 1.CHECK GROUND CONNECTION
- Turn ignition switch OFF.
- Check ground connection M95. Refer to Ground Inspection in Circuit Inspection.
Is the inspection result normal?
YES >>GO TO 2. NO >>Repair or replace ground connection.
 2.CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT
- Disconnect ECM harness connector.
- Check the continuity between ECM harness connector and ground.
ECM
| Ground
| Continuity
| Connector
| Terminal
| F101
| 6
| Ground
| Existed
| F102
| 54
| M107
| 124
| 128
|
- Also check harness for short to power.
Is the inspection result normal?
YES >>GO TO 4. NO >>GO TO 3.
 3.DETECT MALFUNCTIONING PART
Check the following. - Harness connectors F103, M116
- Harness for open or short between ECM and ground
>>Repair open circuit or short to power in harness or connectors.
 4.CHECK ECM POWER SUPPLY CIRCUIT-I
- Reconnect ECM harness connector.
- Turn ignition switch ON.
- Check the voltage between ECM harness connector and ground.
ECM
| Voltage
| Connector
| +
| –
| Terminal
| Terminal
| M107
| 106
| 128
| Battery voltage
|
Is the inspection result normal?
YES >>GO TO 6. NO >>GO TO 5.
 5.DETECT MALFUNCTIONING PART
Check the following. - Harness connectors E106, M6
- IPDM E/R harness connector E7
- 10A fuse (No. 44)
- Harness for open or short between ECM and fuse
>>Repair open circuit, short to ground or short to power in harness or connectors.
 6.CHECK ECM POWER SUPPLY CIRCUIT-II
- Turn ignition switch OFF and wait at least 10 seconds.
- Check the voltage between ECM harness connector terminals as follows.
ECM
| Voltage
| Connector
| +
| –
| Terminal
| Terminal
| M107
| 121
| 128
| After turning ignition switch OFF, battery voltage will exist for a few seconds, then drop to approximately 0 V.
| 122
|
Is the inspection result normal?
YES >>GO TO 7. NO >>GO TO 9.
 7.CHECK ECM POWER SUPPLY CIRCUIT-III
- Turn ignition switch ON.
- Check the voltage between IPDM E/R harness connector and ground.
IPDM E/R
| Ground
| Voltage
| Connector
| Terminal
| E7
| 53
| Ground
| Battery voltage
|
Is the inspection result normal?
YES >>GO TO 8. NO >>Replace IPDM E/R.
 8.CHECK INTERMITTENT INCIDENT
 9.CHECK ECM POWER SUPPLY CIRCUIT-III
- Turn ignition switch OFF and wait at least 10 seconds.
- Check the voltage between ECM harness connector terminals as follows.
ECM
| Voltage
| Connector
| +
| –
| Terminal
| Terminal
| M107
| 105
| 128
| Battery voltage
|
Is the inspection result normal?
YES >>GO TO 13. NO >>GO TO 10.
 10.CHECK ECM POWER SUPPLY CIRCUIT-IV
- Disconnect ECM harness connector.
- Disconnect IPDM E/R harness connector.
- Check the continuity between ECM harness connector and IPDM E/R harness connector.
ECM
| IPDM E/R
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| M107
| 105
| E7
| 69
| Existed
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 12. NO >>GO TO 11.
 11.DETECT MALFUNCTIONING PART
Check the following. - Harness connectors E106, M6
- Harness for open or short between ECM and IPDM E/R
>>Repair open circuit, short to ground or short to power in harness or connectors.
 12.CHECK 15A FUSE
- Disconnect 15A fuse (No. 50) from IPDM E/R.
- Check 15A fuse.
Is the inspection result normal?
YES >>GO TO 15. NO >>Replace 15A fuse.
 13.CHECK ECM POWER SUPPLY CIRCUIT-IV
- Disconnect ECM harness connector.
- Disconnect IPDM E/R harness connector.
- Check the continuity between ECM harness connector and IPDM E/R harness connector.
ECM
| IPDM E/R
| Continuity
| Connector
| Terminal
| Connector
| Terminal
| M107
| 121
| E7
| 49
| Existed
| 122
|
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >>GO TO 15. NO >>GO TO 14.
 14.DETECT MALFUNCTIONING PART
Check the following. - Harness or connectors E106, M6
- Harness for open or short between ECM and IPDM E/R
>>Repair open circuit, short to ground or short to power in harness or connectors.
 15.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident. Is the inspection result normal? YES >>Replace IPDM E/R. NO >>Repair open circuit, short to ground or short to power in harness or connectors.
|