Rear Window Defogger Symptom Diagnosis
REAR WINDOW DEFOGGER SYMPTOM DIAGNOSIS
| Condition | Possible Cause | Action |
|---|---|---|
| Defogger does not work | "REAR DEFG" fuse blown | Replace fuse to check for short . |
| Defogger switch faulty | Check HVAC control module referring to HVAC CONTROL MODULE AND ITS CIRCUITS INSPECTION . | |
| Defogger heat wire faulty | Check heat wire referring to Rear Window Defogger Wire Inspection and Repair . | |
| Defogger relay faulty | Check defogger relay referring to REAR WINDOW DEFOGGER RELAY INSPECTION . | |
| Wiring or grounding faulty | Repair as necessary . |