Rear Window Defogger Circuit Inspection

REAR WINDOW DEFOGGER

Rear Window Defogger Circuit Inspection


1. CHECK FUSES

Check if any of the following fuses in IPDM E/R are 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 REAR WINDOW DEFOGGER POWER SUPPLY CIRCUIT






1.Turn ignition switch OFF.
2.Disconnect rear window defogger.
3.Turn ignition switch ON.
4.Check voltage between rear window defogger connector and ground.





OK or NG
OK- GO TO 3.
NG- GO TO 4.

3. CHECK REAR WINDOW DEFOGGER GROUND CIRCUIT






1.Turn ignition switch OFF.
2.Check continuity between rear window defogger connector
D413 terminal 2 and ground.
2 - Ground: Continuity should exist.
OK or NG
OK-Check filament. Filament Check.
- If filament is OK.
Check the condition of the harness and the connector.
- If filament is NG.
Repair filament. Service and Repair.
NG- Repair or replace harness.

4. CHECK CONDENSER-1 CIRCUIT






1.Disconnect condenser-1.
2.Check continuity between rear window defogger connector (A)
and condenser-1 connector (B).





3.Check continuity between rear window defogger connector (A)
and ground.





OK or NG
OK- GO TO 5.
NG- Repair or replace harness.

5. CHECK CONDENSER-1






Check continuity between condenser-1 (A) and (B) terminals.





OK or NG
OK- GO TO 6.
NG- Replace condenser-1.

6. CHECK CONDENSER-1 HARNESS CONTINUITY






1.Disconnect IPDM E/R.
2.Check continuity between condenser-1 connector (A) and IPDM
E/R connector (B).





3.Check continuity between condenser-1 connector (A) and ground.





OK or NG
OK- GO TO 7.
NG- Repair or replace harness.

7. CHECK REAR WINDOW DEFOGGER RELAY OUTPUT SIGNAL

1.Connect IPDM E/R.





2.Turn ignition switch ON.
3.Check voltage between IPDM E/R connector and ground.





OK or NG
OK- Check condition of harness and connector.
NG- Replace IPDM E/R. Service and Repair .