Diagnosis Procedure

1. Turn ignition switch OFF.
2. Check 10 A fuse [No. 3, 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.

1. Turn ignition switch ON.
2. Check voltage between BCM harness connector and ground.

   BCM		Ground	Condition		Voltage (V) (Approx.)
   Connector	Terminal
   M120	1	Ground	Rear window defogger switch	ON	0
   				OFF	Battery voltage

Is the inspection result normal?

YES

GO TO 4.

NO

GO TO 3.

1. Turn ignition switch OFF.
2. Disconnect BCM connector and rear window defogger relay.
3. Check continuity between BCM harness connector and fuse block (J/B) harness connector.

   BCM		Fuse block (J/B)		Continuity
   Connector	Terminal	Connector	Terminal
   M120	1	M2	4B	Existed

4. Check continuity between BCM harness connector and ground.

   BCM		Ground	Continuity
   Connector	Terminal
   M120	1		Not existed

Is the inspection result normal?

YES

GO TO 4.

NO

Repair or replace harness.

Check rear window defogger relay.

Refer to Component Inspection 

Is the inspection result normal?

YES

GO TO 5.

NO

Replace rear window defogger relay.

1. Install the rear window defogger relay.
2. Turn ignition switch ON.
3. Check voltage between fuse block (J/B) (fuse block side) and ground.

   Fuse block (J/B)		Ground	Voltage (V) (Approx.)
   Connector	Terminal
   M2	4B	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 6.

NO

Repair or replace fuse block (J/B).

Check intermittent incident.

Refer to Intermittent Incident .

INSPECTION END.