Nissan Altima 2007-2012 Service Manual: Rear window defogger relay

Description

Power is supplied to the rear window defogger with BCM control.

Component Function Check

1. CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT

Check that an operation noise of rear window defogger relay [located in fuse block (J/B)] can be heard when turning the rear window defogger switch ON.

Is the inspection result normal? YES >> Rear window defogger relay power supply circuit is OK.

NO >> Refer to DEF-11, "Diagnosis Procedure".

Diagnosis Procedure

1. CHECK REAR WINDOW DEFOGGER RELAY GROUND CIRCUIT

1. Turn ignition switch ON.

2. Check voltage between BCM connector and ground.

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

NO >> GO TO 2

2. CHECK HARNESS CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect BCM and fuse block (J/B).

3. Check continuity between BCM connector (A) and fuse block (J/ B) connector (B).

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

NO >> Repair or replace harness.

3. CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay.

Refer to DEF-12, "Component Inspection".

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

NO >> Replace rear window defogger relay.

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 REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay.

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

NO >> Replace rear window defogger relay.

    Rear window defogger switch
    Description • The rear window defogger is operated by turning the rear window defogger switch ON. • Turns the indicator lamp in the rear window defogger switch ON when operating the rear ...

    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 ...

    Other materials:

    Ground
    Ground Distribution MAIN HARNESS ENGINE ROOM HARNESS FRONT END MODULE HARNESS ENGINE CONTROL HARNESS BODY HARNESS BODY NO. 2 HARNESS HARNESS Harness Layout HOW TO READ HARNESS LAYOUT The following Harness Layouts use a map style grid to help locate connectors on the draw ...

    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 voic ...

    Preparation
    Special Service Tool The actual shapes of the Kent-Moore tools may differ from those of the special service tools illustrated here. Commercial Service Tool ...