Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Infiniti >> 2008 >> EX35 Base, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System >> Component Diagnosis >> Power Supply And Ground Circuit >> Power Window Main Switch >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK POWER SUPPLY CIRCUIT 1 
    1. Turn ignition 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 SPECIFICATION

      (+) (-) Voltage (V) (Approx.)
      Power window main switch
      Connector Terminal
      D8 10 Ground Battery voltage
      D9 19

    Is the inspection result normal? 

    YES: GO TO  2.

    NO: GO TO  3.

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

      Power window main switch Ground Continuity
      Connector Terminal
      D9 17 Existed

    Is the inspection result normal? 

    YES: INSPECTION END

    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.
      CONTINUITY SPECIFICATION

      BCM Power window main switch Continuity
      Connector Terminal Connector Terminal
      M118 2 D9 19 Existed
      3 D8 10
    4. Check continuity between BCM harness connector and ground.
      CONTINUITY SPECIFICATION

      BCM Ground Continuity
      Connector Terminal
      M118 2 Not existed
      3

    Is the inspection result normal? 

    YES: Replace BCM. Refer to REMOVAL AND INSTALLATION .

    NO: Repair or replace harness.