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Home >> Infiniti >> 2011 >> G37 IPL, Standard >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Door & Lock -- G37 Coupe >> DTC/Circuit Diagnosis >> Door Switch >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK DOOR SWITCH INPUT SIGNAL
    1. Turn ignition switch OFF.
    2. Disconnect malfunctioning door switch connector.
    3. Check signal between malfunctioning door switch harness connector and ground using oscilloscope.
      DOOR SWITCH INPUT SIGNAL REFERENCE CHART

      (+) (-) Signal (Reference value)
      Door switch
      Connector Terminal
      Driver side B16 2 Ground
      G07169417
      Passenger side B216 2
      G07169418

      Is the inspection result normal? 

      YES: GO TO  3.

      NO: GO TO 2.

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

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

      Door switch Ground Continuity
      Connector Terminal
      Driver side B16 2 Not existed
      Passenger side B216

      Is the inspection result normal? 

      YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

      NO: Repair or replace harness.

  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