Diesel Data: Automotive Repair

Rear Window Defogger and Door Mirror Defogger Do Not Operate




REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER DO NOT OPERATE.

Diagnosis Procedure


1. CHECK POWER SUPPLY AND GROUND CIRCUIT

Check power supply and ground circuit.
Power Supply and Ground Circuit.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace the malfunctioning parts.

2. CHECK REAR WINDOW DEFOGGER SWITCH

Check rear window defogger switch.
Rear Window Defogger Switch.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace the malfunctioning parts.

3. CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay.
Rear Window Defogger Relay.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace the malfunctioning parts.

4. CONFIRM THE OPERATION

Confirm the operation again.
Is the inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- GO TO 1.