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Nissan Sentra Service Manual: Rear window defogger and door mirror defoggers do not operate

Nissan Sentra Service Manual / Driver controls / Defogger / Symptom diagnosis / Rear window defogger and door mirror defoggers do not operate

Diagnosis procedure

Regarding Wiring Diagram information, refer to DEF-20, "Wiring Diagram".

1. Check rear window defogger switch

Check rear window defogger switch.

Refer to def-30, "component function check".

Is the inspection result normal? Yes >> go to 2.

No >> repair or replace the malfunctioning parts.

2. Check rear window defogger relay

Check rear window defogger relay.

Refer to def-32, "component function check".

Is the inspection result normal? Yes >> go to 3 .

No >> repair or replace the malfunctioning parts.

3. Check rear window defogger power supply and ground circuit

Check rear window defogger power supply and ground circuit.

Refer to def-33, "component function check".

Is the inspection result normal? Yes >> check intermittent incident. Refer to gi-39, "intermittent incident".

No >> repair or replace the malfunctioning parts.

Defogger system symptoms
Symptom table *: if equipped ...

Rear window defogger does not operate but both door mirror defoggers operate
Diagnosis procedure 1. Check rear window defogger power supply and ground circuit Check rear window defogger power supply and ground circuit. Refer to DEF-32, "Component Function Check" ...

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