Diagnosis Procedure

REAR WINDOW DEFOGGER RELAY


Description

Power is supplied to the rear window defogger with BCM control.




REAR WINDOW DEFOGGER RELAY


Diagnosis Procedure

1.CHECK FUSE
1. Turn ignition switch off.
2. Check the following.
- 10A fuse (No.3, located in fuse block (J/B))
Is the inspection result normal?
YES - GO TO 2.
NO - Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.CHECK REAR WINDOW DEFOGGER CIRCUIT 1
1. Turn ignition switch ON.
2. Check voltage between BCM harness connector and ground.





Is the inspection result normal?
YES - GO TO 6.
NO - GO TO 3.
3.CHECK REAR WINDOW DEFOGGER CIRCUIT 2
1. Turn ignition switch OFF.
2. Disconnect BCM connector and rear window defogger relay.
3. Check continuity between BCM harness connector and fuse block (J/B) harness connector.





4. Check continuity between BCM harness connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace harness.
4.CHECK REAR WINDOW DEFOGGER RELAY
Check rear window defogger relay. Refer to Component Inspection
Is the inspection result normal?
YES - GO TO 5.
NO - Replace rear window defogger relay.
5.CHECK FUSE BLOCK (J/B)
1. Install the rear window defogger relay.
2. Turn ignition switch ON.
3. Check voltage between fuse block (J/B) (fuse block side) and ground.





Is the inspection result normal?
YES - GO TO 6.
NO - Repair or replace fuse block (J/B).
6.CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to Intermittent Incident
- INSPECTION END.