Nissan Altima (L32) 2007-2012 Service Manual: Driver side door mirror defogger

Description

Heats the heating wire with the power supply from the rear window defogger relay to prevent the door mirror from fogging up.

Component Function Check

1. CHECK DOOR MIRROR DEFOGGER LH

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

Is the inspection result normal? YES >> Door mirror defogger is OK.

NO >> Refer to DEF-15, "Diagnosis Procedure".

Diagnosis Procedure

1. CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect door mirror LH.

3. Turn ignition switch ON.

4. Check voltage between door mirror LH connector and ground.

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

NO >> Repair or replace harness.

2. CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between door mirror LH connector and ground.

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

NO >> Repair or replace harness.

3. CHECK DOOR MIRROR DEFOGGER LH

Check door mirror defogger LH.

Refer to DEF-16, "Component Inspection".

Is the inspection result normal? YES >> GO TO 4

NO >> Replace door mirror. Refer to MIR-19, "Removal and Installation".

4. CHECK INTERMITTENT INCIDENT

Check intermittent incident.

Refer to GI-42, "Intermittent Incident".

Is the inspection result normal? YES >> Check the following.

• Battery power supply circuit.

• Fuse block (J/B).

NO >> Repair or replace the malfunctioning parts.

Component Inspection

1. CHECK DOOR MIRROR DEFOGGER LH

1. Turn ignition switch OFF.

2. Disconnect door mirror LH.

3. Check continuity between door mirror terminals.

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

NO >> Replace door mirror LH. Refer to MIR-19, "Removal and Installation".