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HOMESERVICE MANUALSINFINITI2006FX35 AWDREPAIR AND DIAGNOSISBODY & FRAMEWINDOWSGLASS, WINDOW & MIRRORSPOWER WINDOW SYSTEMCHECK BCM POWER SUPPLY AND GROUND CIRCUIT
2006 Infiniti FX35 AWD

Check BCM Power Supply and Ground Circuit

2006 Infiniti FX35 AWDSECTION Check BCM Power Supply and Ground Circuit
  1. CHECK FUSE 
    • Check 15A fuse [No. 1, located in fuse block (J/B)]
    • Check 15A fuse [No. 22, located in fuse block (J/B)]
    • Check 50A fusible link (letter M, located in the fuse and fusible link box).
      NOTE: Refer to "COMPONENT PARTS AND HARNESS CONNECTOR LOCATION ".

    OK or NG 

    OK : GO TO 2.

    NG : If fuse is blown out, be sure to eliminate cause of malfunction before installing new fuse. Refer to "POWER SUPPLY ROUTING CIRCUIT ".

  2. CHECK POWER SUPPLY CIRCUIT 

    Check voltage between BCM connector and ground.

    TERMINALS VOLTAGE CHART

    Connector Terminal (Wire color) Condition of ignition switch Voltage [V] (Approx.)
    (+) (-)
    M3 38 (W/L) Ground ON Battery voltage
    M4 42 (L/R) OFF
    55 (G)
    Fig 1: Identifying Voltage Between BCM Connector And Ground
    G04077335Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK : GO TO 3.

    NG : Check BCM power supply circuit for open or short.

  3. CHECK GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect BCM connector.
    3. Check continuity between BCM connector M4 terminal 49, 52 and ground.

      49 (B) - Ground : Continuity should exist. 

      52 (B) - Ground : Continuity should exist. 

    OK or NG 

    OK : Power supply and ground circuit are OK.

    NG : Check BCM ground circuit for open or short.

    Fig 2: Identifying Continuity Between BCM Connector M4 Terminal 49, 52 And Ground
    G04077336Courtesy of NISSAN MOTOR CO., U.S.A.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.