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HOMESERVICE MANUALSINFINITI2006FX35 AWDREPAIR AND DIAGNOSISBODY & FRAMEEXTERIOR BODY PANELSBODY, LOCK & SECURITY SYSTEMINTELLIGENT KEY SYSTEMCHECK DOOR SWITCHCHECK BACK DOOR SWITCH
2006 Infiniti FX35 AWD

Check Back Door Switch

2006 Infiniti FX35 AWDSECTION Check Back Door Switch
  1. CHECK BACK DOOR SWITCH INPUT SIGNAL 

    Check voltage between BCM connector and ground.

    BCM CONNECTOR TERMINAL VOLTAGE SPECIFICATIONS

    Connector Terminals (Wire color) Condition Voltage (V) (Approx.)
    (+) (-)
    B14 58 (L) Ground OPEN 0
    CLOSE 9
    Fig 1: Identifying Voltage Between BCM Connector And Ground
    G04077050Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK : Back door switch circuit is OK.

    NG : GO TO 2.

  2. CHECK HARNESS CONTINUITY 
    1. Turn ignition switch OFF.
    2. Disconnect BCM and back door closure motor connector.
    3. Check continuity between BCM connector B14 terminal 58 and back door closure motor connector D109 terminal 7.

      58 (L) - 7 (L) : Continuity should exist. 

    4. Check continuity between BCM connector B14 terminal 58 and ground.

      58 (L) - Ground : Continuity should not exist. 

      Fig 2: Identifying Continuity Between BCM Connector B14 Terminal 58 And Ground
      G04077051Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK : GO TO 3.

    NG : Repair or replace harness.

  3. CHECK GROUND CIRCUIT 

    Check continuity between back door closure motor connector D109 terminal 8 and ground.

    8 (B) - Ground : Continuity should exist. 

    OK or NG 

    OK : GO TO 4.

    NG : Repair or replace harness.

    Fig 3: Identifying Continuity Between Back Door Closure Motor Connector D109 Terminal 8 And Ground
    G04077052Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK BACK DOOR SWITCH 

    Check continuity between back door closure motor D109 terminals 7 and 8.

    CONTINUITY SPECIFICATIONS

    Terminals Back door condition Continuity
    7 8 Open Yes
    Close No

    OK or NG 

    OK : GO TO 5.

    NG : Replace back door closure motor.

    Fig 4: Identifying Continuity Between Back Door Closure Motor D109 Terminals 7 And 8
    G04077053Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK BCM OUTPUT SIGNAL 
    1. Connect BCM connector.
    2. Check voltage between BCM connector and ground.

      58 (L) - Ground : Approx. 9V 

    OK or NG 

    OK : Check condition of harness and connector.

    NG : Replace BCM.

    Fig 5: Identifying Voltage Between BCM Connector And Ground
    G04077054Courtesy of NISSAN MOTOR CO., U.S.A.
RENDER: 1.0x

NO RELATED

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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.