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Diagnosis Procedure

  1. CHECK DOOR SWITCH INPUT SIGNAL
    1. Turn ignition switch OFF.
    2. Check signal between BCM harness connector and ground with oscilloscope.
    TERMINAL VOLTAGE REFERENCE CHART

    Terminals Door condition Voltage (V) (Approx.)
    (+) (-)
    BCM connector Terminal
    M123 150 Ground Driver side OPEN 0
    CLOSE
    G04888175Courtesy of NISSAN MOTOR CO., U.S.A.
    124 Passenger side OPEN 0
    CLOSE
    G04888175Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO  4.

    NO: GO TO  2.

  2. CHECK DOOR SWITCH CIRCUIT
    1. Disconnect BCM connector and door switch connector.
    2. Check continuity between BCM harness connector and door switch harness connector.
      TERMINAL CONTINUITY REFERENCE CHART

      BCM connector Terminal Door switch connector Terminal Continuity
      M123 150 B16 (Driver side) 2 Existed
      124 B216 (Passenger side)
    3. Check continuity between BCM harness connector and ground.
    TERMINAL CONTINUITY REFERENCE CHART

    BCM connector Terminal Ground Continuity
    M123 150 Not existed
    124

    Is the inspection result normal? 

    YES: GO TO  3.

    NO: Repair or replace harness between BCM and door switch.

  3. CHECK DOOR SWITCH

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO  4.

    NO: Replace malfunctioning door switch. Refer to "REMOVAL AND INSTALLATION ".

  4. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    INSPECTION END

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