Rear Window Defogger And Door Mirror Defogger Do Not Operate

REAR WINDOW DEFOGGER AND DOOR MIRROR DEFOGGER DO NOT OPERATE.

Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" [1][2]Electrical Diagrams.

1. CHECK REAR WINDOW DEFOGGER SWITCH

Check rear window defogger switch.
Refer to "WITH MANUAL A/C : Component Function Check" Component Function Check.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace the malfunctioning parts.

2. CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay.
Refer to "Component Function Check" Rear Window Defogger Relay.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace the malfunctioning parts.

3. CHECK REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT

Check rear window defogger power supply and ground circuit.
Refer to "Component Function Check" Rear Window Defogger Power Supply And Ground Circuit.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace the malfunctioning parts.

4. CHECK DOOR MIRROR DEFOGGER POWER SUPPLY

1.Turn ignition switch ON.
2.Check voltage between fuse block (J/B) connector M5 and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- Replace fuse block (J/B).

5. CHECK BOTH DOOR MIRROR DEFOGGER

1.Check door mirror LH. Refer to "Component Function Check" Driver Side Door Mirror Defogger.
2.Check door mirror RH. Refer to "Component Function Check" Passenger Side Door Mirror Defogger.
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace the malfunctioning parts.