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Home >> Infiniti >> 2011 >> G37 IPL, Standard >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System -- G37 Coupe >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Power Window Main Switch >> POWER WINDOW MAIN SWITCH : Diagnosis Procedure

POWER WINDOW MAIN SWITCH : Diagnosis Procedure

  1. CHECK POWER SUPPLY CIRCUIT 1
    1. Turn ignition switch OFF.
    2. Disconnect power window main switch connector.
    3. Turn ignition switch ON.
    4. Check voltage between power window main switch harness connector and ground.
    TERMINALS VOLTAGE REFERENCE CHART

    (+) (-) Voltage (V) (Approx.)
    Power window main switch
    Connector Terminal
    D8 1 Ground Battery voltage
    10

    Is the measurement value within the specification? 

    YES: GO TO  3.

    NO: GO TO 2.

  2. CHECK POWER SUPPLY CIRCUIT 2
    1. Turn ignition switch OFF.
    2. Disconnect BCM connector.
    3. Check continuity between BCM harness connector and power window main switch harness connector.
      TERMINALS CONTINUITY REFERENCE CHART

      BCM Power window main switch Continuity
      Connector Terminal Connector Terminal
      M118 2 D8 1 Existed
      3 10
    4. Check continuity between BCM harness connector and ground.
    TERMINALS CONTINUITY REFERENCE CHART

    BCM   Continuity
    Connector Terminal  
    M118 2 Ground Not existed
    3

    Is the inspection result normal? 

    YES: Replace BCM. Refer to "EXPLODED VIEW "

    NO: Repair or replace harness.

  3. CHECK GROUND CIRCUIT
    1. Turn ignition switch OFF.
    2. Check continuity between power window main switch harness connector and ground.
    TERMINALS CONTINUITY REFERENCE CHART

    Power window main switch   Continuity
    Connector Terminal  
    D8 15 Ground Existed

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Repair or replace harness.

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