Diagnosis Procedure

REAR WINDOW DEFOGGER SWITCH

WITH MANUAL A/C : Diagnosis Procedure


1. CHECK MANUAL A/C

Check the operating condition of manual A/C
Does manual A/C operate normally?
YES- GO TO 2.
NO- Perform manual A/C diagnosis. Refer to "Work Flow" Manual Air Conditioning.

2. CHECK BCM OUTPUT SIGNAL

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





Is the inspection result normal?
YES- GO TO 4.
NO- GO TO 3.

3. CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT

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





Is the inspection result normal?
YES- Replace BCM. Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace harness.

4. REPLACE A/C AMP.

1.Turn ignition switch OFF.
2.Replace A/C amp.
3.Turn ignition switch ON.
4.Operate rear window defogger switch and check the operating condition.
Is the inspection result normal?
YES- INSPECTION END.
NO- GO TO 5.

5. CHECK INTERMITTENT INCIDENT

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