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Home >> Infiniti >> 2016 >> Q50 Base, RWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System (Except Hybrid) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Power Window Main Switch >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK POWER SUPPLY CIRCUIT 1

    1. Turn ignition switch OFF.
    2. Disconnect power window main switch connectors.
    3. Turn ignition switch ON.
    4. Check voltage between power window main switch harness connector and ground.
      (+) (-) Voltage (V)
      Power window main switch
      Connector Terminal
      D8 4 Ground 9 - 16
      9

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    GO TO STEP 3  .

  2. CHECK GROUND CIRCUIT

    1. Turn ignition switch OFF.
    2. Check continuity between power window main switch harness connector and ground.
      Power window main switch Ground Continuity
      Connector Terminal
      D8 7 Existed

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    Repair or replace harness.

  3. 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.
      BCM Power window main switch Continuity
      Connector Terminal Connector Terminal
      M17 140 D8 9 Existed
      141 4
    4. Check continuity between BCM harness connector and ground.
      BCM Ground Continuity
      Connector Terminal
      M17 140 Not existed
      141

    Is the inspection result normal?

    YES 

    Replace BCM. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  4. CHECK INTERMITTENT INCIDENT

    Refer to INTERMITTENT INCIDENT .

    INSPECTION END

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