
IJ2
Unlock
IJ2
8
W–B
3
L
IJ2
Detection
G
11
Lock
Lock
L–B
W
3 IC1
Detection
L–Y
10 IC1
Unlock
G
11 IC1
7
W–B
W–R
R
8
IJ2
9
IJ2
M
D9
Door Key Lock and Unlock SW Front RH
Door Lock Motor Front RH
Door Unlock Detection SW Front RH
W–B
127
2004 COROLLA (EWD533U)
Wireless Door Lock Control
I11(A)
Integration Relay
DCTY
2
5
5 IK
2 IK
R
L
8 BB1
3 BB1
8 BA1
3 BA1
R
L
9 4A
L
4 4A
L
10 4A
9 ID
R
6 4A
20 ID
R
L
ACT+
3
R
8 4A
ACT–
1
4
1
4
5 4A
PCTY
PRCTY
13 A
6
1 ID
14 ID
15 ID
7 4A
R–Y
R–B
R–W
R
R–W
L
D14
Door Lock Motor Rear RH
D13
Door Lock Motor Rear LH
128
2004 COROLLA (EWD533U)
1
D7
Door Courtesy SW Rear RH
1
D6
Door Courtesy SW Rear LH
M
1
D5
Door Courtesy SW Front RH
M
1
D4
Door Courtesy SW Front LH
L
From Power Source System (See Page 48)
1
1
1
40A
HEAD
MAIN
10A
HORN
2
I11(A)
Integration Relay
R
4
7
8
8 IJ
8 ID
10 ID
HORN
10 A
1
11 4A
5 3C
3
HORN
Relay
1
5
5
1
1
1
4
R–B
IA2
18 IA5
13 ID
R–Y
15 4A
6 3C
R
G–Y
13 4A
R–Y
7 IC
B
L–B
3
HEAD
Relay
1
3 3C
2
G–Y
Y–B
16 4A
1
11 A
2
1 3C
1
1
HRLY
R
PRG
G–Y
25 A
RDA
L–W
B–W
1
KSW
1
B–W
1
R
HAZ
2
2
1
15A
DOME
6
G–Y
L–R
H–LP
D2
Daytime
Running
Light Relay
U1
Unlock Warning SW
2
1
2
3
RDA
PRG
5
+B
D3
Door Control Receiver
GND
W–B
1
W–B
A B
J 8(A), J 9(B)
Junction Connector
A A
A
J6
Junction
Connector
IE
W–B
T2
Turn Signal Flasher Relay
8
EHW
L–B
Y–B
H
L–Y
7
BH
129
2004 COROLLA (EWD533U)
Wireless Door Lock Control
System Outline
Door lock control (Lock and unlock) and panic control (TVIP alarm and flash) is performed by remote control, without the
ignition key inserted in the door key cylinder, using low–power electrical waves emitted by a transmitter.
1. Wireless Door Lock or Unlock Normal Operation
With the ignition key not inserted into the ignition key cylinder (Unlock warning SW off) and all the doors completely closed,
when the lock or unlock button (Transmitter) is pushed, the door control receiver receives the electrical waves from the
transmitter, and sends a signal to the integration relay causing it to operate.
As a result, the integration relay judges whether the door is locked or unlocked based on the signal from the door lock motor
and door unlock detection SW, and sends a signal to switch the condition from lock to unlock or vice versa, causing the door
lock motor to operate.
2. Visual Confirmation of Lock or Unlock
If all doors indicate that they are locked after the lock command, parking lights and taillights will flash once. If any door
indicates that it is open after the unlock command, parking lights and taillights will flash twice.
3. Wireless Door Unlock Operation
Pushing the unlock button (Transmitter) once, driver’s door is unlocked. Furthermore, pushing the button again within 3
seconds, the other doors are unlocked.
4. Automatic Lock Operation
With the ignition key not inserted into the ignition key cylinder (Unlock warning SW off) and all the doors completely closed,
after pushing the button (Transmitter) to unlock all the doors, if a door is not opened within 30 seconds, all the doors will be
automatically relocked.
5. Wireless Control Stop Function
If a door is open (Door courtesy SW on), a signal is input from the door courtesy SW to the integration relay stopping
wireless door lock or unlock.
If the ignition key is in the ignition key cylinder (Unlock warning SW on), the unlock warning SW inputs a signal to the
integration relay stopping wireless door lock or unlock.
6. Repeat Function
In case an appropriate lock detection signal is not received after outputting a lock signal when pushing the lock button
(Transmitter), 1 seconds later, the integration relay output the lock signal again.
7. Remote Panic Operation
Panic will function when doors are locked or unlocked, open or closed. When the panic button (Transmitter) is pushed once,
theft alarm sounds and headlights and taillights flash. Then, the panic or the unlock button (Transmitter) is pushed once
more, sounding and flashing will stop. Panic will not function when ignition key is in ignition key cylinder.
130
2004 COROLLA (EWD533U)
Service Hints
I11 (A) Integration Relay
9–Ground : Always continuity
5–Ground : Continuity with the driver’s door open
1–Ground : Always approx. 12 volts
2–Ground : Approx. 12 volts 0.2 seconds with following operation
∗ Door lock control SW locked
∗ Locking the driver’s, front passenger’s door cylinder with the key
(A) 9–Ground : Continuity with the door lock control SW locked
(A)13–Ground : Continuity with the front passenger’s door open
(A)19–Ground : Continuity with the driver’s door lock knob unlocked
(A) 8–Ground : Continuity with the door lock control SW unlocked
(A) 5–Ground : Continuity with the front passenger’s door lock cylinder unlock with the key
(A) 6–Ground : Continuity with the driver’s door lock cylinder unlocked with the key
(A) 7–Ground : Continuity with the driver’s, front passenger’s door lock cylinder locked with the key
(A) 1 or 3–Ground : Approx. 12 volts 0.2 seconds with following operation
∗ Door lock control SW unlocked
∗ Door lock control SW locked with the ignition key in cylinder and the driver’s door open
(Ignition key reminder function)
∗ Door lock knob locked with the ignition key in cylinder and the driver’s door open
(Ignition key reminder function)
∗ Unlocking the driver’s, front passenger’s door cylinder with the key
D4, D5, D6, D7 Door Courtesy SW Front LH, RH, Rear LH, RH
1–Ground : Closed with the door open
U1 Unlock Warning SW
1–2 : Closed with the ignition key in cylinder
D3 Door Control Receiver
5–Ground : Always approx. 12 volts
1–Ground : Always continuity
: Parts Location
Code
See Page
Code
See Page
D9
Code
34
D3
36
D10
B
36
D4
36
D11
A
36
J8
D5
36
D12
36
J9
D6
36
D13
36
T2
35
D7
36
D14
36
U1
35
D8
36
I11
36
See Page
D2
A
J6
35
J7
35
A
36
B
36
35
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
See Page
Junction Block and Wire Harness (Connector Location)
IC
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID
25
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IF
IH
25
IJ
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IK
24
3C
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4A
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
131
2004 COROLLA (EWD533U)
Wireless Door Lock Control
: Connector Joining Wire Harness and Wire Harness
Code
IA2
See Page
Joining Wire Harness and Wire Harness (Connector Location)
40
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IC1
40
Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IJ2
42
Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
BA1
44
Rear Door LH Wire and Floor Wire (Left Center Pillar)
BB1
44
Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar)
IA5
: Ground Points
Code
See Page
Ground Points Location
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
BH
44
Under the Left Quarter Pillar
: Splice Points
Code
B3
See Page
44
Wire Harness with Splice Points
Front Door RH Wire
Code
B4
See Page
44
132
2004 COROLLA (EWD533U)
Wire Harness with Splice Points
Front Door LH Wire
Memo
133
2004 COROLLA (EWD533U)
TVIP System
From Power Source System (See Page 48)
IG2
10A
ECU–IG
R
10A
ECU–B
9 IF
1 IH
R–B
R
B
R
I10
Ignition SW
B–W
I7
(A/T)
ST2 4
(M/T)
5 AM2
12
R
6 IM
II2
R
(M/T)
A
15A
AM2
1
1 IM
4 IF
P
N
(A/T)
B
II1
2
G
2
1
B
B
4
J2
Junction
Connector
S8
Starter Cut
Relay
G
(A/T)
1
B
3
R–B
B–R
(M/T)
B–R
W–B
W–B
B
B–R
10 IH
1
30A
MAIN
I2
6
2
IA4
7
B–W
I7
R–B
2
9
B–W
5
B–W
B–R
ST
Relay
A2
Park/Neutral Position SW
R
1
C8
Clutch Start SW
3
3 IM
(A/T)
A
11 IL
2
J2
Junction Connector
IA2
(A/T)
3
8
1
TRIG
S+B
B
10
1
IA5
11
II2
B
S3
Starter
B
(A/T)
B
B
1 1A
(M/T)
G3
Glass Breakage Sensor ECU
I9
FL MAIN
2. 0L
W–B
W–B
W–B
W–B
W–B
W–B
W–B
Battery
W–B
A
A
A
A
W–B
IE
J6
Junction
Connector
134
2004 COROLLA (EWD533U)
25
L
W–B
R–W
E
IND
DSWL
KSW
35
HORN
12
CTY
DSWD
5
19
40
R–W
29
B–R
IOUT
R
11
G–Y
21
L–B
SRLY
2
R–B
IG
R–W
+B1
10
B–W
T3
TVIP ECU
11 ID2
R–B
A
J10
Junction Connector
R–W
B–W
A
GMIC
4
5
W–B
MIC
L–B
1
W–B
19 3A
11 3A
Microphone
1
2
R–W
W–B
4
Security
3
S4
Security
Indicator
2
W
G3
Glass Breakage
Sensor ECU
(Shielded)
W–B
6
GND
R–W
L
3
IOUT
1
U1
Unlock Warning SW
I8
L4
Luggage Compartment
Light SW
W–B
W–B
I8
R–W
B–R
R
G–Y
W–B
W–B
W–B
W–B
W–B
A
W–B
A
A
W–B
J7
Junction Connector
IG
135
2004 COROLLA (EWD533U)
W–B
3 IC1
9
10
8
6 IC1
W–R
IJ2
1
10
8
W–R
L–B
IJ2
3
IJ2
6
5
7
28
W–B
W–B
136
2004 COROLLA (EWD533U)
6
IE
R–W
4
W–B
Off
On
9
R–W
W
DMLP
Door
6 3C
I13
Interior Light
2 4A
L–W
38
W–R
LSWP
R–Y
18
L–B
UL2
D9
Door Key Lock and Unlock SW Front RH
Door Unlock Detection SW Front RH
L–B
G
LSWD
Detection
Unlock
G
11
Lock
I1
37
W
L–Y
L–W
T3
TVIP ECU
R7
Rheostat
7
W–B
W
10 IC1
W
17
D8
Door Key Lock and Unlock SW Front LH
Door Unlock Detection SW Front LH
L–Y
11 IC1
L–Y
16
G
UL3
Detection
Unlock
G
L2
W–B
W–B
HEAD
W–B
8
6
R
8
G
Y–B
HAZD
Lock
3 3C
R
Y–B
2 3C
T2
Turn Signal Flasher Relay
EHW
TVIP System
From Power Source System (See Page 48)
1
15A
DOME
2
1
IRSG
7 IC
G
4 IE
W
5 3C
1 4A
2
1
3
R–B
IG
7
3
R
R–W
R–W
R
R
G–Y
G–Y
19 4B
IJ2
21 4B
From Power Source System (See Page 48)
1
1
40A
HEAD
MAIN
I11(A)
Integration Relay
10A
HORN
2
2
1
R
B–W
1
TVSS
26 A
DCTY
PCTY
PRCTY
13 A
5
R
6
B–W
1
1
1
1
W
1
R–B
R–Y
3
1
1
1
IA2
18
R–Y
D7
Door Courtesy SW Rear RH
IA5
1
H6
Horn
D6
Door Courtesy SW Rear LH
D5
Door Courtesy SW Front RH
1
2
G–Y
R–W
D4
Door Courtesy SW Front LH
1
HORN
Relay
5
1
4
1
5
HEAD
Relay
2
1
1
3
B
15 ID
G–Y
R
14 ID
R–Y
4 IK
R–B
1 ID
R–W
R–W
3 IL
H
7
R
D2
Daytime Running
Light Relay
6
H–LP
13 4A
R–W
R
12 4A
G–Y
137
2004 COROLLA (EWD533U)
TVIP System
Service Hints
T3 TVIP ECU
10–Ground : Approx. 12 volts with the ignition SW at ON position
2–Ground : Always approx. 12 volts
29–Ground : Always continuity
: Parts Location
Code
See Page
A2
32
C8
D2
D4
36
D5
36
D6
Code
See Page
Code
See Page
G3
35
L4
36
34
H6
32
R7
35
34
I10
35
S3
33
35
S4
35
I13
36
S8
35
36
J2
35
T2
35
D7
36
J6
35
T3
35
D8
36
J7
35
U1
35
D9
36
J10
36
I11
A
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
See Page
Junction Block and Wire Harness (Connector Location)
IC
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID
25
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IE
25
Roof Wire and Instrument Panel J/B (Lower Finish Panel)
IF
IG
25
IH
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IK
IL
24
IM
1A
3A
3C
4A
4B
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
IA2
IA4
40
Engine
g
Room Main Wire and Instrument Panel Wire ((Left Side of the Instrument Panel Reinforcement))
IC1
40
Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
ID2
42
Instrument Panel Wire and Floor Wire (Left Kick Panel)
42
Engine Wire and Instrument Panel Wire (Blower Unit RH)
42
Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IA5
II1
II2
IJ2
: Ground Points
Code
See Page
Ground Points Location
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
138
2004 COROLLA (EWD533U)
: Splice Points
Code
See Page
Wire Harness with Splice Points
I1
I2
Code
I8
42
Instrument Panel Wire
I9
See Page
42
Wire Harness with Splice Points
Instrument Panel Wire
I7
139
2004 COROLLA (EWD533U)
Moon Roof
From Power Source System (See Page 48)
1
30A
POWER
10A
GAUGE
2
5
1
M2
Moon Roof Control Relay and SW
3
2
2 IE
4 IF
10 IH
1 IE
B
W–B
W–B
W–B
P/W
Relay
Open
Close
Up
Down
IG
LS1
LS2
MTR+
MTR–
6
7
4
5
GND
8
R–L
R
G
6
1
2
LS2
W–B
G–W
5
LS1
B
2
M
W–B
W–B
J6
Junction
Connector
W–B
A
B2
W–B
B2
A
J7
Junction
Connector
IE
M3
Moon Roof Motor and Limit SW
W–B
3
W–B
4
IG
140
2004 COROLLA (EWD533U)
W–B
System Outline
The moon roof can be operated when the ignition SW is turned to ON position.
1. Slide Open Operation
The moon roof fully opens automatically by pressing the slide open button of the moon roof control SW once. If the moon
roof control switch is pressed again when the moon roof is operating, the movement of the moon roof stops.
The operation of slide open is not worked when the moon roof at tilt up position.
2. Slide Close Operation
If you keep pressing the slide close button of the moon roof control SW when the moon roof is open, the moon roof closes
half and stops the operation once. If you keep pressing the slide close once again, the moon roof fully closes.
3. Tilt Up Operation
If you press the tilt up button of the moon roof control SW, the moon roof is tilted up. However, the moon roof is not tilted up
when it is open
4. Tilt Down Operation
If you press the tilt down button when the tilt up of the moon roof control SW is pressed, the moon roof is tilted down.
Service Hints
P/W Relay
5–3 : Closed with the ignition SW at ON position
M2 Moon Roof Control Relay and SW
2–Ground : Approx. 12 volts with the ignition SW at ON position
8–Ground : Always continuity
: Parts Location
Code
See Page
Code
See Page
J6
35
M2
37
J7
35
M3
37
Code
See Page
: Junction Block and Wire Harness Connector
Code
IE
IF
IH
See Page
Junction Block and Wire Harness (Connector Location)
25
Roof Wire and Instrument Panel J/B (Lower Finish Panel)
25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Ground Points
Code
See Page
Ground Points Location
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
: Splice Points
Code
B2
See Page
44
Wire Harness with Splice Points
Code
See Page
Wire Harness with Splice Points
Roof Wire
141
2004 COROLLA (EWD533U)
Electronically Controlled Transmission
5 AM2
IG2 6
B–W
5
IL
B–W
12
IC
ST2
8
IK
B–O
B–O
I10
Ignition SW
B
10 EA1
BR
1
J 2(A), J 3(B)
Junction
Connector
H A
B–R
3 IM
3 EA1
1
IA2
F B
J 2(A)
Junction Connector
R–W
B–W
H A
E2
Engine Coolant Temp.
Sensor
BR
BR
15A AM2
6 IM
B A
2
B A
Y
1
1
5
1
BR
W
Y
28 A
19 A
18 A
BATT
VC
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
EFI
Relay
15A
EFI
+B
1
SLT+
1 D
17 A
R–W
1
SLT–
SL
15 B
13 B
L
1
4
3
2
6
SLT+
SLT–
S1
SL
S2
GR
W
Y
B
W–B
FL MAIN
2. 0L
B
3 4B
G
B
1 1A
S1
16 A
L–W
1
R–Y
2
B
3
1
THW
1
2
30A
MAIN
E2
P
2
3 D
R–W
R–W
B–R
1
R–W
B–W
2 IA4
B
1 4B
Battery
9 EA1
6
II1
B
E1
Electronically Controlled Transmission Solenoid
ED
142
2004 COROLLA (EWD533U)
B–O
R–W
From Power Source System (See Page 48)
B–O
* 1 : w/ Cruise Control
14 IC
R–W
R–W
15A
STOP
3
2
2
2
5
II1
13
IL
1
II2
R–B
1
II1
P–B
5 IC
A2
A/T Shift Lever
Position SW
RL
4
TC
13
R–B
2L
8
LG–B
LL
G–W
T1
Throttle Position
Sensor
BR
G–W
1
LG
BR
D1
Data Link
Connector 3
RB
S9
Stop Light SW
2
3 4C
10 IK
3
R–B
Y
LG
LG–B
13 3C
4 4C
P–B
LG
9 IK
11 3C
G–W
R–B
21 A
19 C
VTA
8 C
9 C
11 C
20 D
L
2
R
TC
STP
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
L
SPD
ODLP
17 C
7 C
LG
E02
6 A
V–W
W–B
E01
7 A
C A
C A
A A
J 4(A), J 5(B)
Junction Connector
W–B
A10
O/D Main SW
II2
W–B
(* 1)
A A
10
E03
5 B
(* 1)
B B
4
R–Y
D A
J 2(A), J 3(B)
Junction Connector
2
D A
E1
7 B
W–B
EC
28 B
LG–B
L
L
ODMS
29 C
J 4(A)
Junction
Connector
OD1
18 C
BR
S2
14 B
LG
V–W
B B
17 3A
C14
Cruise Control ECU
14
OD
A
IG
A
W–B
BR
J7
Junction
Connector
ECT
W–B
L
11 3A
(* 1)
6
W–B
II1
W–B
3
EB
EC
143
2004 COROLLA (EWD533U)
Electronically Controlled Transmission
From Power Source System (See Page 48)
B–O
* 2 : w/o ABS
R–W
10A
GAUGE
R–W
2 IG
22 3B
R–W
32
4
20 3B
R–W
B–O
16 3B
R–W
II2
R–W
Speedometer
14
B A
B A
J 4(A), J 5(B)
Junction
Connector
O/D OFF
C B
C9
Combination Meter
9
(* 2)
W–G
I2
(* 2)
W–G
8 4C
R–W
W–G
10
V–W
LG
3
9 4C
II2
W–G
(* 2)
4
W–G
IA6
V–W
14
3
1
V1
Vehicle Speed Sensor
(Combination Meter)
LG
17
S1
Skid Control ECU
with Actuator
2
(* 2)
SP1
BR
V–W
C A
J 2(A), J 3(B)
Junction
Connector
(*2)
BR
C B
EB
144
2004 COROLLA (EWD533U)
System Outline
Previous automatic transaxle have selected each gear shift using mechanically controlled throttle hydraulic pressure,
governor hydraulic pressure and lock–up hydraulic pressure. The electronically controlled transmission, however, controls
the line pressure and lock–up pressure etc. electrically, through the solenoid valve. The engine control module controls each
solenoid valve based on the input signals from each sensor, which makes smooth driving possible by shift selection for each
gear that is most appropriate to the driving conditions at that time.
1. Gear Shift Operation
During driving, the engine control module selects the shift for each gear which is most appropriate to the driving conditions,
based on input signals from the engine coolant temp. sensor to TERMINAL THW of the engine control module, and also the
input signals to TERMINAL SPD of the engine control module from the vehicle speed sensor devoted to the electronically
controlled transmission. Current is then output to the electronically controlled transmission solenoid. When shifting to 1st
speed, the current flows from TERMINAL S1 of the engine control module to TERMINAL 3 of the solenoid to GROUND, and
from TERMINAL S2 of the engine control module to TERMINAL 6 of the electronically controlled transmission solenoid to
GROUND, and continuity to the No.1 and No.2 solenoid causes the shift.
For 2nd speed, the current flows from TERMINAL S1 of the engine control module to TERMINAL 3 of the solenoid to
GROUND, and from TERMINAL S2 of the engine control module to TERMINAL 6 of the solenoid to GROUND, and
continuity to solenoids No.1 and No.2 causes the shift.
For 3rd speed, there is no continuity to No. 1 solenoid, only to No. 2, causing the shift.
Shifting into 4th speed (Overdrive) takes place when there is no continuity to both No.1 and No.2 solenoid.
2. Stop Light SW Circuit
If the brake pedal is depressed (Stop light SW on ) when driving in lock–up condition, a signal is input to TERMINAL STP of
the engine control module, the engine control module operates and continuity to the lock–up solenoid is cut.
3. Overdrive Circuit
∗ Overdrive on
When the engine is turned on from ignition off, the engine control module turns the O/D on. When the O/D main SW is
pushed while the O/D is off, a signal is input into TERMINAL ODMS of the engine control module, and the O/D is turned
on by the engine control module. In this case, the engine control module controls the gear shift according to the vehicle’s
driving condition, using the O/D range. At this time, the O/D off indicator light is off.
∗ Overdrive off
When the O/D main SW is pushed while the O/D is on, a signal is input into TERMINAL ODMS of the engine control
module, and the O/D is turned off. At this time, the current flows through the O/D off indicator light to TERMINAL ODLP of
the engine control module. As a result, the O/D off indicator light turns on, and the engine control module controls the gear
shift according to the vehicle’s driving condition, without using the O/D range.
Service Hints
E3 (A), E4 (B), E5 (C), E6 (D) Engine Control Module
S1, S2–E1 : 9.0–14.0 volts with the ignition SW on and the solenoid on
0–1.5 volts with the ignition SW on and the solenoid off
L–E1 : 7.5–14.0 volts with the ignition SW on and the shift lever at L position
2–E1 : 7.5–14.0 volts with the ignition SW on and the shift lever at 2 position
R–E1 : 7.5–14.0 volts with the ignition SW on and the shift lever at R position
STP–E1 : 9.0–14.0 volts with the brake pedal depressed
THW–E2 : 0.2–1.0 volts with the engine coolant temp. 60°C (140°F) –120°C (248°F) and engine idling
VTA–E2 : 0.3–0.8 volts with the ignition SW on and the throttle valve fully closed
3.2–4.9 volts with the ignition SW on and the throttle valve fully open
VC–E2 : 4.5–5.5 volts with the ignition SW on
ODMS–E1 : 9.0–14.0 volts with the ignition SW on
0–3.0 volts with the ignition SW on and press continuously the O/D main SW
+B–E1 : 9.0–14.0 volts with the ignition SW on
ODLP–E1 : Approx. 12 volts with the ignition SW on and the O/D main SW turned off
A2 A/T Shift Lever Position SW
3–2 : Closed with the shift lever in R position
3–4 : Closed with the shift lever in 2 position
3–8 : Closed with the shift lever in L position
145
2004 COROLLA (EWD533U)
Electronically Controlled Transmission
: Parts Location
Code
See Page
Code
A2
32
E3
A10
34
C9
34
C14
34
D1
34
E1
32
J2
E2
32
J3
See Page
Code
See Page
A
34
J4
E4
B
34
J5
E5
C
34
J7
35
E6
D
34
S1
33
35
S9
35
A
35
T1
33
B
35
V1
33
I10
A
35
B
35
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
See Page
IC
25
IG
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IK
IL
Junction Block and Wire Harness (Connector Location)
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
24
IM
1A
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
28
Instrument Panel Wire and RH J/B ((Right
g Side of the Instrument Panel Reinforcement))
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
3A
3B
3C
4B
4C
: Connector Joining Wire Harness and Wire Harness
Code
EA1
See Page
Joining Wire Harness and Wire Harness (Connector Location)
38
Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
40
Engine
g
Room Main Wire and Instrument Panel Wire ((Left Side of the Instrument Panel Reinforcement))
42
Engine Wire and Instrument Panel Wire (Blower Unit RH)
IA2
IA4
IA6
II1
II2
: Ground Points
Code
EB
See Page
Ground Points Location
38
Left Side of the Cylinder Head
ED
38
Front Left Suspension Tower
IG
40
Right Kick Panel
EC
: Splice Points
Code
I2
See Page
42
Wire Harness with Splice Points
Code
Instrument Panel Wire
146
2004 COROLLA (EWD533U)
See Page
Wire Harness with Splice Points
Memo
147
2004 COROLLA (EWD533U)
Cruise Control
From Power Source System (See Page 48)
1
15A
DOME
10A
GAUGE
2
1
2 IG
5
IA5
19 3B
B
R–W
R–W
22 3B
L–W
ST2
(M/T)
B–W
(M/T)
1
I10
Ignition SW
7 IC
R–W
6 1M
C13
Cruise Control
Clutch SW
IG2 6
R–W
5 AM2
16
3B
2
19 4C
8 IK
14
3 1M
L–W
R–W
B–O
B–R
4
32
L
(M/T)
(A/T)
B
5
14
II2
R–W
IL
IA5
J4
Junction
Connector
L
5
B
(M/T)
20 4C
(A/T)
L–W
15A
AM2
R–W
20 3B
B–W
4 IL
Speedometer
A2
A/T Shift
Lever
Position SW
23
4
19 3C
(A/T)
L
10
1 1A
7
17 3C
V–W
1
3
II1
20 3C
G–R
30A
MAIN
C9
Combination Meter
2
L
D
CRUISE
1
(A/T)
B–R
R–W
2 IA4
B
L
8 4C
(A/T)
FL MAIN
2. 0L
7 4C
V–W
G–R
V–W
Battery
148
2004 COROLLA (EWD533U)
From Power Source System (See Page 48)
From Power Source System (See Page 48)
E 4(B), E 5(C), E 6(D)
Engine Control Module
D1
Data Link
Connector 3
10A
ECU–IG
15A
STOP
S2
L
9 IF
* 1 : A/T
13
14 IC
P–B
J 2(A), J 3(B)
Junction
Connector
(*1)
3 4C
L
B B
3
(* 1)
5 3B
R–Y
D A
L–W
B–W
TC
14 B
II1
IA5
STP–
3
4 IA5
13
IA5
R–W
3
2
4
1
R–L
R–G
L
2
CCS
GND
16
W–B
L
8
G–O
12
MO
15
G–W
MC
7
TC
S9
Stop Light SW
CCS
10
ECT
R–L
V–W
6
OD
11
G–Y
12
G–R
SPD
5
L
PI
4
14
G–O
IDL
(*1)
L
13
+B
R–G
C14
Cruise Control ECU
2
P–B
2 4C
B–W
6 3B
D
R–W
OD1
18 C
(* 1)
IDLO
16 D
12 3C
13 3C
R–Y
G–W
CRUISE
2
1
3
MC
MO
1 IL
L
G–W
RES/ACC
SET/COAST
5 IL
W–B
M
CANCEL
14 4B
ECC
C4
Cruise Control Actuator
4
W–B
W–B
G–R
3
13 4B
12 4B
21 4B
IA5
W–B
C10
Combination SW
W–B
3
GND
W–B
J6
Junction
Connector
V–W
A
IE
149
2004 COROLLA (EWD533U)
Cruise Control
System Outline
The current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.
With the ignition SW turned to on, the current flows through the MAIN fuse to AM2 fuse to ignition SW (IG2) to TERMINAL 32
of the combination meter and the current through the ECU–IG fuse flows to TERMINAL 2 of the cruise control ECU.
When the ignition SW is on and the CRUISE SW is turned on, a signal is input from TERMINAL 2 of the cruise control SW to
TERMINAL 1 of the cruise control ECU. As a result, the cruise control ECU functions and the current flows from the ECU–IG
fuse to TERMINAL 2 of the cruise control ECU to TERMINAL 16 of the cruise control ECU to GROUND, and the cruise
control system is in a condition ready for operation.
At the same time, the current flows through the MAIN fuse to AM2 fuse to ignition SW (IG2) to TERMINAL 32 of the cruise
indicator light to TERMINAL 23 to TERMINAL 5 of the cruise control ECU to TERMINAL 16 to GROUND, causing the cruise
indicator light to light up, indicating that cruise control is ready for operation.
1. Set Operation
When the CRUISE SW is turned on and the SET SW is pushed with the vehicle speed within the set limit (Approx. 40 km/h,
25 mph to 200 km/h, 124 mph), a signal is input to TERMINAL 11 of the cruise control ECU, and the vehicle speed at the
time the SET SW is released is memorized in the ECU as the set speed.
2. Set Speed Control
During cruise control driving, the ECU compares the set speed memorized in the ECU with the actual vehicle speed input
into TERMINAL 12 of the cruise control ECU from the combination meter, and controls the cruise control actuator to maintain
the set speed.
When the actual speed is lower than the set speed, the ECU causes the current to the cruise control actuator to flow from
TERMINAL 15 of the cruise control ECU to TERMINAL 1 of the cruise control actuator to TERMINAL 2 to TERMINAL 7 of
the cruise control ECU. As a result, the motor in the cruise control actuator is rotated to open the throttle valve and the
throttle cable is pulled to increase the vehicle speed. When the actual driving speed is higher than the set speed, the current
to the cruise control actuator flows from TERMINAL 7 of the ECU to TERMINAL 2 of the cruise control actuator to
TERMINAL 1 to TERMINAL 15 of the cruise control ECU.
This causes the motor in the cruise control actuator to rotate to close the throttle valve and return the throttle cable to
decrease the vehicle speed.
3. Coast Control
During cruise control driving, while the COAST SW is on, the cruise control actuator returns the throttle cable to close the
throttle valve and decrease the driving speed. The vehicle speed when the COAST SW is turned off is memorized, and the
vehicle continues at the new set speed.
4. Accel Control
During cruise control driving, while the ACC SW is turned on, the cruise control actuator pulls the throttle cable to open the
throttle valve and increase the driving speed.
The vehicle speed when the ACC SW is turned off is memorized and the vehicle continues at the new set speed.
5. Resume Control
Unless the vehicle speed falls below the minimum speed limit (Approx. 40km/h, 25mph) after canceling the set speed by the
CANCEL SW, pushing the RES SW will cause the vehicle to resume the speed set before cancellation.
6. Manual Cancel Mechanism
If any of the following operations occurs during cruise control operation, the magnetic clutch of the actuator turns off and the
motor rotates to close the throttle valve and the cruise control is released.
∗ Placing the shift lever to positions except ”D” position (Park/Neutral position SW except ”D” position)(A/T), depressing the
clutch pedal (Cruise control clutch SW off)(M/T). ”Signal is not input to TERMINAL 4 of the ECU”
∗ Depressing the brake pedal (Stop light SW on). ”Signal input to TERMINAL 3 of the ECU”
∗ Pushing the CANCEL SW (CANCEL SW on). ”Signal input to TERMINAL 1 of the ECU”
∗ Pushing the CRUISE SW off ”signal input to TERMINAL 1 of the ECU”.
7. Tap–Up Control Function
When the difference between the actual vehicle speed and the set speed is less than 5 km/h (3 mph), the set speed can be
increased 1.6 km/h (1 mph) each time by operating the RES/ACC SW quickly within 0.6 seconds.
8. Tap–Down Control Function
When the difference between the actual vehicle speed and the set speed is less than 5 km/h (3 mph), the set speed can be
lowered 1.6 km/h (1 mph) each time by operating the SET COAST SW quickly within 0.6 seconds.
150
2004 COROLLA (EWD533U)
9. Auto Cancel Function
A) If any of the following operating conditions occurs during cruise control operation, the set speed is erased, current flow to
the magnetic clutch is stopped and the cruise control is released, (CRUISE SW turns off).
When this occurs, the ignition SW must be turned off once before the CRUISE SW will turn on.
∗ When current continues to flow to the motor inside the actuator in the throttle valve ”OPEN” direction.
∗ The motor does not operate despite the motor drive signal being output.
B) If any of the following operating conditions occurs during cruise control operation, the set speed is erased, current flow to
the magnetic clutch is stopped and the cruise control is released. (CRUISE SW turn off).
When this occurs, the cancel state is cleared as the CRUISE SW will turn on again.
∗ Over current to transistor driving the motor or the magnetic clutch.
∗ Open circuit in the magnetic clutch.
∗ Momentary interruption of vehicle speed signal.
∗ Short circuit in the cruise control SW.
C) If any of the following conditions occurs during cruise control operation, the set speed is erased and the cruise control is
released. (The power to the magnetic clutch is cut off until the SET SW is ”ON” again.)
∗ When the vehicle speed falls below the minimum speed limit, approx. 40 km/h (25 mph)
∗ When power to the cruise control system is momentarily cut off.
10. Automatic Transaxle Control Function (A/T)
∗ In overdrive. If the vehicle speed becomes lower than the overdrive cut speed (Set speed minus approx. 4 km/h, 2.5 mph)
during cruise control operation, such as driving up a hill, the overdrive is released and the power is increased to prevent a
reduction in vehicle speed.
∗ After releasing the overdrive, if the vehicle speed becomes higher than the overdrive return speed (Set speed minus
approx. 2 km/h, 1.2 mph) and the ECU judges by the signals from the actuator’s potentiometer that the upward slope has
finished, the overdrive is resumed after approximately 2 seconds.
∗ During cruise control driving, the cruise control operation signal is output from the cruise control ECU to the engine control
module. Upon receiving this signal, the engine control module changes the shift pattern to normal.
To maintain smooth cruise control operation (on a downward slope etc.), the lock–up release of the transaxle when the
idling point of the throttle position is ”ON” is forbidden.
Service Hints
C10 Combination SW
2–3 : Continuity with the CRUISE SW on
2–3 : Approx. 1540 Ω with the CANCEL SW on
Approx. 240 Ω with the RES/ACC SW on
Approx. 630 Ω with the SET/COAST SW on
C14 Cruise Control ECU
2–Ground : 12 volts with the ignition SW at ON position
1–Ground : Approx. 1540 Ω with the CANCEL SW on in the control SW
Approx. 630 Ω with the SET/COAST SW on in the control SW
Approx. 240 Ω with the RES/ACC SW on in the control SW
16–Ground : Always continuity
: Parts Location
Code
See Page
Code
See Page
D1
34
Code
A2
32
C4
32
E4
B
34
J4
35
C9
34
E5
C
34
J6
35
C10
34
E6
D
34
S9
35
C13
34
C14
34
I10
J2
J3
See Page
B
35
35
A
35
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
151
2004 COROLLA (EWD533U)
Cruise Control
: Junction Block and Wire Harness Connector
Code
IC
IF
IG
See Page
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
25
IK
IL
Junction Block and Wire Harness (Connector Location)
Instrument Panel Wire and Instrument Panel J/B (Lower
(
Finish Panel))
24
IM
1A
3B
3C
4B
4C
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code
IA4
IA5
II1
II2
See Page
Joining Wire Harness and Wire Harness (Connector Location)
40
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
42
Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code
IE
See Page
40
Ground Points Location
Behind the Combination Meter
152
2004 COROLLA (EWD533U)
Memo
153
2004 COROLLA (EWD533U)
ABS
From Power Source System (See Page 48)
1
10A
GAUGE
ACC
5 AM2
IG2 6
15A
DOME
B–W
2
ST2
1
I10
Ignition SW
L–W
R–W
B
2 IG
6 IM
22 3B
7 IC
15A
AM2
16 3B
4 IL
L–W
B–W
3 IM
B–R
20 4C
R–W
5 IL
2 IA4
19 4C
L–W
4
B–O
B–R
8 IK
32
5
1
ABS
Brake
30A
MAIN
1
35
W–B
2
Speedometer
R–W
1 1A
R–W
B
17 IA5
FL
MAIN
2. 0L
37
36
C9
Combination Meter
2
9
18 4B
21 4B
R
1
W–B
W–R
2
W–B
B2
Brake Fluid Level
Warning SW
W–G
A
Battery
ED
J6
Junction
Connector
IE
154
2004 COROLLA (EWD533U)
From Power Source System (See Page 48)
30A
ABS
NO. 1
15A
STOP
D1
Data Link Connector 3
40A
ABS
NO. 2
2
TS
2
TC
3 4C
2 3B
1 4C
1 3B
1
PKB
11
GR
R–W
1
BRK
10
7
L–R
14 IC
R–W
13 IC
SIL
13
P–B
12
P3
Parking Brake SW
10A
ECU–IG
D2
Daytime Running Light
Relay
1
R–B
1
1
L–R
P–B
L
B–W
S9
Stop
Light SW
R
2
R–W
12
D/G
27
28
14 IA6
16 IA5
RL+
RL–
RR+
RR–
7
6
5
4
2 IB1
3
IB1
R
IB1
B
1 BC1
1 BD1
4
IB1
1
1
1
B
2
1
2 BD1
W
2 BC1
W
A20
ABS Speed Sensor
Rear RH
2
A19
ABS Speed Sensor
Rear LH
2
A4
ABS Speed Sensor
Front RH
2
A3
ABS Speed Sensor
Front LH
W–B
W–G
B
E1
W
IA6
Y
5
1
W
26
R
13
PKB
B
1
W
FR–
23
B
FR+
30
G
FL–
19
R
FL+
17
W–B
GND1
11
TC
W–B
GND2
8
TS
W–R
WA
10
R
BRL
+BM
S1
Skid Control ECU
with Actuator
Y
24
+BS
W–G
SP1
2
STP
L–R
16
IG1
IA6
IA5
12 IA6
P–B
3
4
15
11 IA6
GR
G–W
1
R
W–R
EA
155
2004 COROLLA (EWD533U)
ABS
System Outline
ABS is a brake system designed to improve the operating ability and securing the stability of the vehicle by preventing the
lock–up of the vehicle by controlling the wheel cylinder pressure of all the four wheels at the time of sudden braking.
1. Input Signals
(1) Speed sensor signal
The speed of the wheels is detected and input to TERMINALS FL+, FR+, RL+, and RR+ of the skid control ECU and
actuator.
(2) Stop light SW signal
A signal is input to TERMINAL STP of the skid control ECU with actuator when brake pedal is depressed.
2. System Operation
When the wheels are locked–up, the solenoid inside the actuator is controlled by the signal from the skid control ECU with
actuator, and the brake fluid in the wheel cylinder will flow through the reservoir and reduce the hydraulic pressure.
While the ABS is in operation, as the skid control ECU with actuator always outputs the operation signal to the pump inside
the actuator, and the brake fluid stored inside the reservoir will be sucked up by the pump inside the actuator and returned to
the master cylinder.
When the hydraulic pressure of the wheel cylinder is decompressed or increased until the necessary hydraulic pressure, the
solenoid inside the actuator is controlled by the control signal from the skid control ECU with actuator and as a result,
hydraulic pressure of the wheel cylinder will be closed at both the master cylinder and reservoir sides routes, and the
hydraulic pressure of the wheel cylinder will be in the hold condition.
If increase of the hydraulic pressure volume of the wheel cylinder becomes necessary, the control signals from the skid
control ECU with actuator control the solenoid inside the actuator, to resume to the normal condition. Thus the brake fluid of
the master cylinder will be sent to the wheel cylinder and will increase the hydraulic pressure of the wheel cylinder. At this
time, in the case that the brake fluid is left in the reservoir, it will be sucked up by the pump inside the actuator and will be
sent to the wheel cylinder.
Service Hints
A3, A4 ABS Speed Sensor Front LH, RH
2–1 : 0.92 –1.22 kΩ (25°C, 77°F)
A19, A20 ABS Speed Sensor Rear LH, RH
1–2 : 1.0 –1.4 kΩ (25°C, 77°F)
S1 Skid Control ECU with Actuator
23, 1–Ground : Always continuity
3–Ground : Approx. 12 volts with the ignition SW at ON position
16–Ground : Approx. 12 volts with the brake pedal depressed
2, 24–Ground : Always approx. 12 volts
: Parts Location
Code
See Page
Code
See Page
Code
See Page
A3
32
C9
34
P3
35
A4
32
D1
34
S1
33
A19
36
D2
34
S9
35
A20
36
I10
35
B2
32
J6
35
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
156
2004 COROLLA (EWD533U)
: Junction Block and Wire Harness Connector
Code
See Page
IC
25
IG
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IK
IL
Junction Block and Wire Harness (Connector Location)
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
24
IM
1A
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
3B
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4B
4C
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
IA4
IA5
40
Engine
g
Room Main Wire and Instrument Panel Wire ((Left Side of the Instrument Panel Reinforcement))
IA6
IB1
40
Engine Room Main Wire and Floor Wire (Cowl Side Panel LH)
BC1
44
Skid Control Sensor Wire LH and Floor Wire (Quarter Wheel House LH)
BD1
44
Skid Control Sensor Wire RH and Floor Wire (Quarter Wheel House RH)
: Ground Points
Code
See Page
Ground Points Location
EA
38
Front Right Fender
ED
38
Front Left Suspension Tower
IE
40
Behind the Combination Meter
: Splice Points
Code
E1
See Page
38
Wire Harness with Splice Points
Code
See Page
Wire Harness with Splice Points
Engine Room Main Wire
157
2004 COROLLA (EWD533U)
Memo
158
2004 COROLLA (EWD533U)
SRS
NOTICE: When inspecting or repairing the SRS, perform the operation in accordance with the following precautionary
instructions and the procedure and precautions in the Repair Manual for the applicable model year.
Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of information
when troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery.
Work must be started after 90 seconds from when the ignition switch is turned to the ”LOCK” position and the
negative (–) terminal cable is disconnected from the battery.
(The SRS is equipped with a back–up power source so that if work is started within 90 seconds from
disconnecting the negative (–) terminal cable of the battery, the SRS may be deployed.)
When the negative (–) terminal cable is disconnected from the battery, the memory of the clock and audio system will be
canceled. So before starting work, make a record of the contents memorized in the audio memory system. When work is
finished, reset the audio systems as they were before and adjust the clock. This vehicle has power tilt and power
telescopic steering, power seat and power outside rear view mirror which are all equipped with memory function.
However, it is not possible to make a record of the memory contents. So when the work is finished, it will be necessary
to explain this fact tot the customer, and ask the customer to adjust the features and reset the memory. To avoid erasing
the memory in each memory system, never use a back–up power supply from outside the vehicle.
Before repairs, remove the airbag sensor if shocks are likely to be applied to the sensor during repairs.
Do not expose the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner,
airbag sensor assembly, front airbag sensor assembly or side airbag sensor assembly directly to hot air or flames.
Even in cases of a minor collision where the SRS does not deploy, the steering wheel pad, front passenger airbag
assembly, side airbag assembly, seat belt pretensioner, airbag sensor assembly, front airbag sensor assembly and side
airbag sensor assembly should be inspected.
Never use SRS parts from another vehicle. When replacing parts, replace them with new parts.
Never disassemble and repair the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt
pretensioner, airbag sensor assembly, front airbag sensor assembly or side airbag sensor assembly in order to reuse it.
If the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner, airbag sensor
assembly, front airbag sensor assembly or side airbag sensor assembly has been dropped, or if there are cracks, dents
or other defects in the case, bracket or connector, replace them with new ones.
Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting the system’s electrical circuits.
Information labels are attached to the periphery of the SRS components. Follow the instructions on the notices.
After work on the SRS is completed, perform the SRS warning light check.
If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the Repair
Manual.
159
2004 COROLLA (EWD533U)
SRS
5 AM2
IG2 6
B–W
B–W
ST2
L–W
G–Y
B
I10
Ignition SW
6 IM
15A
AM2
2
B
G–Y
B
L–W
B–R
3 IM
8 C
IA4
A12(A), A13(B), A14(C)
Airbag Sensor Assembly
B–R
RBE+
I6
LSP+
3 IG1
LSP–
LBE+
1 IG1
3 A
4 A
11 A
B
B
G–Y
G–W
R–B
G
3
2
4
3
4
5
2
Occupant
Detection
Sensor
Buckle SW
30A
MAIN
1
VS
GND
Seat Position
Sensor
Buckle SW
2
L–W
1
1 1A
1
2 IG1
W–B
4 IG1
1
W–B
FL MAIN
2. 0L
B6
Buckle SW LH
Seat Position Sensor
W–B
W–B
B
B7
Buckle SW RH
Occupant
Detection Sensor
14 3A
15 3A
11 3A
W–B
Battery
A
J7
Junction
Connector
IG
160
2004 COROLLA (EWD533U)
* 1 : w/ Side Airbag
B–W
B–W
L–W
L–W
G–Y
G–Y
6 A
SFL+
5 A
SFL–
1 C
SFR+
SFR–
ESL
9 A
SSL–
10 A
FSL
7 A
VUPL
7 C
ESR
10 C
SSR–
9 C
FSR
P
LG
VUPR
4
(* 1)
(* 1)
L–Y
(* 1)
12 A
GR
3
(* 1)
FSR
2
(* 1)
SSR–
1
P–L
ESR
4
(* 1)
VUPL
3
LG–B
FSL
2
(* 1)
SSL–
L–W
ESL
1
GR–L
(* 1)
2 C
S11
Side Airbag Sensor RH
(* 1)
S10
Side Airbag Sensor LH
2
(* 1)
Y–R
1
(* 1)
Y–G
2
(* 1)
Y–R
1
S7
Side Airbag
Squib RH
Y–G
S6
Side Airbag
Squib LH
12 C
VUPR
16 B
17 B
10 B
11 B
8 B
7 B
1
2
1
2
1
D+
P12
Pretensioner LH
P13
Pretensioner RH
D–
D2+
D2–
2
4
3
1
D2+
D2–
D–
A16
Airbag Squib
(Steering Wheel Pad)
P+
P2+
P2–
Y–P
13 B
Y–GR
D+
Y–G
14 B
Y–B
PR–
Y–R
6 C
Y
PR+
Y–G
5 C
Y–B
PL–
Y–V
P–
1 A
Y
PL+
Y
P+
2 A
Y–B
A12(A), A13(B), A14(C)
Airbag Sensor Assembly
2
3
4
P2+
P2–
P–
A15
Airbag Squib
(Front Passenger Airbag Assembly)
161
2004 COROLLA (EWD533U)
SRS
From Power Source System (See Page 48)
1
B–W
10A
GAUGE
L–W
G–Y
15A
DOME
2
2 IG
R–W
+SL
–SL
2
+SR
1
1
L–W
A6
Airbag Sensor Front RH
B–W
A5
Airbag Sensor Front LH
7 IC
–SR
2
1
IA1
2
II
8 IK
L–W
8
3
L–W
1 IA1
22 3B
G–Y
B–W
4 IA1
4 IL
BR–W
BR
W–R
5 IL
16 3B
IA1
R–W
B–O
B–O
BR–W
B–W
BR
W–R
20 4C
26 B
+SL
9 B
–SL
20 B
+SR
5 B
–SR
L–W
15 B
IG2
A12(A), A13(B), A14(C)
Airbag Sensor Assembly
II
3
Y
11
4
12 B
3 B
B–Y
19 B
12
LA
II
7
II
1
II
2
II
5
II
4 IF
6
IJ
4
IJ
5
IJ
1
IJ
SRS
10
23 B
SIL
L–R
27 B
TC
P–B
28 B
32
GSW2
W–B
E1
W–B
E2
B–Y
15 4C
3 4C
2 3B
13 4C
P–B
L–R
B–Y
13
7
11
W–B
L–R
4 3B
B–Y
P–B
5 4C
14 4C
18 4B
F/PS
TC
SIL
A/B
W–B
14
21 4B
D1
Data Link Connector 3
A
A
J7
Junction
Connector
IG
C9
Combination Meter
2
Y
E6
Engine Control Module
W–B
W–B
39
10 IH
19 4C
W–B
J6
Junction
Connector
A
IE
162
2004 COROLLA (EWD533U)
5
System Outline
The SRS is a driver and front passenger protection device which has a supplemental role to the seat belts.
When the ignition SW is turned to ON, current from the MAIN fuse flows to AM2 fuse to ignition SW (IG2) to TERMINAL (B) 5
of the airbag sensor assembly.
If an accident occurs while driving, when the frontal impact exceeds a set level, the current from the TERMINAL (B) 5 of the
airbag sensor assembly flows to TERMINALS (B) 14, (B) 16, (B) 10, (B) 8, (A) 2 and (C) 5 of the airbag sensor assembly to
the airbag squibs and the pretensioners to TERMINALS (B) 13, (B) 17, (B) 11, (B) 7, (A) 1 and (C) 6 of the airbag sensor
assembly to TERMINAL (B) 20, (B) 27 or BODY GROUND to GROUND, so that the current flows to the front airbag squibs
and the pretensioners, and causes them to operate.
When the side impact also exceeds a set level, the current from the TERMINAL (B) 5 of the airbag sensor assembly flows to
TERMINALS (A) 6 and (C) 1 of the airbag sensor assembly to the side airbag squibs to TERMINALS (A) 5 and (C) 2 of the
airbag sensor assembly to TERMINAL (B) 20, (B) 27 or BODY GROUND to GROUND, causing side airbag squibs to
operate.
The airbag stored inside the steering wheel pad is instantaneously expanded to soften the shock to the driver.
The airbag stored inside the passenger’s instrument panel is instantaneously expanded to soften the shock to the front
passenger.
Side airbags are instantaneously expanded to soften the shock of side to the driver and front passenger.
The pretensioners make sure of the seat belt restrainability.
: Parts Location
Code
See Page
Code
See Page
Code
See Page
A5
32
B6
34
J7
35
A6
32
B7
34
P12
37
A12
A
34
C9
34
P13
37
A13
B
34
D1
34
S6
35
A14
C
34
E6
34
S7
35
A15
34
I10
35
S10
37
A16
34
J6
35
S11
37
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
IC
See Page
25
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IF
IG
IH
25
II
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IJ
IK
IL
24
IM
1A
3A
3B
4B
4C
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code
IA1
IA4
IG1
See Page
Joining Wire Harness and Wire Harness (Connector Location)
40
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
42
Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever)
163
2004 COROLLA (EWD533U)
SRS
: Ground Points
Code
See Page
Ground Points Location
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
: Splice Points
Code
I6
See Page
42
Wire Harness with Splice Points
Code
Instrument Panel No.3 Wire
164
2004 COROLLA (EWD533U)
See Page
Wire Harness with Splice Points
Memo
165
2004 COROLLA (EWD533U)
Shift Lock
From Power Source System (See Page 48)
10A
ECU–IG
15A
STOP
14 IC
R–W
9 IF
2
B–W
S9
Stop
Light SW
G–W
1
5 IC
7 3B
1 IL
G–W
5 3B
B–W
13 3C
10 3C
G–W
W–B
1
5
3
E
IG
STP
16 3A
11 3A
W–B
SLS+
A
SLS–
Shift Lock
Solenoid
J7
Junction
Connector
S5
Shift Lock Control ECU
IG
166
2004 COROLLA (EWD533U)
System Outline
When the ignition SW is turned to ON position, the current from the ECU–IG fuse flows to TERMINAL 5 of the shift lock
control ECU.
Shift Lock Mechanism
With the ignition SW at ON position, when a signal that the brake pedal is depressed (Stop light SW on) and a signal that the
shift lever is put in P position is input to the ECU, the ECU operates and the current flows from TERMINAL 5 of the ECU to
TERMINAL SLS+ of the shift lock solenoid to TERMINAL SLS– to TERMINAL 1 of the ECU to GROUND. This causes the
shift lock solenoid to turn on (Plate stopper disengages) and the shift lever can shift into position other than P.
Service Hints
S5 Shift Lock Control ECU
5–Ground : Approx. 12 volts with the ignition SW at ON position
1–Ground : Always continuity
3–Ground : Approx. 12 volts with the brake pedal depressed
S9 Stop Light SW
2–1 : Closed with the brake pedal depressed
: Parts Location
Code
See Page
J7
35
Code
S5
See Page
35
Code
S9
See Page
35
: Junction Block and Wire Harness Connector
Code
See Page
IC
25
IF
25
IL
24
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3A
3B
28
Instrument Panel Wire and RH J/B ((Right
g Side of the Instrument Panel Reinforcement))
3C
: Ground Points
Code
IG
See Page
40
Ground Points Location
Right Kick Panel
167
2004 COROLLA (EWD533U)
Light Reminder Buzzer and Key Reminder Buzzer
From Power Source System (See Page 48)
*
*
*
*
1
1 : w/ Door Lock Control
2 : w/o Door Lock Control
3 : USA
4 : Canada
G–W
10A
GAUGE
15A
DOME
15A
TAIL
(*3)
G–W
(*3)
2
G–W
(* 3)
13
D2
Daytime Running
Light Relay
7 IC
3
(*3)
(* 4)
G–W
G–W
7 IH
Light
Control SW
22 3B
1
L–W
R–W
2 IG
15
T
OFF
Tail
TAIL
Head
1
3
3
TAIL
Relay
2
5
14
4 IL
C12
Combination SW
L–W
3
10
G
G–B
R–W
20 4C
(*4)
16 3B
(*3)
G
I4
(*3)
L–W
G
19 4C
4
5
18
C9
Combination Meter
Buzzer
17
2
16
L–B
W–B
R–W
(*1)
L–B
3
(* 2)
14 4A
IL
15 4A
L–B
18 4B
(*1)
2
1 ID
R–W
U1
Unlock
Warning SW
21 4B
1
W–B
W–B
1
D4
Door Courtesy SW
Front LH
A
A
J6
Junction
Connector
IE
168
2004 COROLLA (EWD533U)
3
System Outline
The current is applied at all times to TERMINAL 5 of the combination meter through the DOME fuse.
When the ignition SW is turned to ON position, the current flows to TERMINAL 4 of the combination meter through the
GAUGE fuse. When the light control SW is turned to Tail or Head position, current is applied to TERMINAL 18 of the
combination meter through the TAIL fuse via the TAIL relay (USA) or the light control SW (Canada).
1. Light Reminder System
When the light control SW is in Tail or Head position, the ignition SW turned to OFF from ON position, and the driver’s door
opened (Door courtesy SW on), the current flows to TERMINAL 4 of the combination meter stops. As a result, the
combination meter is activated and current flows from TERMINAL 5 of the combination meter to TERMINAL 2 to GROUND,
the buzzer in the combination meter goes on to remind the light is lighting up.
2. Key Reminder System
When the driver door is opened with the ignition SW off and ignition key remaining in the key cylinder (Unlock warning SW
on), a signal is input from the unlock warning SW to TERMINAL 16 of the combination meter, and from the door courtesy SW
front LH to TERMINAL 17 of the combination meter. As a result, the buzzer in the combination meter goes on and warns the
driver that the key is remaining in the key cylinder.
Service Hints
C9 Combination Meter
4–Ground : Approx. 12 volts with the ignition SW at ON position
18–Ground : Approx. 12 volts with the light control SW at Tail or Head position
17–Ground : Continuity with the driver’s door open
2–Ground : Always continuity
D4 Door Courtesy SW Front LH
1–Ground : Closed with the driver’s door open
U1 Unlock Warning SW
2–1 : Closed with the ignition key in cylinder
: Parts Location
Code
See Page
Code
See Page
Code
See Page
C9
34
D2
34
J6
35
C12
34
D4
36
U1
35
: Relay Blocks
Code
See Page
Relay Blocks (Relay Block Location)
1
22
Engine Room R/B (Engine Compartment Left)
3
28
RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code
See Page
Junction Block and Wire Harness (Connector Location)
IC
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID
25
Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IG
IH
25
Instrument Panel Wire and Instrument Panel J/B (Lower
(
Finish Panel))
IL
24
3B
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
30
Instrument Panel Wire and Center J/B (Behind
(
the Combination Meter))
4A
4B
4C
: Ground Points
Code
IE
See Page
40
Ground Points Location
Behind the Combination Meter
169
2004 COROLLA (EWD533U)
Light Reminder Buzzer and Key Reminder Buzzer
: Splice Points
Code
I4
See Page
42
Wire Harness with Splice Points
Code
Instrument Panel Wire
170
2004 COROLLA (EWD533U)
See Page
Wire Harness with Splice Points
Memo
171
2004 COROLLA (EWD533U)
Seat Belt Warning
From Power Source System (See Page 48)
1
10A
GAUGE
15A
DOME
2
L–W
7 IC
11 3B
16 3B
4 IL
L–W
R–W
22 3B
R–W
1
R–W
2 IG
1
F7
Front Passenger
Seat Belt
Warning Light
4
5
L
3
L–W
19 4C
R–W
PASSENGER
20 4C
C9
Combination Meter
Seat
Belt
18 4B
3 IG1
1 IG1
B6
Buckle SW LH
15 3A
14 3A
11 3A
W–B
W–B
2 IG1
A
A
IE
W–B
4 IG1
W–B
J6
Junction
Connector
C
BR
W–B
1
C
W–B
BR
1
3
II2
BR
G–Y
4
Buckle SW
2
Occupant
Detection
Sensor
3
5
W–B
21 4B
B7
Buckle SW RH
Occupant Detection Sensor
L–W
B
1
BR
12
G–Y
11
L–W
2
BR
6
IG
172
2004 COROLLA (EWD533U)
J7
Junction
Connector
EB
J3
Junction
Connector
System Outline
Current is always applied from the DOME fuse to TERMINAL 5 of the combination meter. When the ignition SW is turned to
ON position, the current from the GAUGE fuse flows to TERMINAL 4 of the combination meter and flows TERMINAL 1 of the
front passenger seat belt warning light.
Seat Belt Warning System
When the ignition SW turned on, a signal is input to the combination meter. To determine whether the driver has fastened the
seat belt, a signal is input from the buckle SW LH to TERMINAL 12 of the combination meter. When the seat belt is not
fastened, the seat belt warning light in the combination meter blinks, and emits a warning sound.
In addition, the front passenger is recognized by a sensor (Occupant detection sensor) is installed in the front passenger
seat, and determines whether the seat belt is fastened. When not fastened, the signals from the occupant detection sensor
is input to TERMINAL 11 of the combination meter, and the front passenger seat belt warning light blinks.
Service Hints
B6 Buckle SW LH
3–1 : Open with the driver’s seat belt in use
C9 Combination Meter
5–Ground : Always approx. 12 volts
4–Ground : Approx. 12 volts with the ignition SW at ON position
1–Ground : Always continuity
: Parts Location
Code
See Page
Code
See Page
B6
34
F7
35
B7
34
J3
35
C9
34
J6
35
Code
J7
See Page
35
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
See Page
IC
25
IG
25
IL
24
3A
3B
4B
4C
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
IG1
42
Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever)
II2
42
Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code
See Page
Ground Points Location
EB
38
Left Side of the Cylinder Head
IE
40
Behind the Combination Meter
IG
40
Right Kick Panel
173
2004 COROLLA (EWD533U)
Rear Window Defogger
From Power Source System (See Page 48)
1
10A
GAUGE
40A
DEFOG
2
R–W
2 IG
2
5
DEF
Relay
22 3B
1
3
10 IL
4 IM
14 3B
B
R–W
B
8 ID1
4
IG
D
E
R5
Rear Window Defogger SW
B
5
2
B
B
W–B
B5
1 A
1
R15(A), R16(B)
Rear Window
Defogger
B
1 B
IE
BJ
174
2004 COROLLA (EWD533U)
N2
Noise Filter
(Rear Window
Defogger)
Service Hints
DEF Relay
5–3 : Closed with the ignition SW at ON position and the rear window defogger SW on
: Parts Location
Code
See Page
Code
See Page
N2
37
R15
A
37
R5
35
R16
B
37
Code
See Page
: Junction Block and Wire Harness Connector
Code
IG
IL
IM
3B
See Page
Junction Block and Wire Harness (Connector Location)
25
Instrument Panel Wire and Instrument Panel J/B (Lower
(
Finish Panel))
24
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code
ID1
See Page
42
Joining Wire Harness and Wire Harness (Connector Location)
Instrument Panel Wire and Floor Wire (Left Kick Panel)
: Ground Points
Code
See Page
Ground Points Location
IE
40
Behind the Combination Meter
BJ
44
Under the Right Quarter Pillar
: Splice Points
Code
B5
See Page
44
Wire Harness with Splice Points
Code
See Page
Wire Harness with Splice Points
Floor Wire
175
2004 COROLLA (EWD533U)
Radio and Player
From Power Source System (See Page 48)
* 1 : w/ Tweeter
* 2 : w/o Tweeter
1
15A
DOME
2
L–W
1
7 IC
A17
Antenna Amplifier
L–W
20 4C
4 IL
17 4C
L–W
B
1
4 A
8 A
FL–
LG
L
IJ1
3
IJ1
L
4
BR
V
5 A
LG
V
3 IC2
(* 1)
FR–
1 A
4 IC2
P
FR+
6 A
P
2 A
(* 1)
FL+
7 A
(* 1)
GND
ANT+
(* 1)
+B
R 3(A), R 4(B)
Radio and Player
2
T4
Tweeter LH
1
2
T5
Tweeter RH
2
1
F8
Front Door
Speaker LH
2
F9
Front Door
Speaker RH
IF
176
2004 COROLLA (EWD533U)
L(* 2)
L(* 1)
1
L(* 1)
2 BF1
LG(*1)
LG(*1)
LG(*2)
V(*2)
L(* 1)
1
1 BF1
V(*1)
2 BE1
LG(*1)
P(*1)
P(*2)
1 BE1
From Power Source System (See Page 48)
15A
CIG
GR
8 IF
10 3A
GR
7 3A
R 3(A), R 4(B)
Radio and Player
3 A
ACC
RL+
RL–
RR+
RR–
W
1 ID1
5 ID1
1
2
R13
Rear Speaker LH
W
R
6 ID1
B
2 ID1
R
3 B
Y
1 B
Y
6 B
B
2 B
1
2
R14
Rear Speaker RH
177
2004 COROLLA (EWD533U)
Radio and Player
Service Hints
R3 (A) Radio and Player
(A) 4–Ground : Always approx. 12 volts
(A) 3–Ground : Approx. 12 volts with the ignition SW at ACC or ON position
(A) 7–Ground : Always continuity
: Parts Location
Code
See Page
Code
A17
34
R3
F8
36
R4
F9
36
See Page
Code
See Page
A
35
R14
37
B
35
T4
37
37
T5
37
R13
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
See Page
Junction Block and Wire Harness (Connector Location)
IC
25
IF
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IL
24
3A
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4C
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
IC2
40
Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
ID1
42
Instrument Panel Wire and Floor Wire (Left Kick Panel)
IJ1
42
Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
BE1
44
Speaker Tweeter LH Wire and Front Door LH Wire (Inside of the Front Door LH)
BF1
44
Speaker Tweeter RH Wire and Front Door RH Wire (Inside of the Front Door RH)
: Ground Points
Code
IF
See Page
40
Ground Points Location
Behind the Combination Meter
178
2004 COROLLA (EWD533U)
Memo
179
2004 COROLLA (EWD533U)
Combination Meter
B–W
B–W
5 AM2
From Power Source System (See Page 48)
IG2 6
1
ST2
10A
HEAD RH
UPR
B
4 IL
6 IM
I10
Ignition SW
2
2 IG
1
L–W
L–W
10A
GAUGE
R–W
22 3B
16 3B
R
R–W
R–W
20 4C
15A
AM2
6
IA6
7 IC
3 IM
B–R
20 3B
C9
Combination Meter
B–R
Speedometer
R–W
5
(w/o ABS)
14
2 IA4
L–W
L–W
R
19 4C
2
15A
DOME
1
30A
MAIN
B A
1
Door
II2
R–W
2
14
High Beam
1
(w/o ABS)
1
J 4(A), J 5(B)
Junction
Connector
C B
20
17
8
R
R–W
Y–R
Engine Control Module
Integration Relay
Door Courtesy SW Front LH
V1
Vehicle Speed Sensor
(Combination Meter)
W–B
1
Door Courtesy SW
Front RH, Rear LH, RH
R–W
FL MAIN
2. 0L
(w/o ABS)
B
13
W–B
1 1A
J6
Junction
Connector
Battery
2
A
A
3
W–G
W–B
BR
(w/o ABS)
IE
180
2004 COROLLA (EWD533U)
(w/o ABS)
W–B
(w/o ABS)
W–B
BR
BR
BR
14 IA6
2004 COROLLA (EWD533U)
C B
C B
C A
F10
Fuel Sender
II2
L–W
II2
13 ID2
Y
BR
G–Y
1
22
5
Y
5
BR
11
L–B
Fuel
Temp.
Fuel
Tachometer
Out Side Temp.
ODO/TRIP
J 2(A), J 3(B)
Junction Connector
12
BR
16
B
BR
19
BR
Buckle SW RH
4
I2
Buckle SW LH
W–G
Unlock Warning SW
W–G
9
Engine Control Module
W–G
(w/o ABS)
(w/ ABS)
V–W
C9
Combination Meter
(w/o ABS)
W–G
7 4C
V–W
8 4C
(w/ ABS)
9 4C
V–W
10
Skid Control
ECU with
Actuator
Cruise Control
ECU
Engine Control
Module
R–W
B–W
B–W
R–W
4
Buzzer
ODO/TRIP
7
ID2
2
3
W–G
(w/o ABS)
W–B
EB
181
2
182
2004 COROLLA (EWD533U)
1
21 4B
2
W–B
EA
3
23
LG
G–R
33
Cruise Control ECU
13
R–Y
34
Engine Control Module
31
(Canada)
CRUISE
O/D OFF
Malfunction
Indicator Lamp
G–Y
B–O
32
(Canada)
W1
Washer Level Sensor
Washer Level
Charge
G–B
25
(Canada)
18 4B
Turn RH
Turn LH
L
24
L–W
2
Y
Seat
Belt
6
L–W
IA6
Front Passenger Seat
Belt Warning Light
Turn Signal
Flasher Relay
Generator
30
W–B
B–L
B
26
W–B
1
B–L
3
A7
Ambient Temp. Sensor
B
Combination Meter
B–W
5 IL
8 IK
C9
Combination Meter
10 IA6
IA6
E1
EA
1
2
R–W
(w/o ABS)
J1
Junction
Connector
B
B2
Brake Fluid Level
Warning SW
15
(w/o ABS)
R–W
2004 COROLLA (EWD533U)
W
28
3
1
IA5
O1
Oil Pressure SW
R–W
W–R
R
B–Y
W–R
39
W
R–W
Rheostat
IA5
R–W
35
(w/ ABS)
36
R–W
R
(w/ ABS)
37
(w/o ABS)
W–B
(w/o ABS)
16
W–B
W–B
(w/o ABS)
IA6
Skid Control
ECU with
Actuator
(w/o ABS)
W–R
(w/ ABS)
5
W–B
Skid Control
ECU with
Actuator
SRS
Oil Pressure
Illumination
Brake
ABS
C9
Combination Meter
18
21
Airbag Sensor
Assembly
17 IA5
B
II2
(w/o ABS)
B
Daytime Running
Light Relay
ED
183
G
Combination SW (Canada)
TAIL Relay (USA)
Combination Meter
Service Hints
B2 Brake Fluid Level Warning SW
1–2 : Closed with the float down
C9 Combination Meter
4, 32–Ground : Approx. 12 volts with the ignition SW at ON position
1, 13, 36, 37–Ground : Always continuity
5–Ground : Always approx. 12 volts
F10 Fuel Sender
2–3 : Approx. 4 Ω at fuel full
Approx. 107 Ω at fuel empty
O1 Oil Pressure SW
1–Ground : Opened with the oil pressure above approx. 19.61 kpa (2.84 psi, 0.2 kgf/cm2)
: Parts Location
Code
See Page
A7
32
Code
See Page
J1
Code
See Page
33
J6
35
B2
32
J2
A
35
O1
33
C9
34
J3
B
35
V1
33
F10
36
J4
A
35
W1
33
I10
35
J5
B
35
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
See Page
IC
25
IG
25
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IK
IL
Junction Block and Wire Harness (Connector Location)
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
24
IM
1A
22
Engine Wire and Engine Room J/B (Engine Compartment Left)
3B
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4B
4C
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
IA4
IA5
40
Engine
g
Room Main Wire and Instrument Panel Wire ((Left Side of the Instrument Panel Reinforcement))
ID2
42
Instrument Panel Wire and Floor Wire (Left Kick Panel)
II2
42
Engine Wire and Instrument Panel Wire (Blower Unit RH)
IA6
: Ground Points
Code
See Page
Ground Points Location
EA
38
Front Right Fender
EB
38
Left Side of the Cylinder Head
ED
38
Front Left Suspension Tower
IE
40
Behind the Combination Meter
184
2004 COROLLA (EWD533U)
: Splice Points
Code
E1
See Page
38
Wire Harness with Splice Points
Engine Room Main Wire
Code
I2
See Page
42
Wire Harness with Splice Points
Instrument Panel Wire
185
2004 COROLLA (EWD533U)
Radiator Fan
From Power Source System (See Page 48)
1
30A
RDI
FAN
10A
ECU–IG
2
13 IC
B–W
1
B–W
B–W
1
W–R
1
5
1
1
1
FAN
NO. 1
Relay
3
3
4
FAN
NO. 2
Relay
2
2
5
1
1
1
1
L–W
W–B
IA5
LG–B
7
LG–B
B–R
LG
1
1
1
3
Single
CF
2
1
E6
Engine Control
Module
LG–B
6 IA5
6
W–B
LG–B
FAN
P2
Pressure
SW
W–B
W–R
7
2
R2
Radiator
Fan Resistor
R1
Radiator
Fan Motor
W–B
E4
EA
186
2004 COROLLA (EWD533U)
W–B
M
LG
2
ED
System Outline
The current is applied at all times through the RDI FAN fuse to TERMINAL 5 of the FAN NO.1 relay.
When the ignition SW is turned on, the current flows through the ECU–IG fuse to FAN NO.1 relay (Coil side) to TERMINAL 6
of the engine control module. At the same time as this current flow, the current from ECU–IG fuse flows to the FAN NO.2
relay (Coil side) to TERMINAL 3 of the pressure SW.
1. Low Speed Operation
When the A/C system is operating, the FAN NO.1 Relay is turned on. As a result, the current flows from the RDI FAN fuse to
FAN NO.1 relay (Point side) to TERMINAL 2 of the radiator fan motor to TERMINAL 1 to TERMINAL 3 of the FAN NO.2 relay
to TERMINAL 4 to TERMINAL 2 of the radiator fan resistor to TERMINAL 1 to GROUND, and the radiator fan motor rotates
at low speed.
2. High Speed Operation
When the pressure SW is on or engine control module operated, the FAN NO.1 and NO.2 relay is turned on. As a result, the
current flows from the RDI FAN fuse to FAN NO.1 relay (Point side) to radiator fan motor to TERMINAL 3 of the FAN NO.2
Relay to TERMINAL 5 to GROUND, and the radiator fan motor rotates at high speed.
Service Hints
P2 Pressure SW
3–2 : Open below approx. 12.5 kgf/cm2 (178 psi, 1225 kpa)
Close above approx. 15.5 kgf/cm2 (220 psi, 1520 kpa)
: Parts Location
Code
See Page
Code
See Page
E6
34
R1
33
P2
33
R2
33
Code
See Page
: Relay Blocks
Code
1
See Page
22
Relay Blocks (Relay Block Location)
Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code
IC
See Page
25
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code
IA5
See Page
40
Joining Wire Harness and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
: Ground Points
Code
See Page
Ground Points Location
EA
38
Front Right Fender
ED
38
Front Left Suspension Tower
: Splice Points
Code
E4
See Page
38
Wire Harness with Splice Points
Code
See Page
Wire Harness with Splice Points
Engine Room Main Wire
187
2004 COROLLA (EWD533U)
Air Conditioning
From Power Source System (See Page 48)
L–W
B
1
10A
GAUGE
40A
HEATER
B
B–W
2 IM
L–W
2
2 IG
3 IC
7 IF
R–W
10A
A/C
B
5 IM
R–W
22 3B
18 3B
12 3B
13 3B
R–W
R–W
R–W
B4
Blower Resistor
B–W
B
1
3
R
W–B
M
5
L–B
2
3
B–W
1
3
B3
Blower Motor
R–W
2
4
1 IH1
2 IH1
6 IH1
5 IH1
HTR Relay
2
3
3
I7
3
B–W
L–W
3
B–W
1
B–W
4
B
R
W–B
B
L–W
4
1
2
HI
M2
M1
LO
OFF
6
W–B
W–B
B5
Blower SW
W–B
5
A
A
A
A
IG
188
2004 COROLLA (EWD533U)
J7
Junction
Connector
W–B
L–W
L–W
B
L–W
A/C SW
A8
A/C SW
Air Inlet Control SW
Defroster Mode Detection SW
FRS
Air Inlet
Control SW
REC
Off
On
1
B/L
5
FOOT
1
1
M/G CLT
Relay
Defroster Mode
Detection SW
FACE
F/D
DEF
2
3
2
B
1
A/C
4
3
4 EA1
1
Y
33 C
31 C
7
IA6
Y–B
G–W
A11
Air Inlet Control
Servo Motor
FRS
REC
R–W
A1
A/C Magnetic Clutch
2
AIND
B–W
GND
8
W–B
REC
7
L–W
FRS
6
G–W
IG
9
1
Y–B
B–W
1
M
5
ACLD
2 C
A/CS
ACMG
PRS
THR
B–L
32 C
Y
W–B
13 A
8 EA1
4 IH1
E2
E 3(A), E 5(B)
Engine Control Module
28 A
BR
R–W
1
B
Y
J3
Junction
Connector
20 3A
F
F
BR
A/C Thermistor
Dual
P2
Pressure SW
11 3A
B
4
II2
W–B
1
W–B
3 IH1
BR
EA
189
2004 COROLLA (EWD533U)
Air Conditioning
System Outline
Current is applied at all times through the HEATER fuse to TERMINAL 5 of the HTR relay.
When the ignition SW is turned on, the current flows through the GAUGE fuse to TERMINAL 2 of the HTR relay to
TERMINAL 1 to TERMINAL 6 of the blower SW.
1. Heater Blower Motor Operation
∗ Low speed operation
When the blower SW is moved to LO position, the current flows to TERMINAL 6 of the blower SW to TERMINAL 5 to
GROUND, causing the HTR relay to turn on. This causes the current flows from the HEATER fuse to TERMINAL 5 of
the HTR relay to TERMINAL 3 to the blower motor to the blower resistor to GROUND, rotating the blower motor at low
speed.
∗ Medium speed operation (Operation at M1, M2)
When the blower SW is moved to M1 position, the current flows to TERMINAL 6 of the blower SW to TERMINAL 5 to
GROUND, causing the HTR relay to turn on. This causes the current flows from the HEATER fuse to TERMINAL 5 of
the HTR relay to TERMINAL 3 to the blower motor to the blower resistor to TERMINAL 2 of the blower SW to
TERMINAL 5 to GROUND. At this time, the blower resistance of the blower resistor is smaller than at low speed, so the
blower motor rotates at medium low speed.
When the blower SW is moved to M2 position, the current flows through the HTR relay to the blower motor to the blower
resistor to TERMINAL 1 of the blower SW to TERMINAL 5 to GROUND. At this time, resistance of the blower resistor is
smaller than at M1 position, so the blower motor rotates at medium high speed.
∗ High speed operation
When the blower SW is moved to HI position, the current flows to TERMINAL 6 of the blower SW to TERMINAL 5 to
GROUND, causing the HTR relay to turn on.
This causes the current flows from the HEATER fuse to TERMINAL 5 of the HTR relay to TERMINAL 3 to the blower
motor to TERMINAL 4 of the blower SW to TERMINAL 5 to GROUND, rotating the blower motor at high speed.
2. Air Conditioning Operation
When the blower SW is set on, the current flows from the HTR fuse to the HTR relay (Point side) to the A/C fuse to the
TERMINAL 2 of the A/C SW. If the A/C SW is turned on, at this time a signal is input into the engine control module. This
activates the engine control module and M/G CLT relay. So that current flows from the A/C fuse to M/G CLT relay (Point side)
to A/C magnetic clutch. Causing the compressor to operate.
Service Hints
HTR Relay
5–3 : Closed with the ignition SW at ON position and the blower SW on
P2 Pressure SW
1–4 : Open with the refrigerant pressure at less than approx. 2.0 kgf/cm2 (28.4 psi, 196.1 kpa) or more than
approx. 32.0 kgf/cm2 (455 psi, 3138.1 kpa)
: Parts Location
Code
See Page
Code
See Page
Code
A1
32
B3
34
A8
34
B4
34
J3
35
A9
34
B5
34
J7
35
A11
34
34
P2
33
E3
A
: Relay Blocks
Code
See Page
Relay Blocks (Relay Block Location)
1
22
Engine Room R/B (Engine Compartment Left)
3
28
RH R/B (Right Side of the Instrument Panel Reinforcement)
190
2004 COROLLA (EWD533U)
E5
See Page
B
34
: Junction Block and Wire Harness Connector
Code
IC
IF
IG
IM
3A
3B
See Page
25
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
25
Instrument Panel Wire and Instrument Panel J/B (Lower
(
Finish Panel))
24
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
EA1
38
Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA6
40
Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IH1
42
Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit)
II2
42
Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code
See Page
Ground Points Location
EA
38
Front Right Fender
IG
40
Right Kick Panel
: Splice Points
Code
I7
See Page
42
Wire Harness with Splice Points
Code
See Page
Wire Harness with Splice Points
Instrument Panel Wire
191
2004 COROLLA (EWD533U)
Heater
From Power Source System (See Page 48)
1
A8
Air Inlet Control SW
10A
GAUGE
40A
HEATER
FRS
Air Inlet
Control SW
REC
2 IM
B–W
R–W
2
1
GND
8
18 3B
12 3B
13 3B
M
R–W
R–W
B4
Blower Resistor
3
3
2 IH1
6 IH1
5 IH1
B–W
W–B
L–W
B–W
B
1 IH1
3
W–B
3
I7
L–W
4
W–B
3
2
B–W
2
1
3
W–B
HTR
Relay
1
R
M
4
L–B
1
5
B–W
2
B3
Blower Motor
B
3
5
R–W
B–W
A11
Air Inlet Control
Servo Motor
22 3B
FRS
REC
R–W
RSC
7
L–W
FRS
6
G–W
IG
9
W–B
2 IG
R–W
2
R
20 3A
4
1
2
HI
M2
M1
LO
OFF
11 3A
L–W
6
W–B
A
A
A
A
IG
192
2004 COROLLA (EWD533U)
W–B
W–B
B5
Blower SW
W–B
5
J7
Junction
Connector
Service Hints
HTR Relay
5–3 : Closed with the ignition SW at ON position and the blower SW on
: Parts Location
Code
See Page
Code
See Page
Code
See Page
A8
34
B3
34
B5
34
A11
34
B4
34
J7
35
: Relay Blocks
Code
3
See Page
28
Relay Blocks (Relay Block Location)
RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code
See Page
IG
25
IM
24
3A
3B
Junction Block and Wire Harness (Connector Location)
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code
IH1
See Page
42
Joining Wire Harness and Wire Harness (Connector Location)
Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit)
: Ground Points
Code
IG
See Page
40
Ground Points Location
Right Kick Panel
: Splice Points
Code
I7
See Page
42
Wire Harness with Splice Points
Code
See Page
Wire Harness with Splice Points
Instrument Panel Wire
193
2004 COROLLA (EWD533U)
I GROUND POINT
W–B
W–B
(–S)
1
FAN NO. 2 Relay
1
EFI Relay
Pressure SW
W–B
16
IA5
R
W–B
W–B
E1
W–B
E4
E1
W–B
(EBD)
W–B
W–B
E4
W–B
Front Parking Light
RH
Front Turn Signal
Light RH
E1
W–B
W–B
W–B
W–B
W–B
W–B
E1
W–B
Front Fog Light
LH
Headlight LH (High)
W–B
Brake Fluid Level
Warning SW
W–B
Radiator Fan
Resistor
W–B
Daytime Running
Light Relay
W–B
EA
ED
W–B
(E02)
(E01)
Engine Control
Module
(E1)
W–B
C
A
B
B
BR
A
A
A
B
Heated Oxygen Sensor
(Bank 1 Sensor 1)
BR
Heated Oxygen Sensor
(Bank 1 Sensor 2)
BR
W–B
Ignition Coil and
Igniter No. 2
W–B
Ignition Coil and
Igniter No. 3
W–B
Ignition Coil and
Igniter No. 4
W–B
8
II2
E2
E2
BR
A
A
BR
A
A
W–B
C
A
BR
W–B
EC
W–B
(SG)
Data Link
Connector 3
Idle Air Control
Valve
J 4(A), J 5(B)
Junction
Connector
5
II2
BR
A
A
BR
W–B
Ignition Coil and
Igniter No. 1
1
II1
BR
B
B
W–B
(E03)
W–B
(GND2)
W–B
E1
W–B
(GND1)
ABS Actuator
with ECU
W–B
3
IA4
E1
W–B
Washer Level Sensor
E4
W–B
E1
W–B
Front Wiper Motor
E4
W–B
E1
W–B
Headlight RH (High)
Front Parking Light
LH
Front Turn Signal
Light LH
W–B
E4
W–B
W–B
Front Fog Light RH
W–B
W–B
Combination
Meter
5
IA6
W–R
W–B
E4
W–B
(LP)
E1
W–B
(CUT–)
BR
(ET)
Combination
Meter
C
B
BR
EB
194
2004 COROLLA (EWD533U)
C
B
C
A
J 2(A), J 3(B)
Junction Connector
BR
Vehicle Speed Sensor
(Combination Meter)
I
W–B
W–B
Security
Indicator
P–POINT Relay
4
IG1
11
4B
12
3A
W–B
Shift Lock Control
ECU
O/D Main SW
15
3A
W–B
W–B
16
3A
W–B
17
3A
18
3A
W–B
Clock
20
3A
W–B
Air Inlet Control SW
21
3A
W–B
Hazard SW
Door Key Lock and
Unlock SW Front RH
Door Lock Motor
Front RH
Door Unlock Detection
SW Front RH
W–B
(USA)
12
4B
14
3A
W–B
13
4B
2
IG1
Glass Breakage
Sensor ECU
19
3A
W–B
W–B
Buckle SW LH
Seat Position Sensor
11 3A
W–B
W–B
3
IA5
14
4B
W–B
15
4B
W–B
16
4B
W–B
17
4B
W–B
18
4B
W–B
19
4B
W–B
22
4B
W–B
W–B
W–B
W–B
(T)
Combination SW
(ECC)
Combination SW
Cruise Control
Actuator
Cruise Control
ECU
(E)
Combination SW
(CG)
Data Link
Connector 3
Turn Signal
Flasher Relay
(EP)
Combination
Meter
Rheostat
Remote Control
Mirror SW
21 4B
A
W–B
5
IH1
W–B
A
(EC)
W–B
10
II2
W–B
A
W–B
Blower SW
HTR Relay
3
(L)
Moon Roof Control
Relay and SW
Personal Light
W–B
W–B
B3
W–B
A
W–B
A
J7
Junction
Connector
Blower Resistor
A
1
IJ2
W–B
Door Lock Control
SW Front RH
Engine Control
Module
W–B
W–B
I8
3
Buckle SW RH
Occupant
Detection Sensor
W–B
I8
W–B
TVIP ECU
W–B
A
W–B
A
W–B
W–B
W–B
10 IH
W–B
B
Inner Mirror
Personal Light
(E)
(E1)
Airbag Sensor
Assembly
(E2)
W–B
IG
B
4
IF
(*1 * 3)
W–B
B2
W–B
(E)
Moon Roof Motor
and Limit SW
P/W Relay
B1
W–B
(*1 * 2)
B2
W–B
(GND)
W–B
Integration Relay
1
IE
ST Relay
W–B
3
II
IG1 Relay
W–B
10
II
Noise Filter
W–B
B2
W–B
* 1 : w/ Automatic Glare–Resistant EC Mirror
* 2 : w/ Moon Roof
* 3 : w/o Moon Roof
195
2004 COROLLA (EWD533U)
I GROUND POINT
J 8(A), J 9(B)
Junction Connector
A
A
B
A
Rear Combination
Light LH
W–B
Rear Combination
Light RH
W–B
A
B
W–B
A
B
Door Control Receiver
Rear Combination
Light RH
W–B
High Mounted Stop
Light
A
A
W–B
License Plate Light
LH
A
A
W–B
License Plate Light
RH
A
A
W–B
Rear Combination
Light LH
W–B
W–B
W–B
W–B
BI
Radio and Player
Fuel Pump
BH
BR
B
Rear Window
Defogger
W–B
IF
(* 4)
BJ
W–B
6
IC1
A W–B
A
W–B
(* 5)
J6
Junction
Connector
W–B
(* 4)
B4
W–B
(* 5)
W–B
W–B
(* 5)
W–B
A
* 4 : w/ Power Window
* 5 : w/o Power Window
A
W–B
A
W–B
A
W–B
A
W–B
A
W–B
W–B
2
IF1
Door Key Lock and
Unlock SW Front LH
Door Lock Motor
Front LH
Door Unlock Detection
SW Front LH
Door Lock Control
SW Front LH
(EW)
Combination SW
(EL)
Combination SW
(–)
Combination
Meter
Unlock Warning SW
Cigarette Lighter
Power Outlet (Front)
W–B
Power Outlet (Rear)
W–B
A
Power Window
Master SW
(E)
(* 4)
W–B
(* 4)
W–B
B4
(E)
W–B
IE
196
2004 COROLLA (EWD533U)
Rear Window Defogger
SW
I
: Parts Location
Code
See Page
J2
A
35
J3
B
35
J4
A
35
Code
J5
See Page
B
Code
See Page
35
J8
A
36
J6
35
J9
B
36
J7
35
: Relay Blocks
Code
See Page
Relay Blocks (Relay Block Location)
1
22
Engine Room R/B (Engine Compartment Left)
3
28
RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code
IE
See Page
Junction Block and Wire Harness (Connector Location)
25
Roof Wire and Instrument Panel J/B (Lower Finish Panel)
25
Instrument Panel Wire and Instrument Panel J/B (Lower
(
Finish Panel))
3A
28
Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4B
30
Instrument Panel Wire and Center J/B (Behind the Combination Meter)
IF
IH
II
: Connector Joining Wire Harness and Wire Harness
Code
See Page
Joining Wire Harness and Wire Harness (Connector Location)
IA4
IA5
40
Engine
g
Room Main Wire and Instrument Panel Wire ((Left Side of the Instrument Panel Reinforcement))
IC1
40
Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IF1
42
Console Box Wire and Instrument Panel Wire (Under the Instrument Panel Center)
IG1
42
Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever)
IH1
42
Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit)
42
Engine Wire and Instrument Panel Wire (Blower Unit RH)
42
Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IA6
II1
II2
IJ2
: Ground Points
Code
EA
See Page
Ground Points Location
38
Front Right Fender
38
Left Side of the Cylinder Head
38
Front Left Suspension Tower
40
Behind the Combination Meter
IG
40
Right Kick Panel
BH
44
Under the Left Quarter Pillar
BI
44
Lower Back Panel
BJ
44
Under the Right Quarter Pillar
EB
EC
ED
IE
IF
: Splice Points
Code
See Page
Wire Harness with Splice Points
Code
E1
38
Engine Room Main Wire
B1
E2
38
Engine Wire
B2
E4
38
Engine Room Main Wire
I8
42
Instrument Panel Wire
See Page
Wire Harness with Splice Points
44
Roof Wire
B3
44
Front Door RH Wire
B4
44
Front Door LH Wire
197
2004 COROLLA (EWD533U)
J POWER SOURCE (Current Flow Chart)
198
2004 COROLLA (EWD533U)
J
199
2004 COROLLA (EWD533U)
J POWER SOURCE (Current Flow Chart)
Engine Room R/B,Engine Room J/B (See Page 22)
Fuse
System
Page
5A
ALT–S
Charging
56
10A
HAZARD
Turn Signal and Hazard Warning Light
78
10A
HEAD LH LWR
Headlight
70
10A
HEAD LH UPR
Headlight
70
10A
HEAD RH LWR
Headlight
70
10A
HEAD RH UPR
Combination Meter
Headlight
180
70
HORN
Horn
TVIP System
Wireless Door Lock Control
102
134
126
ABS
Clock
Combination Meter
Cruise Control
154
106
180
148
Headlight
Illumination
Interior Light
Light Reminder Buzzer and Key Reminder Buzzer
70
86
90
168
Radio and Player
Seat Belt Warning
SRS
TVIP System
176
172
159
134
Wireless Door Lock Control
126
10A
15A
DOME
15A
EFI
Electronically Controlled Transmission
Engine Control
142
58
15A
FOG
Fog Light
76
30A
ABS NO.1
ABS
154
ABS
Charging
Combination Meter
Cruise Control
154
56
180
148
Electronically Controlled Transmission
Engine Control
SRS
Starting and Ignition
142
58
159
52
TVIP System
134
30A
MAIN
30A
RDI FAN
Radiator Fan
186
40A
ABS NO.2
ABS
154
40A
HEAD MAIN
Headlight
TVIP System
Wireless Door Lock Control
70
134
126
∗ These are the page numbers of the first page on which the related system is shown.
200
2004 COROLLA (EWD533U)
J
Fuse
100A
System
Page
Charging
Illumination
Taillight
ALT
56
86
82
Instrument Panel J/B (See Page 24)
Fuse
System
Page
7.5A
OBD
Engine Control
58
10A
A/C
Air Conditioning
188
ECU–B
Fog Light
Headlight
TVIP System
76
70
134
ABS
Cruise Control
Radiator Fan
Shift Lock
154
148
186
166
TVIP System
134
ABS
Air Conditioning
Automatic Glare–Resistant EC Mirror with Compass
Back–Up Light
154
188
112
96
Charging
Combination Meter
Cruise Control
Electronically Controlled Transmission
56
180
148
142
Engine Control
Fog Light
Headlight
Heater
58
76
70
192
Interior Light
Light Reminder Buzzer and Key Reminder Buzzer
Moon Roof
Power Window
90
168
140
114
Rear Window Defogger
Seat Belt Warning
SRS
Turn Signal and Hazard Warning Light
174
172
159
78
M–HTR/DEF I–UP
Engine Control
58
AM2
ABS
Charging
Combination Meter
Cruise Control
154
56
180
148
Electronically Controlled Transmission
Engine Control
SRS
142
58
159
10A
10A
10A
10A
15A
ECU–IG
GAUGE
∗ These are the page numbers of the first page on which the related system is shown.
201
2004 COROLLA (EWD533U)
J POWER SOURCE (Current Flow Chart)
Fuse
15A
15A
15A
15A
15A
AM2
CIG
P/POINT
STOP
TAIL
System
Page
Starting and Ignition
TVIP System
52
134
Cigarette Lighter
Clock
Power Outlet
Radio and Player
104
106
108
176
Remote Control Mirror
110
Power Outlet
108
ABS
Cruise Control
Electronically Controlled Transmission
Engine Control
154
148
142
58
Shift Lock
Stop Light
166
94
Clock
Engine Control
Headlight
Illumination
106
58
70
86
Light Reminder Buzzer and Key Reminder Buzzer
Taillight
168
82
15A
WASHER
Wiper and Washer
98
25A
DOOR
Door Lock Control
Interior Light
Wireless Door Lock Control
118
90
126
25A
WIPER
Wiper and Washer
98
30A
POWER
Moon Roof
Power Window
140
114
40A
DEFOG
Rear Window Defogger
174
40A
HEATER
Air Conditioning
Heater
188
192
∗ These are the page numbers of the first page on which the related system is shown.
202
2004 COROLLA (EWD533U)
Memo
203
2004 COROLLA (EWD533U)
K CONNECTOR LIST
A1
A2
A3
Gray
Gray
Gray
1
1
1
2
6
3
7
4
8
A5
Yellow
2
1
2
1
2
5
9
A6
A7
A8
Yellow
Black
Black
1
1 2
2
A4
A10
A11
Black
1 2
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5
3 4
A12
A13
A14
A15
Yellow
Yellow
Yellow
Yellow
A
B
1 2 3
1 2 3 4 5 6
A
A B
1 2 3 4
1 2 3 4 5 6
7 8 9 1011121314151617
7 8 9 101112
7 8 9 101112
1819 2021 22 23 2425 26 27 28
A16
A17
A18
Yellow
1
1 2 3 4
B2
B3
B7
A20
B1
Black
Black
Gray
1 2
1 2
1
B4
B5
2
B6
Black
1
2
A19
1 2 3 4
Gray
1
B
4 5 6
1
2
1
2
3
4
4
2 3
5
6 7 8
1 2 3
4 5 6
C1
C2
C3
C4
Gray
Brown
Gray
Black
C5
1
1 2 3 4
1 2
1 2
1 2
204
2004 COROLLA (EWD533U)
1 2 3 4
2
K
C6
C7
C8
C9
1 2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Gray
1
2
1 2 3 4
C10
C11
Black
Black
C12
C13
1 2
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6
3 4
5 6 7 8 9 10 11 12 13
1 2
7 8 9 10 11 12
C14
D1
D2
1 2 3 4 5 6 7 8
1
16 15 14 13 12 11 10 9
9 10 11 12 13 14 15 16
3 4 5 6 7 8 9 10 11
2 12 13 14 15 16 17 18 19 20
8 7 6 5 4 3 2 1
D3
D4
D5
D6
D7
1
1
1
1
1 2 3 4 5
D8
1
2
3
4
5 6 7 8 9 10
D9
D10
1
1
2
3
4
5 6 7 8 9 10
D11
D12
2
3 4 5 6
1
1 2 3
4 5 6
7 8 9
2
3 4 5 6
10 11 12 13 14 15 16 17 18
205
2004 COROLLA (EWD533U)
K CONNECTOR LIST
D13
1
2
3
D14
4
1
5 6 7 8 9 10
2
3
E1
E2
Gray
Dark Gray
1 2
1 2 3
4 5 6
4
E3
1
5 6 7 8 9 10
2
3
4
5
6
7
8 9 10 11 12 13 14 15 16 17
18 19 20 21 22 23 24 25 26 27
28 29 30 31 32
E4
1
2
3
4
E5
5
6
7
1
8 9 10 11 12 13 14 15 16 17 18 19
2
3
4
E6
5
6
1
7 8 9 10 11 12 13 14 15 16
2
3
4
5
6
7
8 9 10 11 12 13 14 15 16 17
20 21 22 23
24 25
26 27
17 18 19 20 21 22 23 24 25 26 27
18 19 20 21 22 23
24 25
28 29 30 31
32 33
34 35
28 29 30
26 27
30 31
31 32 33 34 35
28 29
F1
F2
F3
F4
F5
Gray
Gray
Gray
Gray
Black
1 2 3
1 2 3
1
2
1
F6
F7
2
F8
33 34
F9
1 2 3
F10
G1
Black
Black
1 2 3
1 2 3
4 5
G2
1
1
1
2
2
G3
1
12
3
456 7 8
2
4
3
1
H1
H2
H3
Gray
Black
2
1
2
3
5
Black
1
2
1
2
H4
H5
H6
H7
H8
H9
Gray
Dark Gray
Black
Black
Dark Gray
(Bulb Type) Gray
1 2 3 4 5 6
2 1
4 3
1 2
1
1
2
1 2
3 4
206
2004 COROLLA (EWD533U)
K
H9
I1
I2
I3
I4
(LED Type) Black
Gray
Brown
Brown
Brown
2 1
1 2 3
1 2 3 4
1 2 3 4
1 2 3 4
I5
I6
I7
I8
I9
Brown
Gray
Gray
Gray
Gray
1 2
1 2
1 2
1 2
1 2 3 4
I10
I11
I12
Black
1 2 3 4 5 6 7
1
4
2
5
3
6
1
2
3
10
11
12
4 5 6 7 8 9
13 14 15 16 17 18 19
I13
J1
20 21 22 23 24 25 26
J2
J3
A A B B C C C D D E E
A A B B C C C D D E E
F F F F G G G H H H H
F F F F G G G H H H H
Black
A A A
B B
CCCDD DB
1 2 3
J4
J5
J6
A A A A A A
A A A A A A
A A
A A
A A A A A A A
B B B C C C
B B B C C C
J8
J9
A A A
B B
CCCDD DB
A A A A A A
B B B C C C
B B B C C C
L2
L3
L4
Gray
1
2
A
A
J10
A A A A A A
J7
M1
A
A
2
1
1 2 3 4 5
A
A
A
K1
L1
Black
Gray
1 2
M2
Black
1
A
1
2
M3
Brown
12
3
456 78
1 2
3 4
5 6
207
2004 COROLLA (EWD533U)
K CONNECTOR LIST
N1
N2
Gray
O1
P1
P2
P3
Gray
Black
Gray
Brown
1
1 2
1 2
P4
P5
P6
P7
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
1
1
2
1
3
4
P8
1
2
P9
P10
1
2
3 4 5 6
1
P11
2
1
3 4 5 6
R1
R2
Gray
Black
2
1
R6
3 4 5 6
P12
P13
Yellow
Yellow
1
1
2
R3
R5
Black
3 4
1
2
3 4 5 6
R12
R13
R7
R9
1 2 3 4 5 6 7 8
1 2
3 4
R14
R10
R11
2
1 2
3 4
R15
R16
Black
Black
1
1
1 2 3 4 5
2
1
1 2 3 4 5 6 7 8 9 10
2
R4
5 6 7 8 9 10
2
2
3 4 5 6
1 2
1
1
R17
1
2
2 1
3 2 1
2 1
208
2004 COROLLA (EWD533U)
K
*1 : w/ Cruise Control
*2 : w/o Cruise Control
R18
S1
S2
S3
Black
Black
1
1
3 2 1
1
2
23
24
3
4 5 6
7 8 9 10 11 12
13 14 15 16 17 18 19 20 21 22
S4
25 26 27 28 29 30 31 32 33 34
S5
Black
S6
S7
Yellow
Yellow
1 2
1 2
S8
1
1 2 3 4
1 2 3 4 5
4
3
2
S9
S9
S10
S11
T1
(*1) Blue
(*2) Black
Yellow
Yellow
Black
1 2 3 4
1 2 3 4
1
2
3
4
1
3
T2
2
1 2 3
4
T3
T4
T5
Black
12
3
456 7 8
2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
1
2
1
U1
V1
V2
V3
V4
V5
Black
Black
Black
Blue
Black
Black
1 2
1 2 3
1 2
1 2 3
1
2
1
2
W1
Black
1
2
209
2004 COROLLA (EWD533U)
L PART NUMBER OF CONNECTORS
Code
A1
Part Name
A/C Magnetic Clutch
Part Number
Code
90980–11271
C13
Cruise Control Clutch SW
90980–10906
C14
Cruise Control ECU
90980–12094
D1
Data Link Connector 3
90980–11665
D2
Daytime Running Light Relay
90980–12034
D3
Door Control Receiver
90980–11909
D4
Door Courtesy SW Front LH
D5
Door Courtesy SW Front RH
D6
Door Courtesy SW Rear LH
D7
Door Courtesy SW Rear RH
A/T Shift Lever Position SW
A2
Back–Up Light SW
90980–11784
Park/Neutral Position SW
A3
ABS Speed Sensor Front LH
A4
ABS Speed Sensor Front RH
A5
Airbag Sensor Front LH
A6
Airbag Sensor Front RH
A7
Ambient Temp. Sensor
90980–11003
90980–11856
90980–11030
A/C SW
A8
A10
Air Inlet Control SW
Part Name
90980–10871
Door Key Lock and Unlock SW Front LH
90980–12162
D8
Door Lock Motor Front LH
Defroster Mode Detection SW
Door Unlock Detection SW Front LH
A/T Shift Lever Illumination
Door Key Lock and Unlock SW Front RH
O/D Main SW
Part Number
90980–12211
D9
A11
Air Inlet Control Servo Motor
90980–11909
A12
Airbag Sensor Assembly
90980–11869
A13
Airbag Sensor Assembly
90980–11872
A14
Airbag Sensor Assembly
90980–11867
A15
Airbag Squib (Front Passenger Airbag
Assembly)
A16
Airbag Squib (Steering Wheel Pad)
A17
Antenna Amplifier
90980–10871
A18
Automatic Light Control Sensor
90980–11107
A19
ABS Speed Sensor Rear LH
90980–12160
90980
12160
90980–11900
90980–12226
Door Lock Motor Front RH
Door Unlock Detection SW Front RH
D10
Door Lock Control SW Front LH
90980–10797
Door Lock Control SW Front LH
D11
Power Window Master SW
90980–12122
D12
Door Lock Control SW Front RH
90980–10797
D13
Door Lock Motor Rear LH
D14
Door Lock Motor Rear RH
E1
Electronically Controlled Transmission
Solenoid
90980–10854
E2
Engine Coolant Temp. Sensor
90980–10737
90980–12226
A20
ABS Speed Sensor Rear RH
E3
Engine Control Module
90980–12144
B1
Back–Up Light SW
90980–11250
E4
Engine Control Module
90980–12145
B2
Brake Fluid Level Warning SW
90980–11207
E5
Engine Control Module
90980–12146
B3
Blower Motor
90980–10214
E6
Engine Control Module
90980–12142
B4
Blower Resistor
90980–11136
F1
Front Fog Light LH
B5
Blower SW
90980–10877
F2
Front Fog Light RH
90980–12257
F3
Buckle SW LH
B6
Seat Position Sensor
Front Parking Light LH
Buckle SW RH
B7
Occupant Detection Sensor
90980–11156
Front Turn Signal Light LH
Front Parking Light RH
90980–11020
90980–11950
F4
90980–10947
F5
Front Washer Motor
90980–10981
Front Turn Signal Light RH
C1
Camshaft Position Sensor
C2
Camshaft Timing Oil Control Valve (VVT)
90980–11162
F6
Front Wiper Motor
90980–11599
C3
Crankshaft Position Sensor
90980–10947
F7
Front Passenger Seat Belt Warning Light
90980–11296
C4
Cruise Control Actuator
90980–11150
F8
Front Door Speaker LH
F9
Front Door Speaker RH
Cigarette Lighter
C5
Power Outlet (Front)
90980–10760
90980–10935
Fuel Pump
F10
Fuel Sender
90980–11077
C6
Cigarette Lighter Illumination
90980–11148
C7
Clock
90980–11950
G1
Generator
90980–11349
C8
Clutch Start SW
90980–10825
G2
Generator
90980–09373
C9
Combination Meter
90980–12169
G3
Glass Breakage Sensor ECU
90980–10799
C10
Combination SW
90980–12183
H1
Headlight LH (High)
90080–98039
C11
Combination SW
90980–12008
H2
Headlight LH (Low)
90080–98038
C12
Combination SW
90980–12007
H3
Headlight RH (High)
90080–98039
Note: Not all of the above part numbers of the connector are established for the supply.
210
2004 COROLLA (EWD533U)
L
Code
Part Name
Part Number
Code
Part Name
Part Number
H4
Headlight RH (Low)
90080–98038
P4
Power Outlet (Rear)
H5
Heated Oxygen Sensor (Bank 1 Sensor 1)
90980–10869
P5
Power Window Control SW Front RH
H6
Horn
90980–10619
P6
Power Window Control SW Rear LH
H7
Hazard SW
90980–10933
P7
Power Window Control SW Rear RH
H8
Heated Oxygen Sensor (Bank 1 Sensor 2)
90980–10794
P8
Power Window Motor Front LH
High Mounted Stop Light (Bulb Type)
90980–10860
P9
Power Window Motor Front RH
High Mounted Stop Light (LED Type)
90980–11367
P10
Power Window Motor Rear LH
I1
Idle Air Control Valve
90980–11145
P11
Power Window Motor Rear RH
I2
Ignition Coil and Igniter No.1
P12
Pretensioner LH
I3
Ignition Coil and Igniter No.2
P13
Pretensioner RH
I4
Ignition Coil and Igniter No.3
R1
Radiator Fan Motor
I5
Ignition Coil and Igniter No.4
R2
Radiator Fan Resistor
I6
Injector No.1
R3
Radio and Player
90980–10997
I7
Injector No.2
R4
Radio and Player
90980–10996
R5
Rear Window Defogger SW
90980–10789
R6
Remote Control Mirror SW
90980–11657
R7
Rheostat
90980–12217
H9
I8
Injector No.3
90980–11885
90980–11875
I9
Injector No.4
I10
Ignition SW
90980–11778
I11
Integration Relay
90980–12203
Inner Mirror
I12
Personal Light
90980–11794
90980–10760
90980–10789
90980–10797
90980–12253
90980–10928
R9
Rear Combination Light LH
90980–10795
R10
Rear Combination Light LH
90980–11148
R11
Rear Combination Light RH
90980–10795
90980–11148
I13
Interior Light
90980–10908
R12
Rear Combination Light RH
J1
Junction Connector
90980–10803
R13
Rear Speaker LH
J2
Junction Connector
R14
Rear Speaker RH
J3
Junction Connector
R15
Rear Window Defogger
90980–10914
J4
Junction Connector
R16
Rear Window Defogger
90980–10913
90980–11915
90980–11661
90980–11299
J5
Junction Connector
R17
Remote Control Mirror LH
J6
Junction Connector
90980–11539
R18
Remote Control Mirror RH
J7
Junction Connector
90980–11686
S1
Skid Control ECU with Actuator
82824–12300
J8
Junction Connector
S2
Starter
90980–09463
J9
Junction Connector
S3
Starter
90980–11400
J10
Junction Connector
90980–10803
S4
Security Indicator
90980–11013
K1
Knock Sensor
90980–11875
S5
Shift Lock Control ECU
90980–11909
L1
License Plate Light LH
S6
Side Airbag Squib LH
L2
License Plate Light RH
S7
Side Airbag Squib RH
L3
Luggage Compartment Light
S8
Starter Cut Relay
82660–0C010
L4
Luggage Compartment Light SW
90980–11097
S9
Stop Light SW
90980–11118
M1
Mass Air Flow Meter
90980–11317
S10
Side Airbag Sensor LH
S11
Side Airbag Sensor RH
90980–11661
90980–11148
Moon Roof Control Relay and SW
M2
Personal Light
90980–10799
90980–10907
90980–11864
90980–12225
T1
Throttle Position Sensor
90980–11261
M3
Moon Roof Motor and Limit SW
90980–11011
T2
Turn Signal Flasher Relay
90980–10799
N1
Noise Filter (Ignition)
90980–10843
T3
TVIP ECU
90980–12169
N2
Noise Filter (Rear Window Defogger)
90980–10825
T4
Tweeter LH
O1
Oil Pressure SW
90980–11363
T5
Tweeter RH
P1
Power Steering Oil Pressure SW
90980–11428
U1
Unlock Warning SW
90980–10860
P2
Pressure SW
90980–10943
V1
Vehicle Speed Sensor (Combination Meter)
90980–11143
P3
Parking Brake SW
90980–10871
V2
VSV (Canister Closed Valve)
90980–11162
90980–10915
211
2004 COROLLA (EWD533U)
L PART NUMBER OF CONNECTORS
Code
Part Name
Part Number
V3
VSV (EVAP)
90980–11156
V4
Vapor Pressure Sensor
90980–11143
V5
VSV (Vapor Pressure Sensor)
90980–11859
W1
Washer Level Sensor
90980–11068
Code
Part Name
Note: Not all of the above part numbers of the connector are established for the supply.
212
2004 COROLLA (EWD533U)
Part Number
L
Code
Part Name
Part Number
Code
Part Name
Part Number
213
2004 COROLLA (EWD533U)
M OVERALL ELECTRICAL WIRING DIAGRAM
214
2004 COROLLA (EWD533U)
[A] : System Title
[B] : Indicates the wiring color.
Wire colors are indicated by an alphabetical code.
B
= Black
W = White
BR = Brown
L
= Blue
V
SB = Sky Blue
= Violet
R = Red
G = Green
LG = Light Green
P
Y
GR = Gray
= Pink
= Yellow
[F] : Junction Block (The number in the circle is the J/B No.
and the connector code is shown beside it).
Junction Blocks are shaded to clearly separate them
from other parts.
Example:
3C indicates that
it is inside
Junction Block
No.3
O = Orange
The first letter indicates the basic wire color and the
second letter indicates the color of the stripe.
Example:
L–Y
[G] : Indicates related system.
2004 COROLLA (EWD533U)
L
(Blue)
[H] : Indicates the wiring harness and wiring harness
connector. The wiring harness with male
terminal is shown with arrows ( ).
Outside numerals are pin numbers.
Y
(Yellow)
[C] : The position of the parts is the same as shown in
the wiring diagram and wire routing.
[D] : Indicates the pin number of the connector.
The numbering system is different for female
and male connectors.
Example : Numbered in order
from upper left to
lower right
Numbered in order
from upper right to
lower left
Female
[I]
Male (
)
: ( ) is used to indicate different wiring and
connector, etc. when the vehicle model, engine type,
or specification is different.
[J] : Indicates a shielded cable.
Female
Male
The numbering system for the overall wiring diagram is
the same as above
[E] : Indicates a Relay Block. No shading is used and
only the Relay Block No. is shown to distinguish
it from the J/B.
Example :
[K] : Indicates and located on ground point.
[L] : The same code occuring on the next page indicates
that the wire harness is continuous.
Indicates Relay Block No.1
M
215
SYSTEMS
LOCATION
SYSTEMS
LOCATION
2004 COROLLA (EWD533U)
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12–2
Light Reminder Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19–3
Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26–2
Moon Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18–3
Automatic Glare–Resistant EC Mirror with Compass . . . . . . . . . . . 14–4
Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21–3
Back–Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–8
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1~27–1
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17–2
Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21–2
Radiator Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25–3
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21–2
Radio and Player . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23–2
Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24–2
Rear Window Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22–2
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11–2
Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20–2
Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15–2
Seat Belt Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19–2
Electronically Controlled Transmission . . . . . . . . . . . . . . . . . . . . . . . . 10–2
Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18–4
Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2
SRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13–2
Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–8
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
Headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3
Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–2
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27–2
Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–2
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21–4
Turn Signal and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2
Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
TVIP System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16–2
Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–2
Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14–2
Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–2
Wireless Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15–8
Key Reminder Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19–4
M OVERALL ELECTRICAL WIRING DIAGRAM
216
SYSTEM INDEX
1 COROLLA
P ow er S ou rc e
S ta rtin g
Ig nitio n
1
B
5 AM2
IG2 6
B–W
ST2 4
R
4
3
2
B–W
* 1 : w/ TVIP System
* 2 : w/o TVIP System
5 IL
6 IM
R
(A/T)
R
(M/T)
I10
Ignition SW
15A
AM2
3 IA2
R
(A/T)
II2
2
12 IC
E B
3 IM
J 2(A), J 3(B)
Junction
Connector
R
(A/T)
R
(M/T)
ST
Relay
A A
1
10 EA1
A A
B–W
B–R
2 IA4
B–W
11 IL
4 IF
IGT
IGF
GND
IGT
IGF
GND
IGF
IGT
GND
4
3
2
4
3
2
4
2
3
4
W–B
W
L–Y
W–B
W–B
B
(*1)
J 2(A), J 3(B)
Junction
Connector
G A
B
B
(*2)
B
(*1)
B
(*2 M/T)
B
B
(*1 M/T)
J 2(A)
Junction
Connector
F A
F A
F A
F A
W
L–Y
L–Y
L–Y
L–Y
GR
Y–G
R–L
B
(A/T)
B
(M/T)
B
(*2)
B
(* 2)
G A
W–B
L–Y
GR
W–B
L–Y
Y–G
W–B
H B
W–B
S 2(A), S 3(B)
Starter
IE
J6
Junction
Connector
Behind the Combination
Meter
W–B
A
111
Engine Control
Module<3–3>
Battery
111
I5
Ignition Coil and
Igniter No. 4
GND
W–B
11 II2
G A
1 B
B–W
IGF
B
(A/T)
B
(A/T)
B
10 IA5
FL MAIN
2. 0L
1
A
+B
2
W–B
7 II1
B–R
1
I4
Ignition Coil and
Igniter No. 3
B–W
I3
Ignition Coil and
Igniter No. 2
+B
IGT
L–Y
2
B
(*1)
1 1A
1
3
R–L
4
1
+B
6
B
(M/T)
30A
MAIN
N
1
B–W
S8
Starter Cut
Relay
2
+B
B–W
111
B–R
(*1)
1
L
P
N1
Noise Filter
(Ignition)
B–W
(*1)
3
B
C8
Clutch
Start SW
A2
Park/Neutral
Position SW
W–B
B
(*2)
B
1
9
B–W
I2
Ignition Coil and
Igniter No. 1
1
1
1
B–W
TVIP ECU
<16–3>
2
B–W
R
(A/T)
1 IM
B–R
2004 COROLLA (EWD533U)
5
Engine Control Module
<3–3>
B–W
3
12
Engine Control
Module<3–5><3–6>
Left Side of the
Cylinder Head
EC
2 COROLLA
P ow e r S ou rc e
C h arg in g
1
4
3
2
W
IG1 2
B–W
1 AM1
B–Y
B–Y
ACC
W
1 IA
2 IF
5
1
5 IL
W
B
5 AM2
IG2 6
B–W
10A
GAUGE
ST2
12 IF
B–O
15A
AM2
1 1C
31
1
2
W–B
W–B
R–W
1
14 II2
5 EA1
9 3B
W
1
8 3B
30A MAIN
5A ALT–S
100A ALT
1
2
Y
Y
2
22 3B
R–W
1
10 IH
R–W
1 1B
4 IF
20 3B
B–R
1 1D
W
B–R
W
W
B–G
2 IA4
C9
Combination Meter
3 IM
2 IG
Charge
Daytime Running Light
Relay<4–2>
1 IB
2
8 IK
32
W
2004 COROLLA (EWD533U)
25A
AM1
3
I10
Ignition SW
6 IM
IG1
Relay
10 3B
Y
B
C B
J 4(A), J 5(B)
Junction
Connector
B A
1 1A
2 II2
R–W
B–G
W
Y
FL MAIN
2. 0L
1 A
L
S A
B B
Battery
IG A
3
1
A
2
G 1(A), G 2(B)
Generator
Behind the Combination
Meter
IE
J6
Junction
Connector
Right
Kick
Panel
A
IG
J7
Junction
Connector
(Cont. next page)
3 COROLLA
P ow e r S ou rc e
E n gin e C o ntro l
1
4
3
2
R–B
A
B–W
IG2 6
B–W
B–O
5 AM2
B–W
ST2
32
8 II1
B–O
B
R–B
B–W
8 IK
2
2 A
# 10
L
W
1 A
W
3 A
#20
4 A
#30
# 40
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
2
19 ID
B
11 D
BATT
3
Y
R–Y
C/OPN Relay
3 D
1 IG
10 D
NSW
8 B
STA
9 B
E03
E01
5 B
E02
7 A
6 A
RSO
EVP
5 A
CCV
1 C
12 A
2
L
B
R
(A/T)
G–R
B
B–R
1
L–B
17 II2
L
GND
VISC
3
2
2
V2
VSV (Canister
Closed Valve)
B B
1
1
DUTY
V3
VSV (EVAP)
B B
1
C A
I1
Idle Air
Control Valve
W–B
1 1A
B–L
C A
J 4(A), J 5(B)
Junction
Connector
5
Clutch Start SW(M/T)
Park/Neutral
Position SW(A/T)
<1–2>
M
1
Ignition SW
<1–3>
9 II1
F10
Fuel Pump
15A EFI
30A MAIN
100A ALT
4
9 EA1
W–B
W–B
W–B
B
2
1
FC
4 IG
1
1
R–W
B–W
B–R
W
1
1
3
2
1
5
1
EFI
Relay
1
2
I9
Injector No. 4
R–W
R–W
B–R
1
2 IA4
2
1
I8
Injector No. 3
2
5
2
33
1
3 EA1
3 IM
1 1C
1
I7
Injector No. 2
B–W
15A AM2
7. 5A OBD
2004 COROLLA (EWD533U)
1 IB
1
I6
Injector No. 1
1 IA2
B–W
5 IL
B–W
12 IC
B–W
B–W
6 IM
B–W
B–W
Malfunction
Indicator Lamp
R–W
10 EA1
7 IJ
B–W
C9
Combination Meter
I10
Ignition SW
2
W–B
B
B
B
B
B
B
FL MAIN
2. 0L
W–B
W–B
B
B
Battery
Front Left
Suspension Tower
ED
Under the Left
Quarter Pillar
BH
Left Side of the
Cylinder Head
EC
B
B
B
B
B
L–W
Y–R
Y
G–W
G
W
L
R
LG
BR
W
L
BR
BR
L–R
R
T1
Throttle Position
Sensor
J 2(A), J 3(B)
Junction
Connector
V4
Vapor Pressure
Sensor
J 2(A), J 3(B)
Junction
Connector
E2
Engine Coolant
Temp. Sensor
B
Y
Y
BR
BR
BR
V5
VSV
(Vapor Pressure Sensor)
2
P1
Power Steering
Oil Pressure SW
7 ID2
II2
16
Air Conditioning
System<26–4>
Radiator Fan
System<25–3>
Cruise Control ECU
<11–3>
Combination Meter
<24–2>
Airbag Sensor Assembly
<13–5>
Stop Light SW
<7–2>
TAIL Relay(USA)
<8–2>
Combination SW
(Canada)<8–2>
” DEF I/UP” Fuse
<22–3>
W
Y–B
M1
Mass Air Flow
Meter
L–W
THA
G
4
E2G
BR
B
W–B
B
B
C
B
B
L–Y
GR
Y–G
R–L
2
VG
6 ID2
1
3
BR
2
D B
3
H A
H A
H A
1
5
1
8 ID2
Y
W–B
Right Kick Panel
IG
J7
Junction
Connector
A
E2
+B
II2
10
B
B
B
B–Y
Y
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
4 D
Y
2004 COROLLA (EWD533U)
1
3
1
B A
B A
2
1
F B
F B
2
2 ID2
1 ID2
II2
7
TBP
VTA
VC
PTNK
21 A
18 A
21 D
BR
28 A
19 A
32 B 20 A
E2
THW
THA
EVG
VG
PSW
EC
24 B
29 B
28 B
THR
PRS
A/CS ACMG
32 C
13 A
2 C
33 C 31 C
6 D
7 D
ACLD
CF
FAN
IDLO
THWO
F/PS
16 D
14 C
14 D
19 C
12 D
13 D
STP
ELS
ELS2
IGT4
IGF
11 A
23 A
10 A
9 A
IGT3
IGT2
IGT1
OCV–
OCV+
C2
Camshaft Timing Oil
Control Valve (VVT)
2
8 A
14 A
15 A
Ignition Coil and Igniter
No. 1, No. 2, No. 3 and No. 4
<1–3><1–4>
1
A
R–B
8
7
6
5
R–B
A
(Cont. next page)
3 COROLLA (Cont’ d)
E n gine C on trol
Y
3 COROLLA (Cont’ d)
A
BAT
Airbag Sensor
Assembly
<13–5>
D1
Data Link Connector 3
Skid Control ECU
with Actuator
<12–4>
BR
W–B
P–B
P–B
P–B
P–B
P
L–R
V–W
B
Airbag Sensor
Assembly
<13–5>
Cruise Control
ECU<11–4>
BR
Skid Control ECU
with Actuator
<12–4>
W–B
W
B
BR
W
B
P–B
(*1)
(*1)
BR
(*1)
K1
Knock Sensor
W
J 4(A), J 5(B)
Junction
Connector
(*1)
H8
Heated Oxygen Sensor
(Bank 1 Sensor 2)
B
H5
Heated Oxygen Sensor
(Bank 1 Sensor 1)
BR
W–B
BR
BR
BR
BR
BR
BR
B
(*1)
BR
Behind the Combination
Meter
IE
EB
Left Side of the
Cylinder Head
Airbag Sensor
Assembly
<13–6>
Skid Control ECU
with Actuator
<12–4>
B
(*1)
W
W
B
P
A
(*1)
B–Y
GR
P–B
P
L–R
L–R
L–R
Combination Meter
<24–2>
Combination Meter
<24–3>
C1
Camshaft Position
Sensor
J 2(A), J 3(B)
Junction
Connector
W
B
B
B
B
A A
3
1
II2
8
B
4
4B
1
4B
A A
E1
6
II1
C
C3
Crankshaft Position
Sensor
3 4B
21 4B
A A
A A
A A
+B
2
4B
E1
A B
+B
A B
OX
OX
2 B
2004 COROLLA (EWD533U)
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
A B
4
HT
3
HT
4 4C
16 4B
1
2
(*1)
1
2
9 II2
II2
18
(*1)
EKNK
KNK1
E1
1 B
7 B
21 B
4 C
20 D
5 4C
2 4C
3 3B
1 II1
TC
WFSE
SIL
SPD
19 D
18 D
17 C
5 D
OX1B
HT1B
OX1A
+B
HT1A
23 B
1 D
4 B
2
A B
4
2
A B
TACH
G22+
NE–
NE+
26 A
34 A
27 A
15
1 4C
3 4C
4 3B
1 3B
SG
5
TS
7
1
2 3B
E A
E A
CG
A/B
4
11
12
13
WFSE
TC
SIL
2
R–B
(*1)
1
B
B
B
16
12
11
10
9
R–B
* 1 : Shielded
E n gine C on tro l
J6
Junction
Connector
(Cont. next page)
4 COROLLA
P ow e r S ou rc e
*
*
*
*
H e ad lig ht
1
4
3
2
1 : USA
2 : w/ TVIP System
3 : w/ Wireless Door Lock
4 : w/ Fog Light
G
R
G–O
(*4)
A18
Automatic Light
Control Sensor
20
19
18
CSB
3
TVIP ECU
<16–3>
Integration
Relay <15–7>
DRL
H–LP
1
6
R–Y
R–B
W–R
5 3C
4 3C
R
R
R
W–B
W–B
12
10
DIM
13
W–B
R–Y
4 IF
13
E
2
6 3C
R
(*3)
10 IH
R
(*2)
W
8
9
Tail
T
RF
H
EL
HL HU ED
Dimmer SW
Light
Control SW
1
OFF
Head
C12
Combination SW
E
100A ALT
15A FOG
1
4
2
2
40A HEAD MAIN
1
HI
16
Taillight
System
<6–1>
1 1C
FOG
R
10A GAUGE
25A AM1
W
G
2
1 1D
PKB
11
BRK
7
R
1
10
CSE
H
D2
Daytime Running
Light Relay
1 IB
1
CSO
G–O
(*4)
TAIL
P3
Parking
Brake SW
R–B
14
T
1
R–W
15
CHG–
Skid Control ECU
with Actuator
(w/ ABS)<12–4>
Combination Meter
(w/o ABS)<24–8>
8
+B
C
5
IG1
Relay
2
R
2004 COROLLA (EWD533U)
10A ECU–B
1
3
B
2 IE1
G–R
(*1)
IG
G–W
(*1)
12
2 IG
3 IE1
G–O
(*1)
1 IA
3
G–Y
(*1)
2 IF
Y
12 IF
R–B
1 IH
CLTE
4
1 IE1
R–W
I10
Ignition SW
CLTS
1
G–B
(*1)
R–W
W
B–Y
W
R–B
12 3B
CLTB
G–Y
(*1)
22 3B
IG1 2
Taillight
System<6–1>
1 AM1
Generator
<2–2>
ACC
A
EL
Low
High
R–Y
D
Flash
3 IA4
11
R–B
1 1A
E
B
W–R
W–B
Battery
W–B
W–B
FL MAIN
2. 0L
A
J7
Junction
Connector
A
IG
Right Kick Panel
F
W–B
A
J6
Junction
Connector
W–B
A
A
W–B
Behind the Combination
Meter
IE
W–B
ED
Front Left
Suspension Tower
G
4 COROLLA (Cont’ d)
H e ad lig h t
A
B
C
F o g L ig ht
5
G
8
7
6
R
* 4 : w/ Fog Light
G–O
(*4)
R
R
R–B
1
1
R–B
R
1
3
HEAD Relay
2
5
1
1
1
1
3
1
1
1
10A
HEAD LH
UPR
R–B
R–Y
R–B
2
DIMMER
Relay
10A
HEAD RH
UPR
5
2
2
1
1
G
1
R
R
1
1
1
6 IA6
10A
HEAD LH
LWR
4 IA2
W–R
1
5
2
3
1
1
R
R–Y
2
9 IA5
1
13
W–B
W–B
2
BFG LFG
Fog
Light SW
W–B
R–B
OFF
On
C12
Combination SW
W–R
R
R–Y
H3
Headlight RH
(High)
1
R–B
R–B
4
ED
1
2
2
W–B
W–B
Front Left
Suspension Tower
1
EA
Front Right
Fender
Front Left
Suspension Tower
ED
W–B
Front Right
Fender
F2
Front Fog Light RH
R
W–B
W–B
R
G–O
(*4)
W–B
G
F1
Front Fog Light LH
F
1
IA4
2
H1
Headlight LH
(High)
H4
Headlight RH
(Low)
1
High Beam
R
2
C9
Combination Meter
1
R–W
H2
Headlight LH
(Low)
R–Y
R–B
R
R–Y
1
1
FOG
Relay
14
2
E
R
2
1
10 IA2
10A
HEAD RH
LWR
R–W
2
D
G
W–R
2004 COROLLA (EWD533U)
1
1
1
EA
5 COROLLA
P ow er S ou rc e
T urn S ign al an d H a z ard W a rning L igh t
1
4
3
2
R–W
G–W
* 1 : w/ Wireless Door Lock
* 2 : w/o Wireless Door Lock
* 3 : w/ TVIP System
ACC
22 3B
B–Y
8 IA5
R–W
IG1 2
W
1 AM1
15 3B
1
5
2 IG
2
25A
AM1
1
10A GAUGE
IG1
Relay
12 IF
G–W
1 IA
R–W
W
I10
Ignition SW
2 IF
3
T2
Turn Signal Flasher Relay
4
IG
+B
LL
LR
3
G–Y
GND
EL
7
2
ER
5
HAZ
8
6
4 IF
Y–B(*2)
1 IC
17 ID
11 IH
5 IH
13 IH
6 IG
12 IH
5 IG
2 3C
1 1D
W
W
1
5
1 1C
6
2
Integration Relay
<15–3>
17 4B
15 4B
21 3A
18 4B
21 4B
11 3A
4
2
W–B
W–B
W–B
W–B
FL MAIN
2. 0L
W–B
W–B
W–B
Battery
W–B
Front Left
Suspension
Tower
ED
W–B
W–B
IE
J6
Junction
Connector
W–B
Behind the Combination
Meter
A
W–B
A
EA
Front
Right
Fender
BI
A
Lower Back Panel
Y–B
(*1)
LH
W–B
RH
3
W–B
B
4
LH
C9
Combination Meter
R11
Rear Combination
Light RH
3
Turn
2
3
Turn
2
3
R9
Rear Combination
Light LH
3
1 1A
F4
Front Turn Signal
Light RH
F3
Front Turn Signal
Light LH
1
G–Y
G–B
G–Y
G–B
G–Y
G–B
W–B
100A ALT
10A HAZARD
1
1 3C
TR
RH
C12
Combination
SW
25
E
H7
Hazard SW
2
24
7
TL
TVIP ECU
<16–3>
12 ID
Turn SW
8 IC
2
3 3C
Y–B
(*3)
1 IK
Y–B
(*1)
9 IL
Y–B
(*1)
G–O
G–R
W–B
G–Y
G–B
Y–B
(*1)
1 IB
G–W
2004 COROLLA (EWD533U)
G–B
Right Kick Panel
IG
J7
Junction
Connector
6 COROLLA
P o w er S o u rce
T aillig ht
1
4
3
2
G–W
(USA)
G–W
(USA)
3
G–W
(Canada)
3
3
2
5
TAIL Relay
1
7 IH
2 ID
J 8(A), J 9(B)
Junction Connector
1 IB
G
G
G
G
(USA)
G
3
2 IC
G
3
G–B
(USA)
15A
TAIL
2 IL
B B
B B
14
TAIL
C A
G
G
G
G
G
G
G
(Canada)
2
G–W
(USA)
G–W
(Canada)
C A
J1
Junction
Connector
A
1 1C
C A
A
A
15
W
13
1
1
W–B
(USA)
B
FL MAIN
2. 0L
A
J8
Junction
Connector
A
A
11 4B
W–B
W–B
W–B
W–B
W–B
Battery
1
W–B
10
L2
License Plate
Light RH
C12
Combination SW
2
W–B
1 1A
4
2
L1
License Plate
Light LH
4
R11
Rear Combination
Light RH
2
Head
Tail
2
Tail
1
Tail
OFF
1
R9
Rear Combination
Light LH
1
F4
Front Parking
Light RH
T
F3
Front Parking
Light LH
1
E
Light Control
SW
100A ALT
2004 COROLLA (EWD533U)
D2
Daytime Running
Light Relay
T
21 4B
W–B
(USA)
A
Behind the Combination
Meter
IE
J6
Junction
Connector
W–B
Front Left
Suspension
Tower
ED
W–B
EA
Front Right
Fender
Lower Back Panel
BI
BH
Under the Left
Quarter Pillar
7 COROLLA
R–W
G–W
G–W
G–W
G–W
Skid Control ECU with
Actuator<12–4>
2
1
W–B
(Bulb Type)
W–B
(LED Type)
W–B
W–B
Cruise Control ECU
<11–4>
Shift Lock Control ECU
<18–4>
Engine Control
Module<3–7>
W–B
Under the Left
Quarter Pillar
H9
High Mounted
Stop Light
H9
High Mounted
Stop Light
Stop
R9
Rear Combination
Light LH
Stop
G–W
G–W
G–W
A
B
J8
Junction
Connector
A
G–W
(LED Type)
G–W
(Bulb Type)
1
R11
Rear Combination
Light RH
2
100A ALT
W–B
Battery
A
FL MAIN
2. 0L
BH
BI
Lower Back Panel
4
4
G–W
G–W
W
1 1A
G–W
G–W
(w/ ABS)
R–W
1 IB
12 3C
2004 COROLLA (EWD533U)
13 3C
1
2
2
2
B A
B A
1 IL
15A
STOP
10 3C
11 3C
1 1C
J 8(A), J 9(B)
Junction
Connector
7 ID
5 IC
4
3
2
1
C B
C B
14 IC
S to p L igh t
P ow e r S o urc e
2
S9
Stop Light SW
1
8 COROLLA
L–W
Light Control
SW
20 4C
Head
G
G
G–W
(*2)
G
G
G
G
G
G
G
G
G
(*1)
G–W
(*1)
L–W
G
G–W
(*1)
R7
Rheostat
+B
C9
Combination Meter
Illumination
A10
A/T Shift Lever
Illumination
C6
Cigarette Lighter
Illumination
B5
Blower SW
H7
Hazard SW
ILL–
GND
5
1
3
TAIL Relay
W
W–B
W–B
W–B
W–B
W–B
W–B
W–R
W–R
G
(*1)
15A DOME
100A ALT
W–B
W–B
R5
Rear Window Defogger SW
W–B
A8
A/C SW
R 3(A), R 4(B)
Radio and Player
L–W
19 4B
Taillight System
<6–1>
B
W–B
J6
Junction
Connector
IE
Behind the Combination
Meter
A
Battery
W–B
W–B
W–B
W–B
W–B
LED
5
21 4B
FL MAIN
2. 0L
18
2004 COROLLA (EWD533U)
1 1A
5 B
W–B
6
2
1 IB
W–B
1
1
3
4
3
5
3
2
8
5
1
10
G
G
G
G
G
G
G
G
G
28
3
3
2
2
2
1 1C
1
Tail
TAIL
3
1
10 A
3
3
Engine Control
Module<3–6>
G
G
(*2)
L–W
15A
TAIL
7 IC
1
1
7 IH
4 IL
10
13
T
E
Clock
<21–2>
C12
Combination SW
OFF
4
3
2
1
* 1 : USA
* 2 : Canada
Illu m in ation
P ow e r S ou rc e
18 4C
(Cont. next page)
9 COROLLA
P ow e r S o urc e
Inte rio r L igh t
1
*
*
*
*
W
ACC
1 AM1
4
3
2
IG1 2
1 : w/ Moon Roof
2 : w/o Moon Roof
5 : w/ Automatic Glare–Resistant EC Mirror
7 : w/ TVIP System
B–Y
5
12 IF
2
3
10A GAUGE
1 IA
1
IG1 Relay
W
I10
Ignition SW
2 IF
25A DOOR
25A AM1
I11(A)
Integration Relay
10
1
IG
+B
GND
DCTY
9
PRCTY
5
6
B
C
W
W
7 IC
1 1D
4 IF
10 IH
1 IE
1 ID
3 IL
4 IK
4 IL
6 IE
4 IE
4 ID
1 1C
L–W
L–W
R–Y
2
2
R–W
I13
Interior Light
A
B
J10
Junction
Connector
Door
TVIP ECU
<16–4>
A
R–W
(*7)
TVIP ECU
<16–4>
A
R–W
D4
Door Courtesy SW
Front LH
1
L–W
C9
Combination Meter
19 4C
D
L3
Luggage Compartment
Light
1
L–W
20
W–B
W–B
1
B
(*1 *5)
20 4C
R–W
R–W
(*7)
R
(*7)
17
1
1 1A
L–W
R
R–W
15A DOME
1
W–B
(*1)
B
(*2 *5)
2
2
R
R–W
L–W
1
100A ALT
2004 COROLLA (EWD533U)
A
1 IB
5
FL MAIN
2. 0L
1
L–W
A
Battery
A
J6
Junction
Connector
Behind the Combination
Meter
IE
L4
Luggage Compartment
Light SW
J7
Junction
Connector
IG
Right Kick
Panel
W–B(*1)
B(*2 *5)
E
F
9 COROLLA (Cont’ d)
In terior L ig ht
5
8
7
6
*
*
*
*
*
*
*
1 : w/ Moon Roof
2 : w/o Moon Roof
3 : w/o Door Lock Control
4 : w/ Door Lock Control
5 : w/ Automatic Glare–Resistant EC Mirror
6 : w/o Automatic Glare–Resistant EC Mirror
7 : w/ TVIP System
I11(A)
Integration Relay
LP2
12 A
LP
3 A
PCTY
13 A
3 IE
14 ID
15 ID
3 IK
R–W
(*4)
C
R–W
(*4)
B
(*2 *6)
B
3 IG
R–B
3 IK1
7
10 4B
7 4B
4
3
W–B
R–W
(*4)
R–W
(*3)
R–W
(*3)
TVIP ECU
<16–3>
9 4B
B
(*2 *6)
R–Y
R–B
(*5)
(*6)
(*5)
I12
Personal Light
(*5)
(*6)
(*5)
(*6)
M2
Personal Light
(*6)
1
On
Off
Door
1
R–W
(*7)
R7
Rheostat
B
(*1 *5)
R–W
(*3)
B
(*2, *1 *5)
D
B
(*1 *6)
2004 COROLLA (EWD533U)
A
3
6
1
R–W
(*4)
1
D5
Door Courtesy SW
Front RH
D7
Door Courtesy
SW Rear RH
D6
Door Courtesy
SW Rear LH
B
(*2 *6)
B
(*2 *5)
F
B
(*1 *5)
W–B
(*1)
E
1
19 4B
21
4B
W–B
A
J6
Junction
Connector
W–B(*1)
B(*2 *5)
IE
Behind the Combination
Meter
(Cont. next page)
10 COROLLA
P o w e r S o ur ce
E le c tron ic a lly C on trolled T ran sm iss ion
1
* 1 : w/ Cruise Control
4
3
2
R–W
A
B–W
B–Y
5 AM2
IG2 6
B–W
B–W
20 3B
B–W
W
IG1 2
R–W
ACC
1 AM1
R–W
ST2
1
5
2 IG
10A GAUGE
IG1 Relay
15A AM2
25A AM1
2
3
3 D
10 IH
R–W
B–R
W
R–W
+B
21 A
THW
VTA
18 A
VC
19 C
17 C
SPD
STP
18 C
OD1
SLT+
17 A
SLT–
16 A
S1
SL
S2
15 B
13 B
14 B
1
L
L–W
P
B
EFI Relay
3 4B
L
15A EFI
30A MAIN
100A ALT
3
R–Y
1
2
R–W
5
2
D A
1
1
1
1
4
3
2
6
SLT+
SLT–
S1
SL
S2
B
B
W–B
1 1A
1 4B
B
Y
W
GR
G
B B
D A
J 2(A), J 3(B)
Junction
Connector
1
19 A
1
1
2
1
E2
R–W
1
2
B
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
1 D
1 1C
1 1D
28 A
W–B
W–B
2 IA4
B–O
R–Y
(*1)
R–W
B–W
B–R
4 IF
BATT
W
2004 COROLLA (EWD533U)
3 IM
8 IK
1 IA2
3 EA1
5 IL
Cruise Control ECU
<11–3>
1 IA
R–W
2 IF
B–W
B
W
6 IM
12 IF
1 IB
I10
Ignition SW
12 IC
Engine Control System
<3–6><3–7><3–8><3–10>
10 EA1
22 3B
B
L
(*1)
9 EA1
FL MAIN
2. 0L
6 II1
B
Behind the Combination
Meter
IE
W–B
A
J6
Junction
Connector
Front Left
Suspension Tower
ED
E1
Electronically Controlled Transmission Solenoid
Cruise
Control
ECU<11–3>
W–B
Battery
W–B
C
10 COROLLA (Cont’ d)
E le ctro nic ally C o ntro lle d T ra ns m is s io n
A
5
R–W
B a ck – U p L ig ht
7
6
8
R–W
14 II2
R–W
B
J4
Junction
Connector
B
B–O
A2
A/T Shift Lever Position SW
Back–Up Light SW
3
R–W
(M/T)
B
R–W
(A/T)
2
RB
B1
Back–Up
Light SW
2 II1
E01
E03
E02
6 A
7 A
E1
R
7 B
11 C
ODLP
7 C
2
10 IK
2
W–B
W–B
R–B
17 3A
O/D OFF
W–B
A A
B B
C9
Combination
Meter
R10
Rear Combination
Light LH
6 ID
Back–Up
Back–Up
A A
J 4(A)
Junction
Connector
C A
J 4(A), J 5(B)
Junction
Connector
C A
10 II2
1
32
W–B
A10
O/D Main SW
9 IK
1
R12
Rear Combination
Light RH
R–B
B–O
LG
R–B
BR
W–B
W–B
W–B
W–B
LG–B
2
4
C
R–B
5 B
J10
Junction
Connector
R–B
28 B
C
C
13 II2
R–B
EC
ODMS
29 C
R–B
(A/T)
LG
LG–B
E 3(A), E 4(B), E 5(C), E 6(D)
Engine Control Module
5 II1
1
R–B
2
2
R–B
(M/T)
L
RL
4
LG
9 C
2L
8
LG–B
LG
LG–B
2004 COROLLA (EWD533U)
8 C
LL
3
A B
BR
W–B
A A
A
Right
Kick
Panel
W–B
W–B
W–B
C
W–B
W–B
A
A
W–B
IG
J7
Junction
Connector
EC
Left Side of the
Cylinder Head
EB
Left side of the
Cylinder Head
Lower Back Panel
BI
Under the Left
Quarter Pillar
BH
J 8(A), J 9(B)
Junction
Connector
LG
W–B
A B
11 3A
11 COROLLA
P ow er S ou rc e
C ruis e C o ntro l
* 1 : A/T
1
4
3
2
W
ACC
IG1 2
2
10A
ECU–IG
3
B
W
B–W
ST2
10A
GAUGE
I10
Ignition SW
6 IM
5 IL
10 IH
2 IG
4 IF
L
(*1)
5 3B
12 IF
9 IF
L
13 IA5
G–O
S9
Stop
Light SW
R–G
R–L
2
1
3
J4
Junction
Connector
MO
R–Y
RES/
ACC
19 3C
MC
L
SET/
COAST
20 3C
W–B
L
(A/T)
R–W
(A/T)
1 1A
CCS
16
G–O
R–G
R–L
4 IA5
SPD
GND
8
3
CRUISE
12
TC
MO
15
12 IA5
10
4
17 3C
B
B
V–W
MC
7
G–Y
14 II2
G–R
1
3
STP–
2
23
1
G–R
30A
MAIN
11
6
ECT
14 IA5
R–W
(A/T)
100A
ALT
L
2
OD
CCS
C14
Cruise Control
ECU
L
(M/T)
2
R–W
(A/T)
1
CRUISE
C9
Combination Meter
1 1C
PI
5
14
IDL
L
(M/T)
32
B–R
1 1D
C13
Cruise Control
Clutch SW
B–O
B–R
20 3B
D
4
P–B
1
2
2 IA4
13
+B
R–W
(M/T)
R–W
(M/T)
R–W
W–B
W–B
19 3B
22 3B
G–W
2
8 IK
3 II1
L
(*1)
5 IA5
3 iM
W
W
2004 COROLLA (EWD533U)
1 IB
B–W
B–W
15A
AM2
R–Y
(*1)
L–W
6 3B
25A
AM1
Data Link
Connector 3
<3–11>
IG2 6
Stop Light SW
<7–2>
5
Engine Control
Module<10–4>
1
Engine Control
Module<10–4>
1 IA
Engine Control
Module<3–7>
2 IF
IG1 Relay
5 AM2
B–Y
Combination Meter
<24–3>
1 AM1
W
M
CANCEL
B
3
C10
Combination SW
3
C4
Cruise Control
Actuator
4
W–B
W–B
L
(A/T)
14 4B
GND
ECC
4 II1
7
13 4B
W–B
12 4B
21 4B
W–B
3
IA5
W–B
W–B
Battery
A2
A/T Shift Lever
Position SW
D
FL MAIN
2. 0L
A
A
J7
Junction
Connector
IG
Right Kick Panel
W–B
J6
Junction
Connector
A
Behind the Combination
Meter
IE
12 COROLLA
P ow er S ou rc e
ABS
1
4
3
2
ACC
1 AM1
W
IG1 2
2 IF
IG2 6
B–W
W
5 AM2
B–Y
B–W
B
1 IA
5 IL
5
6 IM
IG1
Relay
I10
Ignition SW
3
8 IK
13 IC
11 IA6
15 IA5
4 IA6
BRL
SP1
RL+
RL–
RR+
RR–
6
5
4
3 IB1
W
R
Y
B
2 IB1
4 IB1
W
R
Y
B
1 BD1
A20
ABS Speed Sensor
Rear RH
1
2
1
2 BD1
W
B
W
B
Front Right Fender
1
2 BC1
2
A19
ABS Speed Sensor
Rear LH
EA
2
A4
ABS Speed Sensor
Front RH
1
R
W–R
17
STP
7
W
B
G
36
A3
ABS Speed Sensor
Front LH
W–B
W–R
37
28
16
PKB
5 IA6
2
R
Behind the Combination
Meter
27
1 BC1
Brake
ABS
IE
J6
Junction
Connector
R
16 IA5
W–B
W–B
Battery
A
26
1 IB1
2
A
FL+
13
W–B
18 4B
35
FL MAIN
2. 0L
1
W–B
C9
Combination Meter
B
21 4B
GND1
12
D/G
S1
Skid Control ECU with Actuator
FL–
FR+
FR–
32
Combination Meter
System<24–7>
1 1A
GND2
23
W–R
4
1
WA
30
R
B–O
R–W
W–B
100A ALT
30A MAIN
19
11
TC
W–G
16 3B
8
TS
G–W
2
10
+BM
R–W
24
L–R
+BS
P–B
2
IG1
GR
3
L
R
B–W
B–O
R–W
B–R
22 3B
1
1
12 IA6
Combination Meter
<24–3>
2 IG
L–R
4 IF
2 IA4
1
2
P–B
GR
1 1C
Stop Light SW
<7–2>
R–W
10A ECU–IG
10A GAUGE
B–R
30A ABS NO. 1
40A ABS NO. 2
1
1 1D
2
3 IM
W
1
2
15A AM2
25A AM1
1
2
W
R
L
2004 COROLLA (EWD533U)
1 IB
Data Link Connector 3
<3–10><3–11><3–12>
1
12 IF
Daytime Running Light
Relay<4–4>
ST2
(Cont. next page)
13 COROLLA
P o w er S o u rce
SRS
1
* 1 : w/ Side Airbag
4
3
2
B–W
5 AM2
IG2 6
B–W
A5
Airbag Sensor Front LH
S7
Side Airbag
Squib RH
ESL
SSL–
FSL
VUPL
ESR
1
2
1
2
1
2
3
4
1
2
3
4
Y–G
(*1)
Y–R
(*1)
Y–G
(*1)
GR–L
(*1)
L–W
(*1)
LG–B
(*1)
P–L
(*1)
GR
(*1)
L–Y
(*1)
LG
(*1)
P
(*1)
B
S6
Side Airbag
Squib LH
Y–R
(*1)
ST2
S10
Side Airbag Sensor LH
A6
Airbag Sensor Front RH
S11
Side Airbag Sensor RH
I10
Ignition SW
6 IM
SSR–
FSR
+SL
VUPR
5 A
SFL–
1 C
2 C
SFR+
12 A
SFR–
9 A 10 A
ESL
SSL–
FSL
7 A
VUPL
7 C
10 C
ESR
9 C 12 C
SSR–
FSR
15 B
VUPR
26 B
+SL
BR–W
SFL+
2 IA1
B–W
6 A
1 IA1
BR
RBE+
BR–W
4 IA1
W–R
Combination
Meter<19–3>
B–R
9 B
–SL
20 B
+SR
–SR
L–W
A12(A), A13(B), A14(C)
Airbag Sensor Assembly
B–R
LSP+
3 IG1
3 A
LSP–
4 A
LBE+
D+
11 A
D–
14 B
13 B
D2+
16 B
D2–
17 B
P+
P–
10 B
11 B
P2+
8 B
P2–
7 B
PL–
PL+
2 A
1 A
PR+
5 C
PR–
6 C
B
A15
Airbag Squib
(Front Passenger
Airbag Assembly)
3
4
P2+
P2–
1
2
P12
Pretensioner
Front LH
1
Y
Right Kick Panel
P–
Y–B
IG
J7
Junction
Connector
A16
Airbag Squib
(Steering Wheel Pad)
2
Y
W–B
A
P+
Y–B
Combination
Meter<19–3>
11 3A
1
D2–
Y–P
G–Y
W–B
W–B
15 3A
14
3A
3
D2+
Y–GR
1 IG1
4
Y–G
2 IG1
D–
Y–R
G–Y
W–B
W–B
4 IG1
Battery
3
2
Y–O
1
D+
Y–V
1
1
Y
Seat Position
Sensor
Y–B
B
FL MAIN
2. 0L
B7
Buckle SW RH
Occupant
Detection
Sensor
GND
Buckle
SW
Buckle SW
1 1A
VS
4
Occupant
Detection
Sensor
1
2
B6
Buckle SW LH
Seat Position Sensor
2
5
B
3
B
30A
MAIN
4
G
B
R–B
G–W
1
2
L–W
2004 COROLLA (EWD533U)
8 C
2 IA4
1
B–W
3 IA1
–SR
2
BR
B
+SR
1
W–R
15A
AM2
3 IM
–SL
2
2
P13
Pretensioner
Front RH
A
13 COROLLA (Cont’ d)
SRS
5
A
7
6
B–W
B–W
5 IL
8
II
8 IK
B–O
B–O
32
C9
Combination Meter
IG2
A12(A), A13(B), A14(C)
Airbag Sensor Assembly
E2
E1
28 B
27 B
2
II
5
SRS
II
B–Y
1
LA
3 B
L–R
7 II
SIL
12 B
P–B
3 II
TC
19 B
Y
10 II
GSW2
23 B
W–B
W–B
II
39
4 IF
6 IJ
4 IJ
5 IJ
1 IJ
W–B
10 IH
2
B–Y
2004 COROLLA (EWD533U)
5 B
B–Y
L–R
P–B
Y
15 4C
14 4C
21 4B
B–Y
W–B
W–B
Engine Control
Module<3–7>
13 4C
18 4B
W–B
Data Link Connector 3
<3–11><3–12>
J7
Junction
Connector
A
A
W–B
IG
Right Kick Panel
A
Behind the Combination
Meter
IE
J6
Junction
Connector
8
14 COROLLA
P ow er S ou rc e
A u to m atic G lare – R es ista n t
E C M irro r w ith C o mp a ss
W ip er an d W as he r
1
4
3
2
ACC
1 AM1
* 1 : w/ Moon Roof
* 2 : w/o Moon Roof
IG1 2
W
W
Wiper SW
W
B–Y
I10
Ignition SW
12 IF
B–L
+2
+1
+S
B1
INT1
INT2
EW
1 IA
3
HI
Off
B–L
2
LO
On
Wiper Relay
7
W
W
4
W–B
6
6 IA2
B
(*1)
7 IA2
I12
Inner
Mirror
5
L–W
1
9 IC
8 IA2
C11
Combination SW
6
L–W
7 IL
L–R
11 IC
9 IA2
7
B
(*2)
F5
Front Washer
Motor
L–Y
4 IF
9
L
2
8
L–Y
15A WASHER
25A WIPER
1 1C
100A ALT
2004 COROLLA (EWD533U)
10A GAUGE
5
INT
5 IE
IG1 Relay
1
OFF
Washer
SW
25A AM1
2 IF
1 IB
1 1D
+B
MIST
M
1
2
L
L
1 1A
L
W–B
(*1)
1
+1
3
L–W
4
+2
L–W
B
2
B
L–R
L
1 IE
S
W–B
10 IH
FL MAIN
2. 0L
M
IE
A
J6
Junction
Connector
Behind the Combination Meter
W–B
EA
5 E
Front Right Fender
F6
Front Wiper Motor
Behind the
Combination Meter
IE
W–B
W–B
A
Battery
A
J6
Junction
Connector
Right Kick Panel
IG
J7
Junction
Connector
(Cont. next page)
15 COROLLA
P ow e r S o urc e
* 1 : w/ Power Window
* 2 : w/o Power Window
* 3 : w/ TVIP System
D oo r L o ck C o ntro l
1
4
3
2
L–Y
B–Y
I11(A)
Integration Relay
W
ACC
1 AM1
IG1 2
IG
5
UL1
HAZ
R
G
R
L
10 IC1
W
L–Y
G
W(*3)
11 IC1
12 IJ2
3 IC1
8 IC1
9 IC1
IG
J6
Junction
Connector
IE
Behind the Combination
Meter
L
Right Kick Panel
A
R
A
J7
Junction
Connector
1
Detection
W–B
W–B
A
W
W–B
W–B
A
Battery
8
4
M
D8
Door Key Lock and Unlock SW Front LH
Door Lock Motor Front LH
Door Unlock Detection SW Front LH
7
W–B
B
6 IC1
W–B
10
Unlock
W–B
W–B
W–B
9
Lock
W–B
W–B
W–B
1 IJ2
D12
Door Lock Control
SW Front RH
Unlock
3
3 B (*2)
1 1A
FL MAIN
2. 0L
5
Lock
D10(B), D11(A)
Door Lock Control
SW Front LH
Unlock
Lock
100A ALT
1
L–Y
6
3 A (*1)
G
5 B
TVIP ECU
<16–4>
8 A
(*2) 6 B
L
L–W
L
L–W
(*1) 5 A
2
15A DOME
1
7 IJ2
L–Y(*3)
4 IC1
C
1 1C
1
2
G(*3)
W
W
5 IC1
1 1D
L
4 IF
L–W
10 IH
L
1 IB
B
W
18 4A
ACTD
1 A
W
21 4A
LSWD
19 A
L–Y
17 4A
G
20 4A
6 A
Turn Signal Flasher
Relay<5–4>
19 4A
L–W
7 IC
L–W
2004 COROLLA (EWD533U)
22 4A
UL3
25 A
8 A
25A DOOR
25A AM1
13 ID
3
L1
9 A
9
L
2
GND
10A GAUGE
12 IF
+B
1
L–Y
1
10
Y–B
1 IA
L–W
2 IF
IG1 Relay
W
L–Y
I10
Ignition SW
A
W–B
D
15 COROLLA (Cont’ d)
D oo r L o c k C o n trol
5
A
W ire le ss D o or L oc k C on tro l
8
7
6
L–Y
I11(A)
Integration Relay
L2
UL2
7 A
LSWP
18 A
ACT–
ACT+
3
2
PRG
7
8
8 IJ
8 ID
Unlock Warning SW
<19–4>
10 ID
8 BA1
2
3
5
RDA
PRG
+B
3 BA1
GND
4
D14
Door Lock Motor
Rear RH
4
W–B
M
1
L
1
R
W–B
D9
Door Key Lock and Unlock SW Front RH
Door Lock Motor Front RH
Door Unlock Detection SW Front RH
M
4
L
Detection
Unlock
Lock
8
1
R
7
L
5
R
W–R
L–B
G
6
D3
Door Control
Receiver
1
M
A B
D13
Door Lock Motor
Rear LH
J 8(A), J 9(B)
Junction
Connector
A A
D
* 3 : w/ TVIP System
* 4 : w/ Wireless Door Lock
W–B
Under the Left
Quarter Pillar
BH
L–Y
3 BB1
L
R
8 BB1
L
L
9 IJ2
G–Y
7 4A
L–R
5 4A
R
W–R
L–B
9 4A
8 IJ2
HORN Relay
<21–4>
8 4A 4 4A
L
3 IJ2
G–Y
(*3)
9 ID
Daytime Running Light
Relay<4–3>
10 4A
R
W–R
L–B
G
10 IJ2
RDA
4
L
6 4A
L–B
(*3)
L–B
G
2004 COROLLA (EWD533U)
11 IJ2
KSW
R
(*4)
20 ID
1 4A
C
HORN
10 A
TVIP ECU<16–4>
2 IK
R
3 4A
L
HRLY
11 A
W
(*3)
5 IK
W–R
(*3)
2 4A
TVSS
26 A
TVIP ECU
<16–4>
W–R
L–B
G
G
B
5 A
16 COROLLA
P ow e r S o urc e
T V IP S y s tem
1
R–B
R–B
R–B
ACC
IG1 2
B–Y
W
1 IA
1
5
IG1 Relay
12 IF
1 IH
2
3
E
6
8
21
9
IND
29
28
12
UL2
L2
16
38
37
LSWP
LSWD
CTY
19
DSWL
35
IOUT
GND
MIC
GMIC
4
5
G3
Glass Breakage
Sensor ECU
W–B
R–W
B
W–B
W
(Shielded)
1 1A
19 3A
3
A
J6
Junction
Connector
IE
Behind the Combination Meter
1
Microphone
2
11 3A
W–B
W–B
Battery
4
Security
FL MAIN
2. 0L
S4
Security Indicator
A
W–B
J7
Junction
Connector
A
Right Kick Panel
IG
Luggage Compartment
Light SW<9–4>
S+B
R–W
TRIG
R–W
R–W
11 ID2
Door Courtesy SW
<9–3>
6
Door Key Lock SW Front LH
<15–3>
3
Unlock Warning SW
<19–4>
1
UL3
DSWD
W–B
1
8
17
40
R
G
L–B
R–W
W–B
18
IRSG
KSW
T3
TVIP ECU
25
W–B
L
R–B
B–W
2
100A
ALT
L–Y
DMLP
W
W–B
W–B
W
1 1C
5
+B1
IOUT
11
SRLY
W–R
Y–B
HAZD
2
IG
L–B
R
HEAD
R–B
B–W
B–W
10
B–W
W
G–Y
HORN
9 IF
1 IB
W
2004 COROLLA (EWD533U)
10 IH
R–W
25A
AM1
4 IF
1 1D
Integration Relay
<9–8><15–3><15–5><15–7>
B–R
10A
ECU–B
10A
ECU–IG
Starter Cut Relay
<1–1>
2 IF
HORN Relay
<21–4>
W
R–B
I10
Ignition SW
Turn Signal Flasher Relay
<5–4>
1 AM1
Daytime Running Light Relay
<4–3>
W
4
3
2
17 COROLLA
P o w e r S o urc e
P ow er W in do w
1
4
3
2
W
W
1 IB
IG1 2
25A AM1
6
7
B
B
D11
Power Window Master SW
Front RH
Rear LH
Rear RH
Front LH
B–Y
I10
Ignition SW
B
12 IF
B
ACC
W 1 AM1
2
1 IC1
B
3
1
B
1
30A POWER
5
IG1
Relay
2 IF
Normal
Lock
Window Lock
SW
Down
1 IA
2 IC3
2
B
B
10A GAUGE
DD
PU
9
PD
18
16
5 IC3
L–R
R–B
6 IC3
RRD
10
L–B
7 IC3
RRU
13
R–G
1 IC3
RLD
12
L–W
G–R
W
W
P/W
Relay
RLU
15
G
5
DU
4
Y
W–B
1
E
3
W–B
2004 COROLLA (EWD533U)
E
1
4 IC3
3 IC3
1 1C 1 1D
2
6 4B
3
3 ID1
B
U
D
3
Down
1
G
4
L–R
M
SD
Y
5
P10
Power Window
Motor Rear LH
2
SU
Up
1
P7
Power Window
Control SW Rear RH
D
5 BB1
R–B
B
5
G
5
U
3
4 BB1
4 B
Down
M
L–R
4
P9
Power Window
Motor Front RH
2 BB1
SD
Y
5
2
SU
Up
M
P6
Power Window
Control SW Rear LH
4
P8
Power Window
Motor Front LH
1
G
IE
D
Down
Behind the Combination
Meter
U
3
Y
Right Kick Panel
J6
Junction
Connector
A
5
4 B
SD
Up
W–B
IG
P5
Power Window
Control SW Front RH
A
2
SU
5 BA1
R–B
G
Y
W–B
W–B
J7
Junction
Connector
A
4 B
4 BA1
B
5
6 IC1
2 BA1
L–W
G–R
B
FL MAIN
2. 0L
5 IJ2
B
4 IJ2
L–B
B
W–B
6 IJ2
R–G
B
B
B
L–W
8
4B
G–R
10
4B
Battery
4 ID1
B
B
W–B
W–B
1
1 1A
L–R
100A ALT
R–B
B
L–B
B
R–G
7 IG
L–W
18 ID
G–R
4 IF
W–B
10 IH
9 4B
7
4B
2
5
M
4
P11
Power Window
Motor Rear RH
18 COROLLA
P ow er S ou rc e
M oo n R o of
1
4
3
2
ACC
1 AM1
S hift L o ck
M2
Moon Roof Control Relay and SW
IG1 2
B–W
W
B–Y
W
I10
Ignition SW
12 IF
1
5
9 IF
Up
5 3B
Down
2
1
7 3B
P/W
Relay
1 IB
3
2
IG
2
1 1C
4 IF
10 IH
1 IE
LS2
MTR+
6
7
4
MTR– GND
5
8
2 IE
1
1
5
3
E
IG
STP
W–B
6
W–B
R
5
G
B
R–L
G–W
W–B
W–B
100A ALT
W–B
2
LS1
G–W
1 1D
B–W
W
W
2004 COROLLA (EWD533U)
5
Stop Light SW
<7–2>
Close
10A GAUGE
3
30A POWER
IG1
Relay
2
Open
1
B–W
1 IA
10A ECU–IG
25A
AM1
2 IF
2
1
16 3A
LS2
LS1
1 1A
B
M
4
11 3A
SLS+
W–B
Shift Lock
Solenoid
W–B
S5
Shift Lock
Control ECU
Battery
A
IG
A
J7
Junction
Connector
Right Kick Panel
Right Kick
Panel
J7
Junction
Connector
W–B
IE
W–B
Behind the Combination
Meter
J6
Junction
Connector
W–B
A
SLS–
W–B
W–B
M3
Moon Roof Motor and Limit SW
3
W–B
FL MAIN
2. 0L
IG
19 COROLLA
P ow er S ou rc e
Ligh t
R e mind e r B uz z e r
S e a t B elt W a rn in g
1
K e y R e m in de r B u zz e r
4
3
2
G–W
(*4)
G–W
(*5)
G–W
(*4)
3
13
ACC
G–W
(*5)
1 AM1
IG1 2
B–Y
2
Tail
5
2
3
Buzzer
4 IF
C9
Combination Meter
18
25A
AM1
10 IH
Seat
Belt
2 IG
7 IC
16 3B
11 3B
6
2
17
12
1
2
16
2
15 4A
J3
Junction
Connector
18 4B
L–B
(*1)
2
C
U1
Unlock
Warning SW
21 4B
W–B
1
A
A
J7
Junction
Connector
IG
Right Kick Panel
W–B
Left Side of the
Cylinder Head
EB
W–B
W–B
BR
Battery
L–B
(*1)
C
L
FL MAIN
2. 0L
16 4A
L–B
(*3)
II2
BR
Buckle SW LH
<13–2>
B
Interior Light
System<9–3>
3
5
Buckle SW RH
<13–1>
F7
Front Passenger Seat
Belt Warning Light
PASSENGER
1 1A
14 4A
L–B
(*1)
1
1
L–B
(*1)
L–B
(*2)
W–B
BR
G–Y
L–W
100A
ALT
L
R–W
15A
DOME
1
11
TVIP ECU<16–4>
1 1C
Integration Relay
<15–8>
22 3B
R–W
R–W
W–B
1 1D
W
W
1
W–B
1 IB
L–W
2004 COROLLA (EWD533U)
15A
TAIL
5
3
G
(*4)
G
10A GAUGE
IG1 Relay
4 IL
4
1 : w/ Door Lock Control
2 : w/o Door Lock Control
3 : w/ TVIP System
4 : USA
5 : Canada
Taillight System
<6–1>
G
(*5)
1
12 IF
L–W
1 IA
*
*
*
*
*
5
3
10
R–W
W
L–W
7 IH
2 IF
3
3
TAIL
Relay
Head
20 4C
I10
Ignition SW
T
OFF
W
G–W
(*4)
W
E
Light
Control SW
C12
Combination SW
L–W
19 4C
1
A
J6
Junction
Connector
A
IE
Behind the Combination
Meter
20 COROLLA
P ow e r S o urc e
R e m ote C on trol M irro r
1
ACC 3
1 AM1
4
3
2
L–R
GR
IG1
6 IF
R6
Remote Control Mirror SW
8
8 3A
B
W
I10
Ignition SW
15A
CIG
12 IF
8 IF
Left
Right
Up
Down
Left
Right
Left
Right
Left/
Up
Right/
Down
Operation
SW
10 3A
25A
AM1
Select
SW
GR
HL
HR
5
2
VL
4
VR
E
6
7
W–B
BR–W
R–W
L
1 1C
M+
3
LG
R
W
16 3C
2
14 3C
10 IC2
1
8 IC2
21 4B
9 IC2
BR–W
M+
2
9 IJ1
BR–W
M
BR–W
M+
2
M
MV
BR–W
M
3
MH
R18
Remote Control Mirror RH
M
R17
Remote Control Mirror LH
B
FL MAIN
2. 0L
1
MV
R–W
3
MH
15 3C
8 IJ1
R
L
1
10 IJ1
LG
1 1A
22 4B
R
LG
100A ALT
2004 COROLLA (EWD533U)
1 IB
BR–W
W–B
Battery
BR–W
A
BR–W
IE
J6
Junction
Connector
Behind the Combination
Meter
21 COROLLA
P o w er S ou rc e
C iga rette L igh ter
1
C loc k
4
*
*
*
*
*
L–R
L
GR
IG1
1 : w/ Wireless Door Lock
2 : w/o Wireless Door Lock
3 : TVIP System
4 : w/ Cigarette Lighter
5 : w/o Cigarette Lighter
B–W
ACC 3
H orn
3
2
1 AM1
B–W
L–W
L
L–W
W
4 IL
P o w e r O utle t
6 IH
20 4C
I10
Ignition SW
12 IF
6 IF
3
1
3
2
1
1
3
5
16 4C
L–W
2
Integration
Relay<15–7>
18 IA5
B
L–Y
W–B
W–B
5 3A
G
1 1C
1
G–Y
GR
GR
W
L–W
3
6 3A
3
1
3
C7
Clock
10 3A
1
2
5
1
1 IB
B–W
1
9 3A
12 3A
2
18 3A
P4
Power
Outlet
(Rear)
1
G–Y
(*1)
W–B
W–B
(*5)
Behind the Combination
Meter
A
J7
Junction
Connector
Right Kick Panel
IG
TVIP ECU<16–3>
W–B
A
J6
Junction
Connector
J6
Junction
Connector
A
IE
1
Horn
2 IF1
W–B
IE
G–Y
(*1)
G–Y
(*3)
W–B
(*4)
FL MAIN
2. 0L
A
12 4A
1
W–B
B
Battery
13 4A
2
C5
Power
Outlet
(Front)
11 3A
11 4A
G–Y
(*2)
1
L–Y
1 1A
C5
Cigarette
Lighter
GR
(*5)
2
TAIL Relay(USA)
Combination SW(Canada)
<8–4>
1
GR
(*4)
1
100A ALT
15A DOME
1
GR
(*5)
H6
Horn
2
2
G–Y
(*1)
G–Y
(*1)
1 IF1
2
10A HORN
2004 COROLLA (EWD533U)
GR
1
3
4
8 IF
1
HORN
Relay
P–POINT
Relay
15A CIG
25A AM1
15A P/POINT
7 IC
Behind the Combination Meter
C10
Combination
SW
22 COROLLA
P ow e r S o urc e
R ea r W ind ow D efo gg e r
1
4
3
2
Engine Control
Module<3–6>
ACC
1 AM1
IG1 2
B
W
12 IF
W
B–Y
W
I10
Ignition SW
2 IF
1 IA
1
5
25A
AM1
1
3
40A
DEFOG
2
2
4 IF
10 IH
1
3
2 IG
10 IL
B
1 1C
B
1 1D
5
DEF
Relay
W
10A
GAUGE
2
8 ID1
B
2
Noise
Filter
1 IB
W
2
100A
ALT
B
R–W
2004 COROLLA (EWD533U)
IG1
Relay
4 IM
10A M–HTR/DEF I–UP
1
8 IL
4
IG
5
E
1 B
2
W–B
W–B
B
R–W
N2
Noise Filter
(Rear Window Defogger)
R5
Rear Window
Defogger SW
1 1A
14 3B
1
1 A
D
R15(A), R16(B)
Rear Window Defogger
22 3B
1
FL MAIN
2. 0L
B
W–B
Battery
Behind the Combination
Meter
IE
J6
Junction
Connector
A
A
IG
J7
Junction
Connector
Right Kick Panel
IE
Behind the Combination
Meter
BJ
Under the Right
Quarter Pillar
23 COROLLA
P ow e r S o urc e
R a dio an d P lay er
1
4
3
2
* 1 : w/ Tweeter
* 2 : w/o Tweeter
ACC 3
1 AM1
L–R
IG1
6 IF
IG2
15A CIG
W
L–W
AM2
ST2
I10
Ignition SW
12 IF
8 IF
10 3A
20 4C
3 A
1 1C
ACC
2
L–W
GR
W
1
17 4C
B
7 3A
8 A
10 A
ANT+
R 3(A), R 4(B)
Radio and Player
4 A
5 B
ILL+
ILL–
+B
2
GND
100A ALT
15A DOME
FL+
7 A
FL–
2 A
6 B
6 ID1
RR–
3 B
W
2 ID1
1 1A
RR+
1 B
R
3 IJ1
Y
B
4 IJ1
RL–
2 B
L
3 IC2
RL+
5 A
LG
4 IC2
FR–
1 A
V
1
FR+
6 A
P
1
L–W
GR
25A AM1
1
1 IB
L–W
2004 COROLLA (EWD533U)
7 IC
Illumination
System<8–2>
A17
Antenna Amplifier
4 IL
1 ID1
5 ID1
L
(*1)
LG
(*1)
V
(*1)
P
(*1)
B
T4
Tweeter LH
T5
Tweeter RH
1
1
2
2
IF
F8
Front Door
Speaker LH
F9
Front Door
Speaker RH
L
(*2)
2
L
(*1)
1
Battery
Behind the Combination
Meter
1
2 BF1
L
(*1)
LG
(*1)
LG
(*1)
LG
(*2)
V
(*2)
V
(*1)
2
L
(*1)
LG
(*1)
P
(*1)
P
(*2)
BR
1
1 BF1
2
R13
Rear Door
Speaker LH
W
2 BE1
R
1 BE1
Y
B
FL MAIN
2. 0L
1
2
R14
Rear Door
Speaker RH
20 4C
Headlight
System<4–7>
R–W
L–W
B
R–W
Temp.
Fuel
Tachometer
Speedometer
15A AM2
Door
Fuel
B–Y
W
R–W
R–W
(w/o ABS)
High Beam
B–R
B–R
W
W
W–G
Y
BR
W–G
(w/ ABS)
BR
B
V–W
Y–R
R–W
(w/o ABS)
Y
BR
BR
V–W
Headlight System
<4–7>
Interior Light
System<9–3>
Key Reminder Buzzer
Light Reminder
Buzzer<19–3>
Engine Control
Module<3–7>
V–W
W–G
(w/o ABS)
W–G
(w/ ABS)
Engine Control
Module<3–10>
Key Reminder Buzzer
Light Reminder Buzzer
<19–4>
F10
Fuel Sender
10A GAUGE
B
BR
Cruise Control
ECU<11–4>
Engine Control
Module<3–10>
BR
(w/o ABS)
W–G
(w/o ABS)
R–W
(w/o ABS)
FL MAIN
2. 0L
J6
Junction
Connector
W–B
V1
Vehicle Speed
Sensor
(Combination
Meter)
Skid Control ECU
with Actuator
<12–4>
BR
(w/o ABS)
J 2(A), J 3(B)
Junction Connector
2
J 4(A), J 5(B)
Junction Connector
IG1 Relay
30A MAIN
100A ALT
15A DOME
C B
C B
Left Side of the
Cylinder Head
EB
IE
Behind the Combination
Meter
W–B
A
2
Buzzer
25A AM1
L–W
1 1A
A
B–O
B
W–B
A
Battery
C B
3
3
1
C A
5 ID2
13 ID2
5 II2
Seat Belt Warning
System<19–3>
14 IA6
II2
3
4 IF
7 4C
9 4C
2
B A
7
22
1
11
12
16
19
9
10
8
4
8
IK
B–W
ODO/TRIP
Out Side Temp.
ODO/TRIP
16 3B
4
1
1
1
5
B–Y
B–W
W
L–W
ST2
17
20
13
L–W
ACC
4
C9
Combination Meter
I10
Ignition SW
8 4C
1
2
C om b in ation M e ter
P o w er S o u rce
5
IL
3
2
1
W–G
(w/o ABS)
2
1 IA
2 IG
2 IF
2
14 II2
1
1 1D
1 1C
1
2004 COROLLA (EWD533U)
2 IA4
19 4C
IG2 6
5 AM2
20 3B
22 3B
3 IM
1 IB
7 IC
IG1 2
1 AM1
5
14
6 IM
12 IF
4 IL
(Cont. next page)
24 COROLLA
24 COROLLA (Cont’ d)
C o m bina tio n M ete r
B–O
Illumination
System<8–4>
Turn Signal and
Hazard Warning
Light System<5–3>
Seat Belt Warning
System<19–3>
SRS
W
R–W
R
W–R
Illumination
System<8–4>
W
R–W
(w/ ABS)
(w/ ABS)
W–B
(w/o ABS)
W–B
(w/o ABS)
(w/ ABS)
Cruise Control System
<11–1>
Daytime Running Light Relay
<4–4>
O1
Oil Pressure SW
W–B
W–B
(w/o ABS)
R–W
(w/o ABS)
W–B
W–B
(Canada)
W1
Washer Level Sensor
ABS System
<12–2>
ABS System
<12–2>
B2
Brake Fluid Level
Warning SW
15 IA5
A7
Ambient Temp.
Sensor
Electronically
Controlled Transmission
System<10–6>
Engine Control System
<3–3>
L–W
(Canada)
Charging System
<2–2>
2
Oil Pressure
Illumination
Brake
ABS
CRUISE
L–W
(Canada)
W–B
B–L
B
ED
Front Left
Suspension Tower
EA
Front Right
Fender
Front Right
Fender
EA
O/D OFF
Malfunction
Indicator Lamp
Washer Level
Charge
Turn RH
Turn LH
Seat
Belt
B–L
B
18 4B
2
1
R–W
(w/o ABS)
B
B
R–W
(w/o ABS)
1
B
1
21 4B
J1
Junction
Connector
R–W
(w/o ABS)
1
II2
3
SRS System
<13–6>
17 IA5
16 IA5
5 IA6
13 IA6
10 IA6
3 IA6
21
28
39
35
36
37
23
3
33
8
7
6
5
18
C9
Combination Meter
32
25
24
6
34
31
2
30
26
2004 COROLLA (EWD533U)
2
W–B
B
B–O
A
25 COROLLA
P ow e r S ou rc e
R ad ia tor F a n
1
4
3
2
ACC
IG1 2
B–W
1 AM1
B–W
W–R
B–W
1
W
I10
Ignition SW
1
1
5
1
1
B–W
B–Y
FAN
NO. 1
Relay
12 IF
3
25A AM1
2
LG
B–R
LG–B
7 IA5
3
2
Single
1
IA
2
2
100A ALT
R2
Radiator Fan Resistor
5
L–W
2
W–B
3
P2
Pressure SW
1
LG–B
LG–B
W
1
LG–B
IG1 Relay
30A RDI FAN
1
1D
1
6 IA5
LG
2
1
5
1
1
10A ECU–IG
W
1 1C
1
4
13 IC
1 IB
B–W
2004 COROLLA (EWD533U)
2 IF
FAN
NO. 2
Relay
2
1
1
3
1
4 IF
E6
Engine Control
Module
W–B
B
FAN
CF
6
LG
B–R
FL MAIN
2. 0L
W–B
7
W–B
W–B
1
1 1A
2
M
Behind the Combination
Meter
1
W–R
Front Right
Fender
EA
W–B
IE
J6
Junction
Connector
R1
Radiator
Fan Motor
W–B
Battery
A
ED
Front Left
Suspension Tower
26 COROLLA
P o w e r S o urc e
A ir C on ditio ning
1
4
3
2
L–W
L–W
ACC
IG1 2
B–Y
1 IA
7 IF
FRS
GND
+IG
REC
Off
5
FOOT
F/D
DEF
On
2
IG1
Relay
12 IF
2
3
1
3
FRS
6
REC
7
GND
AIND
A/C
4
3
8
4 EA1
B–W
1
B
B–W
Y
G–W
R–W
7 IA6
Y–B
18 3B
22 3B
A1
A/C Magnetic Clutch
W–B
L–W
5 IM
G–W
R–W
2 IM
R–W
W
W
B4
Blower Resistor
2
2
12 3B
13 3B
LO
OFF
11 3A
A
Right Kick
Panel
W–B
Behind the Combination
Meter
A
W–B
W–B
IE
B5
Blower SW
W–B
Battery
W–B
W–B
J6
Junction
Connector
B
4
A
1
3 IH1
A
IG
J7
Junction
Connector
BR
Front Right
Fender
F
BR
6
5
A
BR
2
M1
A/C Thermistor
L–W
1
M2
P2
Pressure SW
FL MAIN
2. 0L
4
HI
1
Dual
B
J3
Junction
Connector
20 3A
B
R
3
B
4 IH1
Y
3
28 A
F
5
R–W
B
3
L–W
B–W
3
E2
E 3(A), E 5(C)
Engine Control
Module
W–B
B–W
1
ACMG
THR
8 EA1
M
2 C
A/CS
B–L
5 IH1
31 C
32 C
Y
6 IH1
PRS
13 A
FRS
2 IH1
W–B
1 IH1
4
R
HTR Relay
4
2
L–B
5
3
B–W
M
REC
1
B3
Blower Motor
B–W
R–W
3
2
2
1 1A
33 C
ACLD
A11
Air Inlet Control
Servo Motor
1
3
1
1
B
R–W
W–B
100A ALT
2004 COROLLA (EWD533U)
2 IG
Y–B
B–W
10A A/C
40A HEATER
10A GAUGE
25A AM1
IG
9
2
1 1C
2
1
1 IB
1 1D
1
B
1
4 IF
1
M/G CLT
Relay
FRS
A/C SW
5
REC
1
B/L
B
Air Inlet
Control SW
W
1
3 IC
FACE
Defroster Mode
Detection SW
2 IF
I10
Ignition SW
A8
A/C SW
Air Inlet Control SW
Defroster Mode Detection SW
B
W
L–W
1 AM1
EA
II2
27 COROLLA
P o w e r S o urc e
H ea ter
1
4
3
2
A8
Air Inlet Control SW
ACC
IG1 2
B–Y
W
1 IA
2 IF
W
I10
Ignition SW
1
FRS
Air Inlet
Control SW
1 AM1
REC
GND
+IG
FRS
REC
5
IG1
Relay
12 IF
2
3
1
IG
FRS
REC
6
7
GND
8
W–B
G–W
R–W
L–W
40A HEATER
10A GAUGE
25A AM1
9
4 IF
2 IG
2 IM
R–W
W
W
R–W
1 1C
13 3B
B
11 3A
M
1 IH1
2 IH1
6 IH1
W–B
HTR Relay
4
W–B
5
4
R
2
1 1A
2
L–B
2
3
B–W
3
B3
Blower Motor
B–W
M
5 IH1
5
B–W
B
3
R–W
3
3
L–W
B–W
1
R
3
B
FL MAIN
2. 0L
L–W
4
1
2
HI
M2
M1
LO
OFF
6
5
Behind the Combination
Meter
A
W–B
A
W–B
IE
B5
Blower SW
W–B
J6
Junction
Connector
W–B
W–B
A
Battery
20 3A
FRS
R–W
W–B
3
1
1
1
R–W
REC
12 3B
1
A11
Air Inlet Control
Servo Motor
2
2
B4
Blower Resistor
W–B
18 3B
B–W
22 3B
1 1D
100A ALT
2004 COROLLA (EWD533U)
2
1 IB
A
A
IG
Right Kick
Panel
J7
Junction
Connector