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Nissan Sentra Service Manual: Both doors mirror defogger don’t operate but rear window defogger operates

Nissan Sentra Service Manual / Driver controls / Defogger / Symptom diagnosis / Both doors mirror defogger don’t operate but rear window defogger operates

Diagnosis procedure

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

1. Check door mirror defogger fuse

Check if the following fuse in fuse block (J/B) is blown.

Is the inspection result normal?


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

No >> replace the blown fuse after repairing the affected circuit.

2. Check door mirror defogger power supply circuit

Check door mirror defogger power supply and ground circuit.

Refer to def-35, "component function check" (driver side) or def-37, "component function check" (passenger side).

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

No >> repair or replace the malfunctioning parts.

3. Check both door mirror defogger

  1. Check door mirror lh. Refer to def-36, "component inspection".
  2. Check door mirror RH. Refer to DEF-38, "Component Inspection".

Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> Repair or replace the malfunctioning parts.

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" ...

Driver side door mirror defogger does not operate
Diagnosis procedure 1. Check door mirror defogger lh Check door mirror defogger LH. Refer to DEF-35, "Component Function Check". Is the inspection result normal? YES >> Refer ...

Other materials:

Diagnosis system (BCM)
Common item Common item : consult function (bcm - common item) APPLICATION ITEM CONSULT performs the following functions via CAN communication with BCM. SYSTEM APPLICATION BCM can perform the following functions. Intelligent key Intelligent key : consult function (bcm - intelligent ke ...

Tire chains
CAUTION Tire chains/cables should not be installed on P205/50R17 size tires. Installation of the tire chains/cables on P205/50R17 size tires will cause damage to the vehicle. If you plan to use tire chains/cables, you should install P205/55R16 size tires on your vehicle. Use of tire chains m ...

Washer fluid level switch circuit
Description Transmits the washer level switch signal to the combination meter. Diagnosis procedure Regarding Wiring Diagram information, refer to MWI-28, "Wiring Diagram". 1.Check washer level switch signal circuit Turn ignition switch off. Disconnect combination meter connecto ...

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