Power Supply and Ground Circuit (VVEL Control Module)

POWER SUPPLY AND GROUND CIRCUIT (VVEL CONTROL MODULE)

Diagnosis Procedure


1. CHECK GROUND CONNECTION

1.Turn ignition switch OFF.
2.Check ground connections M95, E46. Refer to Ground Inspection in "Circuit Inspection" 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

1.Disconnect VVEL control module harness connector.
2.Check the continuity between VVEL control module harness connector and ground.





3.Also check harness for short to power.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair open circuit or short to power in harness connectors.

3. CHECK VVEL CONTROL MODULE POWER SUPPLY CIRCUIT-I

1.Reconnect VVEL control module harness connector.
2.Turn ignition switch ON.
3.Check the voltage between VVEL control module harness connector.





Is the inspection result normal?
YES- GO TO 4.
NO- GO TO 5.

4. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
Is the inspection result normal?
YES- Replace IPDM E/R. Refer to "Removal and Installation" Removal and Installation.
NO- Repair open circuit, short to ground or short to power in harness or connectors.

5. CHECK VVEL CONTROL MODULE POWER SUPPLY CIRCUIT-II

1.Turn ignition switch OFF and wait at least 10 seconds.
2.Check the voltage between ECM harness connector terminals.





Is the inspection result normal?
YES- GO TO 9.
NO- GO TO 6.

6. CHECK VVEL CONTROL MODULE POWER SUPPLY CIRCUIT-III

1.Disconnect ECM harness connector.
2.Disconnect IPDM E/R harness connector.
3.Check the continuity between ECM harness connector and IPDM E/R harness connector.





4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 8.
NO- GO TO 7.

7. DETECT MALFUNCTIONING PART

Check the following.
- Harness or connectors E3, F1
- Harness or connectors F104, F105
- 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.

8. CHECK 15 A FUSE

1.Disconnect 15 A fuse (No. 50) from IPDM E/R.
2.Check 15 A fuse.
Is the inspection result normal?
YES- GO TO 9.
NO- Replace 15A fuse.

9. CHECK VVEL CONTROL MODULE POWER SUPPLY CIRCUIT-IV

1.Disconnect ECM harness connector.
2.Disconnect IPDM E/R harness connector.
3.Check the continuity between ECM harness connector and IPDM E/R harness connector.





4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 11.
NO- GO TO 10.

10. 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.

11. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
Is the inspection result normal?
YES- Replace IPDM E/R. Refer to "Removal and Installation" Removal and Installation.
NO- Repair open circuit, short to ground or short to power in harness or connectors.