Coupe

REAR WINDOW DEFOGGER

Description

Heats the heating wire with the power supply from the rear window defogger relay to prevent the rear window from fogging up.


Component Function Check


1. CHECK REAR WINDOW DEFOGGER

With CONSULT
1.Turn ignition switch ON.
2.Select "REAR DEFOGGER" of "BCM" using CONSULT.
3.Select "REAR DEFOGGER" in "ACTIVE TEST" mode.
4.Touch "ON".
5.Check that the rear window heating wire is getting warmer.
Is the inspection result normal?
YES- Rear window defogger is OK.
NO- .


Diagnosis Procedure


1. CHECK FUSE

1.Turn ignition switch OFF.
2.Check 20A fuse [No.14, No.15, located in fuse block (J/B)].
Is the inspection result normal?
YES- GO TO 2.
NO- Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2. CHECK POWER SUPPLY CIRCUIT

1.Turn ignition switch ON.
2.Check voltage between rear window defogger harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 4.

3. CHECK GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect rear window defogger connector.
3.Check continuity between rear window defogger harness connector and ground.





Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace harness.

4. CHECK REAR WINDOW DEFOGGER CIRCUIT 1

1.Turn ignition switch OFF.
2.Disconnect condenser connector and rear window defogger connector.
3.Check continuity between condenser (condenser side) connector and rear window defogger harness connector.





4.Check continuity between condenser (condenser side) connector and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- Replace condenser. Removal And Installation

5. CHECK REAR WINDOW DEFOGGER CIRCUIT 2

1.Disconnect fuse block (J/B) connector.
2.Check continuity between fuse block (J/B) harness connector and condenser harness connector.





3.Check continuity between fuse block (J/B) harness connector and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace harness.

6. CHECK FUSE BLOCK (J/B)

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





Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace fuse block (J/B).

7. CHECK FILAMENT

Check filament.

Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace filament. Coupe.

8. CHECK INTERMITTENT INCIDENT

Check intermittent incident.
Intermittent Incident Regular Grade.
- INSPECTION END


Component Inspection


1. CHECK FILAMENT

Check the filament for damage.
Coupe
Is the inspection result normal?
YES- INSPECTION END
NO- Repair filament.