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Home >> Nissan-Datsun >> 2009 >> Cube Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Body Control System >> Without Intelligent Key System >> DTC/Circuit Diagnosis >> Combination Switch Input Circuit >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK INPUT 1 - 5 CIRCUIT FOR OPEN
    1. Turn ignition switch OFF.
    2. Disconnect BCM and combination switch connectors.
    3. Check continuity between BCM harness connector and combination switch harness connector.
    CONTINUITY REFERENCE CHART

    System BCM Combination switch Continuity
    Connector Terminal Connector Terminal
    OUTPUT 1 M65 6 M27 12 Existed
    OUTPUT 2 5 14
    OUTPUT 3 4 5
    OUTPUT 4 3 2
    OUTPUT 5 2 8

    Does continuity exist? 

    YES: GO TO 2.

    NO: Repair harnesses or connectors.

  2. CHECK INPUT 1 - 5 CIRCUIT FOR SHORT

    Check for continuity between BCM harness connector and ground.

    CONTINUITY REFERENCE CHART

    System BCM Ground Continuity
    Connector Terminal
    OUTPUT 1 M65 6 Not existed
    OUTPUT 2 5
    OUTPUT 3 4
    OUTPUT 4 3
    OUTPUT 5 2

    Does continuity exist? 

    YES: Repair harnesses or connectors.

    NO: GO TO 3.

  3. CHECK BCM INPUT SIGNAL
    1. Connect BCM and combination switch connectors.
    2. Turn ON any switch in the system that is malfunction.
    3. Check voltage between BCM harness connector and ground.
    VOLTAGE REFERENCE CHART

    System Terminals Voltage (Approx.)
    (+) (-)
    BCM Ground
    Connector Terminal
    INPUT 1 M65 6 Refer to "REFERENCE VALUE ".
    INPUT 2 5
    INPUT 3 4
    INPUT 4 3
    INPUT 5 2

    Is the measurement value normal? 

    Yes: Replace BCM. Refer to "EXPLODED VIEW ".

    No: Replace combination switch.

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