Diagnosis Procedure

REAR WINDOW DEFOGGER SWITCH

WITH AUTO A/C : Diagnosis Procedure


1. CHECK AUTO A/C

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

2. CHECK BCM OUTPUT SIGNAL

1.Turn ignition switch OFF.
2.Disconnect AUTO amp. connector.
3.Check voltage between AUTO 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 AUTO 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 AUTO AMP.

1.Turn ignition switch OFF.
2.Replace AUTO 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.