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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:

Rear-facing child restraint installation using LATCH
Refer to all Warnings and Cautions in the “Child safety” and “Child restraints” sections before installing a child restraint. NISSAN does not recommend the use of the lower anchors if the combined weight of the child and the child restraint exceeds 65 lbs (29.5 kg). If the combined w ...

Diagnosis system (ipdm e/r) (with intelligent key system)
Diagnosis description Auto active test Description In auto active test, the IPDM E/R sends a drive signal to the following systems to check their operation. Front wiper (lo, hi) Parking lamp License plate lamp Tail lamp Front fog lamp (if equipped) Headlamp (LO, HI) A/C compress ...

Voice commands
You can use voice commands to operate various Bluetooth® Hands-Free Phone System features using the NISSAN Voice Recognition system. For more details, see “NISSAN Voice Recognition System” in this section. Voice Prompt Interrupt While using the voice recognition system, the system voice ...

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