Nissan Murano: Dtc/circuit Diagnosis / Combination Switch Input Circuit

Nissan Murano (Z52) 2015-2024 Service Manual / Electrical & Power Control / Body Control System :: Bcm / Dtc/circuit Diagnosis / Combination Switch Input Circuit

Diagnosis Procedure

CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN

  1. Ignition switch OFF.

  2. Disconnect BCM connector and combination switch connector.

  3. Check continuity between BCM harness connector and combination switch harness connector.

    Combination switch signal BCM Combination switch Continuity
    Connector Terminal Connector Terminal
    INPUT 1 M19 79 M28 11 Yes
    INPUT 2 78 9
    INPUT 3 77 7
    INPUT 4 76 10
    INPUT 5 75 13

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair or replace harness or connectors.

CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT

Check continuity between BCM harness connector and ground.

Combination switch signal BCM Ground Continuity
Connector Terminal
INPUT 1 M19 79 No
INPUT 2 78
INPUT 3 77
INPUT 4 76
INPUT 5 75

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness or connectors.

CHECK BCM OUTPUT VOLTAGE

  1. Connect BCM connector and combination switch connector.

  2. Ignition switch ON.

  3. Check voltage between BCM connector and ground.

    (+) (–) Voltage
    Combination switch signal BCM
    Connector Terminal
    INPUT 1 M19 79 Ground Refer to Reference Value.
    INPUT 2 78
    INPUT 3 77
    INPUT 4 76
    INPUT 5 75

Is the inspection result normal?

YES>>

Replace the combination switch. Refer to Removal and Installation.

NO>>

Replace BCM. Refer to Removal and Installation.

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    Symptom Diagnosis

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