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. Diagnosis Chart By Symptom.

2. 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.
With Intelligent Key System





Without Intelligent Key System





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 control harness connector.
With Intelligent Key System





Without Intelligent Key System





3.Check continuity between BCM harness connector and ground.
With Intelligent Key System





Without Intelligent Key System





Is the inspection result normal?
YES- Replace BCM. Removal And Installation (with Intelligent Key System) or Removal And Installation (without Intelligent Key System).
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