DTC Diagnosis Procedure
- CHECK IGNITION COIL POWER SUPPLY CIRCUIT-1
- Turn ignition switch OFF, wait at least 10 seconds and then turn it ON.
- Check the voltage between ECM harness connector terminals as per the following.
ECM
Voltage
Connector
+
-
Terminal
E16
145
152
Battery voltage
Is the inspection result normal?
YES
GO TO 2.
NO
Perform the trouble diagnosis for power supply circuit.
- CHECK IGNITION COIL POWER SUPPLY CIRCUIT-2
- Turn ignition switch OFF.
- Disconnect condenser harness connector.
- Turn ignition switch ON.
- Check the voltage between condenser-1 harness connector and ground.
+
-
Voltage
Condenser-1
Connector
Terminal
F21
1
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 5.
NO
GO TO 3.
- CHECK IGNITION COIL POWER SUPPLY CIRCUIT-3
- Turn ignition switch OFF.
- Disconnect IPDM E/R harness connector.
- Check the continuity between IPDM E/R harness connector and condenser harness connector.
+
-
Continuity
IPDM E/R
Condenser-1
Connector
Terminal
Connector
Terminal
E119
3
F21
1
Existed
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
GO TO 4.
- CHECK CONDENSER-1 GROUND CIRCUIT
- Turn ignition switch OFF.
- Check the continuity between condenser harness connector and ground.
+
-
Continuity
Condenser-1
Connector
Terminal
F21
2
Ground
Existed
- Also check harness for short to power.
Is the inspection result normal?
YES
GO TO 5.
NO
Repair or replace error-detected parts.
- CHECK CONDENSER-1
Refer to Component Inspection (Condenser-1)
Is the inspection result normal?
YES
GO TO 6.
NO
Replace condenser-1.
- CHECK IGNITION COIL POWER SUPPLY CIRCUIT-4
- Reconnect all harness connectors disconnected.
- Disconnect ignition coil harness connector.
- Turn ignition switch ON.
- Check the voltage between ignition coil harness connector and ground.
+
-
Voltage
Ignition coil
Cylinder
Connector
Terminal
1
F207
3
Ground
Battery voltage
2
F6
3
3
F208
3
4
F7
3
5
F209
3
6
F8
3
Is the inspection result normal?
YES
GO TO 7.
NO
Repair or replace error-detected parts.
- CHECK IGNITION COIL GROUND CIRCUIT
- Turn ignition switch OFF.
- Check the continuity between ignition coil harness connector and ground.
+
-
Continuity
Ignition coil
Cylinder
Connector
Terminal
1
F207
2
Ground
Existed
2
F6
2
3
F208
2
4
F7
2
5
F209
2
6
F8
2
- Also check harness for short to power.
Is the inspection result normal?
YES
GO TO 8.
NO
Repair or replace error-detected parts.
- 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.
+
-
Continuity
Ignition coil
ECM
Cylinder
Connector
Terminal
Connector
Terminal
1
F207
1
F77
113
Existed
2
F6
1
106
3
F208
1
103
4
F7
1
114
5
F209
1
107
6
F8
1
104
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 9.
NO
Repair or replace error-detected parts.
- CHECK IGNITION COIL WITH POWER TRANSISTOR
Refer to Component Inspection (Ignition Coil with Power Transistor) .
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
Replace malfunctioning ignition coil with power transistor. Refer to Removal and Installation .