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Nissan Rogue Service Manual: Rear window defogger power supply and ground circuit

Nissan Rogue Service Manual / Driver controls / Defogger / DTC/circuit diagnosis / Rear window defogger power supply and ground circuit

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

Check that the heating wire of rear window defogger is heated when turning the rear window defogger switch ON.

Is the inspection result normal? YES >> Rear window defogger is OK.

NO >> Refer to DEF-26, "Diagnosis Procedure".

Diagnosis Procedure

Regarding Wiring Diagram information, refer to DEF-12, "Wiring Diagram".

1. CHECK FUSES

Check if any of the following fuses in fuse block (J/B) are blown.

Check fuses

Is the inspection result normal? YES >> GO TO 2.

NO >> Replace the blown fuse after repairing the affected circuit.

2. CHECK REAR WINDOW DEFOGGER POWER SUPPLY CIRCUIT

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

Check rear window defogger power supply circuit

Is the inspection result normal? YES >> GO TO 3.

NO >> Perform rear window defogger relay diagnosis. Refer to DEF-24, "Diagnosis Procedure".

3. CHECK POWER SUPPLY CIRCUIT

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

Check power supply circuit

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.

Check ground circuit

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 fuse block (J/B).
  3.  Check continuity between fuse block (J/B) connector and rear window defogger condenser connector.

Check harness continuity

Is the inspection result normal? YES >> Replace rear window defogger condenser. Refer to DEF-41, "Removal and Installation".

NO >> Replace or repair harness.

6. CHECK FILAMENT

Check filament.

Refer to DEF-27, "Component Inspection".

Is the inspection result normal? YES >> Refer to GI-41, "Intermittent Incident".

NO >> Repair filament. Refer to DEF-39, "Inspection and Repair".

Component Inspection

1. CHECK FILAMENT

Check the filament for damage or open circuits.

Refer to DEF-39, "Inspection and Repair".

Is the inspection result normal? YES >> Inspection End.

NO >> Repair filament. Refer to DEF-39, "Inspection and Repair".

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