Diagnosis Procedure

REAR WINDOW DEFOGGER SWITCH

WITHOUT AUTO A/C : Diagnosis Procedure


1. CHECK BCM OUTPUT SIGNAL

1.Turn ignition switch OFF.
2.Disconnect A/C control connector.
3.Check voltage between A/C control harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 2.

2. CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT

1.Disconnect BCM connector.
2.Check continuity between BCM harness connector and A/C control harness connector.





3.Check continuity between BCM harness connector and ground.





Is the inspection result normal?
YES- Replace BCM. With Intelligent Key System (With Intelligent Key system) or Service and Repair (Without Intelligent Key system).
NO- Repair or replace harness.

3. CHECK GROUND CIRCUIT

Check continuity between A/C control harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace harness.

4. CHECK REAR WINDOW DEFOGGER SWITCH

Component Inspection.
Is the inspection result normal?
YES- GO TO 5.
NO- Replace A/C control. Removal And Installation.

5. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
Is the inspection result normal?
- INSPECTION END