ES–208
ES
2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
DTC
P0351
Ignition Coil "A" Primary / Secondary Circuit
DTC
P0352
Ignition Coil "B" Primary / Secondary Circuit
DTC
P0353
Ignition Coil "C" Primary / Secondary Circuit
DTC
P0354
Ignition Coil "D" Primary / Secondary Circuit
DTC
P0355
Ignition Coil "E" Primary / Secondary Circuit
DTC
P0356
Ignition Coil "F" Primary / Secondary Circuit
DTC
P0357
Ignition Coil "G" Primary / Secondary Circuit
DTC
P0358
Ignition Coil "H" Primary / Secondary Circuit
DESCRIPTION
HINT:
• These DTCs indicate a malfunction related to a primary circuit.
• If DTC P0351 is displayed, check No. 1 ignition coil circuit.
• If DTC P0352 is displayed, check No. 2 ignition coil circuit.
• If DTC P0353 is displayed, check No. 3 ignition coil circuit.
• If DTC P0354 is displayed, check No. 4 ignition coil circuit.
• If DTC P0355 is displayed, check No. 5 ignition coil circuit.
• If DTC P0356 is displayed, check No. 6 ignition coil circuit.
• If DTC P0357 is displayed, check No. 7 ignition coil circuit.
• If DTC P0358 is displayed, check No. 8 ignition coil 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, the one spark plug is connected to the end of the secondary winding. High voltage
generated in the secondary winding 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 outputs the ignition signals (IGTs) for each cylinder. Using the
IGTs, the ECM turns the power transistor inside the igniter on/off, which switches on/off current to the
primary coil. When 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 current to
the primary coil, the igniter sends back ignition confirmation signals (IGFs) for each cylinder ignition to the
ECM.
ES–209
2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
No. 1 Ignition Coil with Igniter
From Battery
ECM
Igniter
IGT1
No. 1 Cylinder
IGF1
Ignition Coil
Crankshaft Position
Sensor
IGT2
No. 2 Ignition Coil
with Igniter
No. 2 Cylinder
IGF2
ES
IGT3
No. 3 Ignition Coil
with Igniter
No. 3 Cylinder
IGT4
No. 4 Ignition Coil
with Igniter
No. 4 Cylinder
IGT5
No. 5 Ignition Coil
with Igniter
No. 5 Cylinder
IGT6
No. 6 Ignition Coil
with Igniter
No. 6 Cylinder
IGT7
No. 7 Ignition Coil
with Igniter
No. 7 Cylinder
IGT8
No. 8 Ignition Coil
with Igniter
No. 8 Cylinder
Camshaft Position
Sensor
Other Sensor
(Engine Coolant Temperature
Sensor,
Mass Air Flow Meter, Throttle
Position Sensor, etc.)
TAC
to Tachometer
A117778E04
ES–210
2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
DTC No.
DTC Detection Condition
P0351
P0352
P0353
P0354
P0355
P0356
P0357
P0358
Trouble Area
•
•
No IGF signal to ECM while engine is running
•
•
Ignition system
Open or short in IGF or IGT circuit (1 to 8) between
ignition coil with igniter and ECM
No. 1 to No. 8 ignition coil (primary ignition)
ECM
2 V/DIV.
CH 1
Ground
CH 2
Ground
ES
20 msec./DIV.
A093278E13
Reference: Inspect using an oscilloscope.
While cranking or idling the engine, check the waveform between terminals IGT1 to IGT8 and E1, and
IGF1 to IGF2 and E1 of the E6, E8 and E6 ECM connectors.
Items
Terminals
Contents
CH1: IGT1, IGT2, IGT3, IGT4, IGT5,
IGT6, IGT7, IGT8 - E1
CH2: IGF1, IGF2 - E1
Equipment Settings
2 V/DIV.
20 msec./DIV.
Condition
While the engine is cranking or idling
ES–211
2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
MONITOR DESCRIPTION
Ignition Coil with Igniter
IGT
Ignition Coil
ECM
Igniter
IGF
ES
Ignition Signal (IGT)
Ignition
Confirmation
Signal (IGF)
Normal
Open
Open
Time
A082388E19
If the ECM does not receive an IGF after sending an IGT, it interprets this as a fault in the igniter and sets
a DTC.
MONITOR STRATEGY
Related DTCs
P0351: Igniter (cylinder 1) malfunction
P0352: Igniter (cylinder 2) malfunction
P0353: Igniter (cylinder 3) malfunction
P0354: Igniter (cylinder 4) malfunction
P0355: Igniter (cylinder 5) malfunction
P0356: Igniter (cylinder 6) malfunction
P0357: Igniter (cylinder 7) malfunction
P0358: Igniter (cylinder 8) malfunction
Required Sensors/Components (Main)
Igniter
Required Sensors/Components (Related)
Crankshaft position sensor
Frequency of Operation
Continuous
Duration
0.256 seconds + 4 sparks
MIL Operation
Immediate
Sequence of Operation
None
TYPICAL ENABLING CONDITIONS
The monitor will run whenever these DTCs are not present
None
Either of the following condition is met:
Condition 1 or 2
1. Starter
OFF
2. Engine RPM
1,500 rpm or less
Either of the following condition is met:
Condition (a) or (b)
ES–212
2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
(a) All of the following conditions are met:
-
Engine RPM
500 rpm or less
Battery voltage
6 V or more
(b) All of the following conditions are met:
-
Engine RPM
More than 500 rpm
Battery voltage
10 V or more
Number of sparks after CPU is reset
5 sparks or more
TYPICAL MALFUNCTION THRESHOLDS
ES
Ignition signal fail count
More than 2 times
Ignition signal fail count
When IGF does not return despite sending IGT
COMPONENT OPERATING RANGE
IGF signal
Igniter outputs IGF signal when it receives IGT signal from ECM
ES–213
2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
WIRING DIAGRAM
I1 Ignition Coil and
Igniter No. 1
B-R
B-R
B-R
ECM
B-R
LG
1
3
W-B 4
2
R-Y
1 EB1
I3 Ignition Coil and
Igniter No. 3
W-B
R-Y
L-W
B-R
B-R
1
W-B 4
B-Y
R-Y
8
E4 IGT1
24
E4 IGF1
3 R-W
2
11
E4 IGT3
I5 Ignition Coil and
Igniter No. 5
W-B
7 EA1
2
B-R
N1
Noise
Filter
(Ignition
No. 1)
B-R
1
B-R
W-B 4
B-R
1
IG2
1
I18
Ignition SW
W-B 4
2
R-W
W-B
7
N2
Noise
Filter
(Ignition
No. 2)
Engine
Room
R/B
2
2
LG-B
B-R
R
2
1
3
W-B 4
2
B-R
1
W-B 4
R-W
R-W
L-Y
L-Y
10
E4 IGT4
G
12
E4 IGT6
G-B
9
E4 IGT8
3 R-Y
2
I6 Ignition Coil and
Igniter No. 6
1
1
W-B
2
B-R
1
W-B
W-B 4
W-B
3 R-Y
2
I8 Ignition Coil and
Igniter No. 8
B
W-B
B-R
1
B
Battery
EC
ER
ED
15
E4 IGT2
25
E4 IGF2
I4 Ignition Coil and
Igniter No. 4
W-B
AM2
14
E4 IGT7
3 R-Y
I2 Ignition Coil and
Igniter No. 2
AM2
G-W
3 R-W
2
I7 Ignition Coil and
Igniter No. 7
W-B
6
B-L
13
E4 IGT5
W-B
ED
W-B
4
3 R-W
2
A133712E01
ES
ES–214
2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
INSPECTION PROCEDURE
HINT:
• Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition
information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame
data can be helpful in determining whether the vehicle was running or stopped, whether the engine
was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the
time of a malfunction.
• If DTCs P0351, P0354, P0356 and P0357 are output simultaneously, IGF1 circuit may be open or
short.
• If DTCs P0352, P0353, P0355 and P0358 are output simultaneously, IGF2 circuit may be open or
short.
1
CHECK SPARK PLUG AND SPARK OF MISFIRING CYLINDER
ES
(a) Check the spark plug and spark of misfiring cylinder (See
page IG-1).
NG
Go to step 4
OK
2
CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM [IGF SIGNAL TERMINAL])
(a) Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil
with igniter connectors.
(b) Disconnect the E4 ECM connector.
(c) Measure the resistance between the wire harness side
connectors.
Standard resistance
Wire Harness Side
I1
I2
I3
I4
I5
I6
Tester Connection
I7
I8
Ignition coil (I1-2) - IGF1 (E4-24)
Ignition Coil with Igniter Connector
Ignition coil (I2-2) - IGF2 (E4-25)
Ignition coil (I3-2) - IGF2 (E4-25)
Ignition coil (I4-2) - IGF1 (E4-24)
E4
Specified Condition
Ignition coil (I5-2) - IGF2 (E4-25)
Below 1 Ω
Ignition coil (I6-2) - IGF1 (E4-24)
Ignition coil (I7-2) - IGF1 (E4-24)
Ignition coil (I8-2) - IGF2 (E4-25)
Ignition coil (I1-2) or IGF1 (E4-24) Body ground
IGF1
IGF2
ECM Connector
Ignition coil (I2-2) or IGF2 (E4-25) Body ground
A115891E02
Ignition coil (I3-2) or IGF2 (E4-25) Body ground
Ignition coil (I4-2) or IGF1 (E4-24) Body ground
Ignition coil (I5-2) or IGF2 (E4-25) Body ground
Ignition coil (I6-2) or IGF1 (E4-24) Body ground
Ignition coil (I7-2) or IGF1 (E4-24) Body ground
Ignition coil (I8-2) or IGF2 (E4-25) Body ground
10 kΩ or higher
ES–215
2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
(d) Reconnect the ignition coil with igniter connectors.
(e) Reconnect the ECM connector.
NG
REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
3
INSPECT ECM (IGF1 AND IGF2 VOLTAGE)
ECM Connector
E4
IGF2 (+)
E6
IGF1 (+)
E1 (-)
(a) Disconnect the ignition coil with igniter connectors.
(b) Turn the ignition switch ON.
(c) Measure the voltage of the E4 and E6 ECM connectors.
Standard voltage
Tester Connection
Specified Condition
IGF1 (E4-24) - E1 (E6-1)
4.5 to 5.5 V
IGF2 (E4-25) - E1 (E6-1)
4.5 to 5.5 V
(d) Reconnect the ignition coil with igniter connectors.
E118245E24
NG
REPLACE ECM
OK
REPLACE IGNITION COIL WITH IGNITER
4
CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM [IGT SIGNAL TERMINAL])
(a) Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil
with igniter connectors.
(b) Disconnect the E4 ECM connector.
(c) Measure the resistance between the wire harness side
connectors.
Standard resistance
Wire Harness Side
I1
I2
I3
I4
I5
I6
I7
I8
Tester Connection
IGT (I1-3) - IGT1 (E4-8)
Ignition Coil with Igniter Connector
IGT (I2-3) - IGT2 (E4-15)
IGT (I3-3) - IGT3 (E4-11)
IGT (I4-3) - IGT4 (E4-10)
E4
IGT (I5-3) - IGT5 (E4-13)
IGT (I6-3) - IGT6 (E4-12)
IGT (I7-3) - IGT7 (E4-14)
IGT2
IGT7
IGT5
Specified Condition
IGT (I8-3) - IGT8 (E4-9)
IGT1
IGT8
IGT4
IGT3 ECM
IGT6
Connector
A115891E03
Below 1 Ω
ES
ES–216
2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
Tester Connection
Specified Condition
IGT (I1-3) or IGT1 (E4-8) - Body
ground
IGT (I2-3) or IGT2 (E4-15) - Body
ground
IGT (I3-3) or IGT3 (E4-11) - Body
ground
IGT (I4-3) or IGT4 (E4-10) - Body
ground
IGT (I5-3) or IGT5 (E4-13) - Body
ground
10 kΩ or higher
IGT (I6-3) or IGT6 (E4-12) - Body
ground
IGT (I7-3) or IGT7 (E4-14) - Body
ground
IGT (I8-3) or IGT8 (E4-9) - Body
ground
ES
(d) Reconnect the ignition coil with igniter connectors.
(e) Reconnect the ECM connector.
NG
REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
5
INSPECT ECM (IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGT7 OR IGT8 VOLTAGE)
IGT3 (+)
IGT4 (+)
IGT8 (+)
(a) Measure the voltage of the E4 and E6 ECM connectors
when the engine is cranked.
Standard voltage
Tester Connection
IGT1 (+)
Specified Condition
IGT1 (E4-8) - E1 (E6-1)
E4
IGT2 (E4-15) - E1 (E6-1)
E6
IGT3 (E4-11) - E1 (E6-1)
IGT4 (E4-10) - E1 (E6-1)
IGT5 (E4-13) - E1 (E6-1)
IGT6 (E4-12) - E1 (E6-1)
IGT2 (+)
IGT7 (E4-14) - E1 (E6-1)
IGT5 (+) IGT6 (+) E1 (-)
IGT8 (E4-9) - E1 (E6-1)
IGT7 (+)
A116425E08
OK
NG
REPLACE ECM
0.1 to 4.5 V
ES–217
2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
6
INSPECT ECM (IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGT7 OR IGT8 VOLTAGE)
IGT3 (+)
IGT4 (+)
IGT8 (+)
IGT1 (+)
E4
(a) Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil
with igniter connectors.
(b) Measure the voltage of the E4 and E6 ECM connectors
when the engine is cranked.
Standard voltage
Tester Connection
E6
Specified Condition
IGT1 (E4-8) - E1 (E6-1)
IGT2 (E4-15) - E1 (E6-1)
IGT3 (E4-11) - E1 (E6-1)
IGT4 (E4-10) - E1 (E6-1)
4.5 V or more
IGT5 (E4-13) - E1 (E6-1)
IGT5 (+) IGT6 (+) E1 (-)
IGT2 (+)
IGT6 (E4-12) - E1 (E6-1)
IGT7 (E4-14) - E1 (E6-1)
IGT7 (+)
IGT8 (E4-9) - E1 (E6-1)
A116425E08
(c) Reconnect the ignition coil with igniter connectors.
NG
REPLACE ECM
OK
7
INSPECT IGNITION COIL WITH IGNITER (POWER SOURCE)
(a) Disconnect the I1, I2, I3, I4, I5, I6, I7 and I8 ignition coil
with igniter connectors.
(b) Turn the ignition switch ON or START.
(c) Measure the voltage of the wire harness side connector
and body ground.
Standard voltage
Wire Harness Side
I1
I2
I3
I4
I5
I6
I7
I8
Tester Connection
+B
Ignition Coil with Igniter Connector
Specified Condition
+B (I1-1) - Body ground
+B (I2-1) - Body ground
A054393E46
+B (I3-1) - Body ground
+B (I4-1) - Body ground
+B (I5-1) - Body ground
9 to 14 V
+B (I6-1) - Body ground
+B (I7-1) - Body ground
+B (I8-1) - Body ground
(d) Reconnect the ignition coil connectors.
OK
NG
REPLACE IGNITION COIL
ES
ES–218
8
2UZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
CHECK HARNESS AND CONNECTOR (IGNITION COIL - IGNITION SWITCH)
(a) Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil
with igniter connectors.
(b) Disconnect the I18 ignition switch connector.
(c) Measure the resistance between the wire harness side
connectors.
Standard resistance
Wire Harness Side
I1
I2
I3
I4
I5
I6
I7
I8
Tester Connection
Specified Condition
Ignition coil (I1-1) - IG2 (I18-6)
Ignition coil (I2-1) - IG2 (I18-6)
Ignition Coil with Igniter
Ignition coil (I3-1) - IG2 (I18-6)
Ignition coil (I4-1) - IG2 (I18-6)
ES
Ignition coil (I5-1) - IG2 (I18-6)
Below 1 Ω
Ignition coil (I6-1) - IG2 (I18-6)
I18
Ignition coil (I7-1) - IG2 (I18-6)
Ignition coil (I8-1) - IG2 (I18-6)
Ignition coil (I1-1) or IG2 (I18-6) Body ground
Ignition Switch
IG2
A115892E01
Ignition coil (I2-1) or IG2 (I18-6) Body ground
Ignition coil (I3-1) or IG2 (I18-6) Body ground
Ignition coil (I4-1) or IG2 (I18-6) Body ground
Ignition coil (I5-1) or IG2 (I18-6) Body ground
10 kΩ or higher
Ignition coil (I6-1) or IG2 (I18-6) Body ground
Ignition coil (I7-1) or IG2 (I18-6) Body ground
Ignition coil (I8-1) or IG2 (I18-6) Body ground
(d) Reconnect the ignition switch connector.
(e) Reconnect the ignition coil with igniter connectors.
NG
OK
REPLACE IGNITION COIL
REPAIR OR REPLACE HARNESS OR
CONNECTOR