Nissan Versa

 Sedan Service Manual

Driver controls » Defogger (DEF) » Rear window defogger power supply and ground circuit
Diagnosis Procedure

Regarding Wiring Diagram information, refer to DEF "Wiring Diagram".

1. CHECK FUSES

Is the inspection result normal?

YES >> GO TO 2

NO >> 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 ON.

2. Check voltage between rear window defogger relay connector and ground.

Is the inspection result normal?

YES >> GO TO 3

NO >> Check the following:

Rear window defogger relay.

Battery power supply circuit.

3. CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch ON.

2. Check voltage between rear window defogger connector and ground.

Is the inspection result normal?

YES >> GO TO 4

NO >> GO TO 5

4. CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect rear window defogger.

3. Check continuity between rear window defogger connector and ground.

Is the inspection result normal?

YES >> GO TO 6

NO >> Repair or replace harness.

5. CHECK HARNESS CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect rear window defogger relay connector and rear window defogger.

3. Check continuity between rear window defogger relay connector and rear window defogger connector.

Is the inspection result normal?

YES >> Check intermittent incident. Refer to GI "Intermittent Incident".

NO >> Replace or repair harness.

6. CHECK FILAMENT

Check filament.

Refer to DEF "Component Inspection".

Is the inspection result normal?

YES >> Refer to GI "Intermittent Incident".

NO >> Repair filament. Refer to DEF "Inspection and Repair".

Component Function Check

Diagnosis Procedure

Component Inspection