05–100
DIAGNOSTICS
–
EFI SYSTEM (2TR–FE)
05MZ5–01
DTC
P0351/14 IGNITION COIL ”A” PRIMARY/SECONDARY
CIRCUIT
DTC
P0352/15 IGNITION COIL ”B” PRIMARY/SECONDARY
CIRCUIT
DTC
P0353/14 IGNITION COIL ”C” PRIMARY/SECONDARY
CIRCUIT
DTC
P0354/15 IGNITION COIL ”D” PRIMARY/SECONDARY
CIRCUIT
CIRCUIT DESCRIPTION
HINT:
S
S
S
S
S
These DTCs indicate a malfunction related to the primary circuit.
If DTC P0351 is displayed, check No.1 ignition coil with igniter circuit.
If DTC P0352 is displayed, check No.2 ignition coil with igniter circuit.
If DTC P0353 is displayed, check No.3 ignition coil with igniter circuit.
If DTC P0354 is displayed, check No.4 ignition coil with igniter circuit.
A Direct Ignition System (DIS) is used on this vehicle.
The DIS is a 1–cylinder ignition system which ignites one cylinder with one ignition coil. In the 1–cylinder
ignition system, one spark plug is connected to the end of the secondary winding. High–voltage is generated
in the secondary winding and is applied directly to the spark plug. The spark of the spark plug passes from
the center electrode to the ground electrode.
The ECM determines the ignition timing and transmits the ignition (IGT) signals for each cylinder. Using the
IGT signals, the ECM turns ON and OFF the power transistor inside the igniter, which switches ON and OFF
a current to the primary coil. When the current to the primary coil is cut off, high–voltage is generated in the
secondary coil and this voltage is applied to the spark plugs to create sparks inside the cylinders. As the ECM
cuts the current to the primary coil, the igniter sends back the ignition confirmation (IGF) signal to the ECM.
05–101
DIAGNOSTICS
–
EFI SYSTEM (2TR–FE)
From Battery
ECM
Igniter
No.1 Ignition
Coil with Igniter
IGT1
Crankshaft
Position
Sensor
No.1 Spark Plug
IGF
Ignition Coil
Camshaft
Position
Sensor
Other Sensors
ECT Sensor
S MAF Meter
S TP Sensor, etc.
IGT2
No.2 Ignition
Coil with Igniter
No.2 Spark Plug
IGT3
No.3 Ignition
Coil with Igniter
No.3 Spark Plug
IGT4
No.4 Ignition
Coil with Igniter
No.4 Spark Plug
S
TACH
To Tachometer
A85099
DTC No.
P0351/14
P0352/15
P0353/14
P0354/15
DTC Detection Condition
No IGF signal to ECM while engine is running
Trouble Area
S Ignition system
S Open or short in IGF or IGT1 to 4 circuit from ignition coil with
igniter to ECM
S No.1 to No.4 ignition coil with igniter
S ECM
Reference: Inspection using the oscilloscope.
While cranking or idling, check the waveform between terminals
IGT1 to IGT4 and E1, and IGF and E1 of the E14 ECM connector.
CH1
(IGT1 to 4)
GND
Item
Contents
CH2
(IGF)
GND
Terminal
CH1: IGT1, IGT2, IGT3, IGT4 – E1
CH2: IGF1 – E1
Equipment Setting
2 V/Division, 20 ms/Division
Condition
While cranking or idling
A63956
05–102
DIAGNOSTICS
–
EFI SYSTEM (2TR–FE)
WIRING DIAGRAM
I14
Ignition Switch
6
7
AM2
2 C5
IM4 IC4
(LHD)(RHD)
B–R
IG2
13
IL3
B–R
B–R
B–R
ECM
B–R
W–R
1
B–R
B–R
I1
Ignition Coil and
Igniter No.1
3
R–Y
4
W–B
B–R
Engine
Room
R/B
2
B–R
N2
Noise
Filter
AM2
4
I2
Ignition Coil
and
Igniter No.2
G–R
3
R–L
IGT1
16
E11 IGT2
G–R
2
W–B
1
2
W–B
1
2
17
E11
1
2
B–R
1
W–B
4
I3
Ignition Coil
and
Igniter No.3
15
E11 IGT3
3 G–B
2
G–R
C
2
C
C
J11
J/C
W–B
C
B
W–B
B–R
FL
MAIN
W–B
W–B
1
4
C
3
I4
Ignition Coil
and
2
Igniter No.4
G–R
G–W
14
E11 IGT4
G–R
23
E11
IGF
W–B
Battery
EY
A86054
05–103
DIAGNOSTICS
–
EFI SYSTEM (2TR–FE)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester II. Freeze frame data record the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, if the engine was warmed up or not, if the air–fuel ratio was lean or rich, and other data
from the time the malfunction occurred.
1
PERFORM SIMULATION TEST
(a) Clear DTCs (see page 05–18).
(b) Shuffle arrangement of the ignition coils with igniters.
NOTICE:
Do not shuffle the connectors.
(c) Perform the simulation test.
Result:
Display (DTC Output)
Proceed To
Same DTCs (that have been erased)
A
Other DTCs
B
B
REPLACE IGNITION COIL ASSY
A
2
INSPECT ECM(IGT1, IGT2, IGT3, IGT4 AND IGF1 SIGNAL)
(a)
IGT1 (+) IGT3 (+)
IG2 T(+)
IGT4 (+)
E1
E11
IGF
ECM Connector
A18294
Inspect the ECM waveform using the oscilloscope.
(1) While cranking or idling, check the waveform between the terminals of the E11 ECM connector.
OK:
Tester Connection
Specified Condition
IGT1 (E11–17) – E1 (E11–3)
Correct waveform is as shown on the left
IGT2 (E11–16) – E1 (E11–3)
Correct waveform is as shown on the left
IGT3 (E11–15) – E1 (E11–3)
Correct waveform is as shown on the left
IGT4 (E11–14) – E1 (E11–3)
Correct waveform is as shown on the left
IGF (E11–23) – E1 (E11–3)
Correct waveform is as shown on the left
2 V/
Division
CH1
(IGT1 to 4)
GND
CH2
(IGF1)
GND
20 ms/Division
A63956
NG
OK
REPLACE ECM (See page 10–12)
05–104
DIAGNOSTICS
3
–
EFI SYSTEM (2TR–FE)
CHECK HARNESS AND CONNECTOR(IGNITION COIL ASSY – ECM)
(a)
Wire Harness Side:
Ignition Coil with Igniter Connector
I1
I2
I3
I4
(b)
(c)
Disconnect the I1, I2, I3 and/or I4 ignition coil with igniter
connector(s).
Disconnect the E11 ECM connector.
Measure the resistance according to the value(s) in the
table below.
Standard (Check for open):
Front View
A54393
Tester Connection
Specified Condition
Ignition coil (I1–2) – IGF (E11–23)
Below 1 Ω
Ignition coil (I2–2) – IGF (E11–23)
Below 1 Ω
Ignition coil (I3–2) – IGF (E11–23)
Below 1 Ω
Ignition coil (I4–2) – IGF (E11–23)
Below 1 Ω
Standard (Check for open):
E11
IGT1
IGT2
IGT3
IGT4
IGF
Tester Connection
Specified Condition
Ignition coil (I1–3) – IGT1 (E11–17)
Below 1 Ω
Ignition coil (I2–3) – IGT2 (E11–16)
Below 1 Ω
Ignition coil (I3–3) – IGT3 (E11–15)
Below 1 Ω
Ignition coil (I4–3) – IGT4 (E11–14)
Below 1 Ω
Standard (Check for short):
ECM Connector
Tester Connection
Specified Condition
Ignition coil (I1–2) or IGF (E11–23) – Body ground
10 kΩ or higher
Ignition coil (I2–2) or IGF (E11–23) – Body ground
10 kΩ or higher
Ignition coil (I3–2) or IGF (E11–23) – Body ground
10 kΩ or higher
Ignition coil (I4–2) or IGF (E11–23) – Body ground
10 kΩ or higher
A80458
Standard (Check for short):
(d)
(e)
Tester Connection
Specified Condition
Ignition coil (I1–3) or IGT1 (E11–17) – Body ground
10 kΩ or higher
Ignition coil (I2–3) or IGT2 (E11–16) – Body ground
10 kΩ or higher
Ignition coil (I3–3) or IGT3 (E11–15) – Body ground
10 kΩ or higher
Ignition coil (I4–3) or IGT4 (E11–14) – Body ground
10 kΩ or higher
Reconnect the ECM connector.
Reconnect the ignition coil with igniter connector(s).
NG
OK
REPAIR OR
CONNECTOR
REPLACE
HARNESS
OR
05–105
DIAGNOSTICS
4
–
EFI SYSTEM (2TR–FE)
INSPECT IGNITION COIL ASSY(POWER SOURCE)
(a)
Wire Harness Side:
Ignition Coil with Igniter Connector
I1
I2
I3
I4
+B (+) GND (–)
Front View
(b)
Disconnect the I1, I2, I3 and/or I4 ignition coil with igniter
connector(s).
Measure the resistance according to the value(s) in the
table below.
Standard (Check for open):
A54393
(c)
(d)
(e)
Specified Condition
GND (I1–4) – Body ground
Below 1 Ω
GND (I2–4) – Body ground
Below 1 Ω
GND (I3–4) – Body ground
Below 1 Ω
GND (I4–4) – Body ground
Below 1 Ω
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table
below.
Standard:
Tester Connection
Specified Condition
+B (I1–1) – GND (I1–4)
9 to 14 V
+B (I2–1) – GND (I2–4)
9 to 14 V
+B (I3–1) – GND (I3–4)
9 to 14 V
+B (I4–1) – GND (I4–4)
9 to 14 V
Reconnect the ignition coil with igniter connector(s).
OK
NG
Tester Connection
REPLACE IGNITION COIL ASSY
05–106
DIAGNOSTICS
5
–
EFI SYSTEM (2TR–FE)
CHECK HARNESS AND CONNECTOR(IGNITION COIL ASSY – IGNITION SWITCH)
(a)
Wire Harness Side:
(b)
(c)
Ignition Coil with Igniter Connector
I1
I2
I3
I4
+B
Front View
Disconnect the I1, I2, I3 and/or I4 ignition coil with igniter
connector(s).
Disconnect the I14 ignition switch connector.
Measure the resistance according to the value(s) in the
table below.
Standard (Check for open):
A54393
Wire Harness Side: Ignition Switch
Tester Connection
Specified Condition
Ignition coil (I1–1) – IG2 (I14–6)
Below 1 Ω
Ignition coil (I2–1) – IG2 (I14–6)
Below 1 Ω
Ignition coil (I3–1) – IG2 (I14–6)
Below 1 Ω
Ignition coil (I4–1) – IG2 (I14–6)
Below 1 Ω
Standard (Check for short):
I14
1
5
2
6
3
7
4
8
IG2
A61075
(d)
(e)
Tester Connection
Specified Condition
Ignition coil (I1–1) or IG2 (I14–6) – Body ground
10 kΩ or higher
Ignition coil (I2–1) or IG2 (I14–6) – Body ground
10 kΩ or higher
Ignition coil (I3–1) or IG2 (I14–6) – Body ground
10 kΩ or higher
Ignition coil (I4–1) or IG2 (I14–6) – Body ground
10 kΩ or higher
Reconnect the ignition coil with igniter connector(s).
Reconnect the ignition switch connector.
NG
OK
REPLACE IGNITION COIL ASSY
REPAIR OR
CONNECTOR
REPLACE
HARNESS
OR