Door Mirror Defogger Circuit Inspection

REAR WINDOW DEFOGGER

Door Mirror Defogger Circuit Inspection


1. CHECK FUSE

Check if the following fuse in the fuse block (J/B) is blown.





OK or NG
OK- GO TO 2.
NG- If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2. CHECK HEATED MIRROR RELAY POWER SUPPLY CIRCUIT

1.Disconnect heated mirror relay.





2.Turn ignition switch ON.
3.Check voltage between heated mirror relay connector and ground.





OK or NG
OK- GO TO 3.
NG- Repair or replace harness.

3. CHECK HEATED MIRROR RELAY GROUND CIRCUIT






1.Turn ignition switch OFF.
2.Check continuity between heated mirror relay connector M48
terminal 2 and ground.
2 - Ground : Continuity should exist.
OK or NG
OK- GO TO 4.
NG- Repair or replace harness.

4. INSPECTION OF HEATED MIRROR RELAY






Check continuity between heated mirror relay terminals 3 and 5.





OK or NG
OK- GO TO 5.
NG- Replace heated mirror relay.

5. CHECK HARNESS CONTINUITY






1.Disconnect door mirror (LH or RH).
2.Check continuity between door mirror (LH or RH) connector (A)
and heated mirror relay connector (B).





3.Check continuity between door mirror (LH or RH) connector (A)
and ground.





OK or NG
OK- GO TO 6.
NG- Repair or replace harness.

6. CHECK GROUND CIRCUIT






Check continuity between door mirror (LH or RH) connector and ground.





OK or NG
OK- Replace door mirror (LH or RH). Removal and Installation.
NG- Repair or replace harness.