DTC Diagnosis Procedure
- CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
- Turn ignition switch OFF, wait at least 10 seconds and then turn it ON.
- Check the voltage between ECM harness connector terminals under the following conditions.
ECM
Voltage
Connector
+
-
Terminal
Terminal
E77
145
152
Battery voltage
Is the inspection result normal?
YES
GO TO 2.
NO
Go to DTC Diagnosis Procedure .
- CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II
- Turn ignition switch OFF.
- Disconnect condenser harness connector.
- Turn ignition switch ON.
- Check the voltage between condenser harness connector and ground.
Condenser
Ground
Voltage
Connector
Terminal
F61
1
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 5.
NO
GO TO 3.
- CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III
- Turn ignition switch OFF.
- Disconnect IPDM E/R harness connector.
- Check the continuity between IPDM E/R harness connector and condenser harness connector.
IPDM E/R
Condenser
Continuity
Connector
Terminal
Connector
Terminal
E119
3
F61
1
Existed
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
Go to DTC Diagnosis Procedure .
NO
GO TO 4.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness for open or short between IPDM E/R and condenser
- Loose or poor connection for each connector and harness
Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Check the continuity between condenser harness connector and ground.
Condenser
Ground
Continuity
Connector
Terminal
F61
2
Ground
Existed
- Also check harness for short to power.
Is the inspection result normal?
YES
GO TO 6.
NO
Repair open circuit or short to power in harness or connectors.
- CHECK CONDENSER
Refer to Component Inspection (Condenser)
Is the inspection result normal?
YES
GO TO 7.
NO
Replace condenser.
- CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV
- Reconnect all harness connectors disconnected.
- Disconnect ignition coil harness connector.
- Turn ignition switch ON.
- Check the voltage between ignition coil harness connector and ground.
Ignition coil
Ground
Voltage
Cylinder
Connector
Terminal
1
F47
3
Ground
Battery voltage
2
F1
3
3
F48
3
4
F19
3
5
F49
3
6
F41
3
7
F51
3
8
F52
3
Is the inspection result normal?
YES
GO TO 9.
NO
GO TO 8.
- DETECT MALFUNCTIONING PART
Check the following.
- Harness connector F10 and E45
- Harness for open or short between ignition coil and harness connector F10
Repair or replace harness or connectors.
- CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Check the continuity between ignition coil harness connector and ground.
Ignition coil
Ground
Continuity
Cylinder
Connector
Terminal
1
F47
2
Ground
Existed
2
F1
2
3
F48
2
4
F19
2
5
F49
2
6
F41
2
7
F51
2
8
F52
2
- Also check harness for short to power.
Is the inspection result normal?
YES
GO TO 10.
NO
Repair open circuit or short to power in harness or connectors.
- CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
- Disconnect ECM harness connector.
- Check the continuity between ignition coil harness connector and ECM harness connector.
Ignition coil
ECM
Continuity
Cylinder
Connector
Terminal
Connector
Terminal
1
F47
1
F49
95
Existed
2
F1
1
91
3
F48
1
92
4
F19
1
104
5
F49
1
102
6
F41
1
94
7
F51
1
105
8
F52
1
101
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 11.
NO
Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK IGNITION COIL WITH POWER TRANSISTOR
Refer to Component Inspection (Ignition Coil with Power Transistor) .
Is the inspection result normal?
YES
GO TO 12.
NO
Replace malfunctioning ignition coil with power transistor.
- CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .
INSPECTION END