Nissan Murano: Defogger :: Dtc/circuit Diagnosis / Rear Window Defogger Relay

Nissan Murano (Z52) 2015-2024 Service Manual / Driver Controls / Defogger :: Dtc/circuit Diagnosis / Rear Window Defogger Relay

Component Function Check

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 Diagnosis Procedure.

Diagnosis Procedure

CHECK REAR WINDOW DEFOGGER RELAY GROUND CIRCUIT

  1. Ignition switch ON.

  2. Check voltage between BCM connector and ground.

    (+) (–) Condition

    Voltage

    (Approx.)
    BCM
    Connector Terminal
    M19 61 Ground Rear window defogger switch ON 0 V
    OFF Battery voltage

Is the inspection result normal?

YES>>

Rear window defogger power supply circuit is OK.

NO>>

GO TO 2.

CHECK HARNESS CONTINUITY

  1. Ignition switch OFF.

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

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

    BCM Fuse block (J/B) Continuity
    Connector Terminal Connector Terminal
    M19 61 M4 6P Yes

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness.

CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident.

NO>>

Replace rear window defogger relay.

Component Inspection

CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay.

Rear window defogger relay Condition Continuity
Terminal
3 5 12 V direct current supply between terminals 1 and 2 Yes
No current supply No

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace rear window defogger relay.

    Rear Window Defogger Switch

    Component Function Check CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION Check that the rear window defogger indicator lamp illuminates when the rear window defogger switch is ON...

    Rear Window Defogger Power Supply and Ground Circuit

    Component Function Check CHECK REAR WINDOW DEFOGGER Check that the rear window defogger heating wire is heated when the rear window defogger switch is turned ON...

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    Categories

    Autolight system

    Nissan Murano. Autolight system

    The autolight system allows the headlights to turn on and off automatically. The autolight system can:

    Turn on the headlights, front parking, tail, license plate and instrument panel lights automatically when it is dark. Turn off all the lights (except daylight running lights) when it is light. Keep all the lights on for a period of time after you place the ignition switch in the OFF position and all doors are closed.

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