Power Supply and Ground Circuit

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure


1. CHECK AIR LEVELIZER CONTROL MODULE IGNITION POWER SUPPLY CIRCUIT

1.Disconnect air levelizer control module connector.
2.Turn ignition switch ON.

CAUTION:
Never start the engine.
3.Check voltage between the air levelizer control module harness connector and ground.





Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 2.

2. CHECK HARNESS BETWEEN AIR LEVELIZER CONTROL MODULE AND IPDM E/R

1.Turn ignition switch OFF.
2.Disconnect IPDM E/R connector.
3.Check continuity between air levelizer control module harness connector and IPDM E/R harness connector.





4.Check continuity between air levelizer control module harness connector ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace damaged parts.

3. CHECK IPDM E/R

Check the IPDM E/R. Refer to "Diagnosis Description" Diagnosis Description.
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace damaged parts.