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Home >> Infiniti >> 2024 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System >> Component Parts/Circuit Diagnosis >> Power Window Serial Link (Power Window Main Switch) >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK POWER WINDOW SWITCH INPUT SIGNAL 
    1. Turn ignition switch ON.
    2. Check signal between power window main switch harness connector and ground with oscilloscope.
      (+) (-) Signal
      (Reference value)
      power window main switch
      Connector Terminal
      D5 13 Ground
      GNSDB107414Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES>>

    GO TO 4.

    NO>>

    GO TO 2.

  2. CHECK POWER WINDOW SERIAL LINK SIGNAL 
    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.
      (+) (-) Voltage (V)
      (Approx.)
      Power window main switch
      Connector Terminal
      D5 13 Ground 12

    Is the inspection result normal?

    YES>>

    Replace power window main switch. Refer to POWER WINDOW MAIN SWITCH : Removal and Installation .

    NO>>

    GO TO 3.

  3. CHECK POWER WINDOW SERIAL LINK CIRCUIT 
    1. Disconnect BCM connector and power window main switch connector.
    2. Check continuity between BCM harness connector and power window main switch harness connector.
      BCM Power window main switch Continuity
      Connector Terminal Connector Terminal
      M68 8 D5 13 Existed
    3. Check continuity between BCM harness connector and ground.
      BCM Ground Continuity
      Connector Terminal
      M68 8 Not existed

    Is the inspection result normal?

    YES>>

    Replace BCM. Refer to BCM : Removal and Installation .

    NO>>

    Repair or replace harness.

  4. CHECK INTERMITTENT INCIDENT 

    Refer to Inspection .

    >>

    INSPECTION END