Rear Window Defogger Symptom Diagnosis
REAR WINDOW DEFOGGER SYMPTOM DIAGNOSIS CHART
| Condition | Possible cause | Correction / Reference Item |
|---|---|---|
| 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. |