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Check Power Supply And Ground Circuit

WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FUSES 
    • Check for blown fuses.
      FUSES CHECK CHART

      Unit Power source Fuse No.
      BCM Battery F
      18
      Ignition switch ON or START position 1
      Ignition switch ACC or ON position 6
      IPDM E/R Battery 72
      74
      76
      86

      Refer to "WIRING DIAGRAM - AUTO/L -  ".

    OK or NG

    1. OK: GO TO 2.
    2. NG: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to "POWER DISTRIBUTION " .
  2. CHECK POWER SUPPLY CIRCUIT 
    1. Disconnect BCM connector.
    2. Check voltage between BCM harness connector and ground.
      VOLTAGE CHECK CHART

      Terminals Ignition switch position
      (+) (-) OFF ACC ON
      Connector Terminal (Wire color)
      M34 11 (P/B) Ground 0 V Battery voltage Battery voltage
      38 (R) 0V 0V Battery voltage
      M35 42 (GR) Battery voltage Battery voltage Battery voltage
      55 (W/B) Battery voltage Battery voltage Battery voltage

    OK or NG

    1. OK: GO TO 3.
    2. NG: Check harness for open or short between BCM and fuse.
      Fig 1: Checking Voltage Between BCM Harness Connector And Ground
      G03491986Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK GROUND CIRCUIT 

    Check continuity between BCM harness connector and ground.

    CONTINUITY CHECK CHART

    Terminals Continuity
    (+) (-)
    Connector Terminal (Wire color)
    M35 49 (B) Ground Yes
    52 (B)

    OK or NG

    1. OK: INSPECTION END
    2. NG: Check ground circuit harness.
      Fig 2: Checking Continuity Between BCM Harness Connector And Ground
      G03491987Courtesy of NISSAN MOTOR CO., U.S.A.