LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2007 >> M35 Base >> Repair and Diagnosis >> Body & Frame >> Windows >> Glass, Window System & Mirrors >> Power Window System >> Check BCM Power Supply and Ground Circuit

Check BCM Power Supply and Ground Circuit

  1. CHECK FUSE 
    • Check 15A fuse [No. 1, located in fuse block (J/B)]
    • Check 10A fuse [No. 21, located in fuse block (J/B)]
    • Check 50A fusible link (letter F  , located in the fuse and fusible link box).

    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.

    VOLTAGE SPECIFICATION

    Terminals Condition of ignition switch Voltage (V) (Approx.)
    (+) (-)
    BCM connector Terminal
    M1 38 Ground ON Battery voltage
    M2 42 OFF
    55
    Fig 1: Checking Voltage Between BCM Connector And Ground
    G05212573

    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 and ground.
      CONTINUITY SPECIFICATION

      BCM connector Terminal Ground Continuity
      M2 52 Yes

    OK or NG 

    OK: Power supply and ground circuit are OK.

    NG: Check BCM ground circuit for open or short.

    Fig 2: Checking Continuity Between BCM Connector And Ground
    G05212574