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HOMESERVICE MANUALSINFINITI2006FX35 AWDREPAIR AND DIAGNOSISBODY & FRAMEEXTERIOR BODY PANELSBODY, LOCK & SECURITY SYSTEMBACK DOOR AUTO CLOSURE SYSTEMCHECK UNLOCK SENSOR (WITHOUT INTELLIGENT KEY)
2006 Infiniti FX35 AWD

Check Unlock Sensor (Without Intelligent Key)

2006 Infiniti FX35 AWDSECTION Check Unlock Sensor (Without Intelligent Key)
  1. CHECK UNLOCK SENSOR SIGNAL 
    1. Turn ignition switch OFF.
    2. Check voltage between back door closure control unit connector and ground.
      CONNECTOR TERMINAL VOLTAGE SPECIFICATIONS

      Connector Terminals (Wire color) Condition Voltage (V) (Approx.)
      (+) (-)
      D106 5 (W) Ground Passenger side door lock is locked 5
      Passenger side door lock is unlocked 0
      Fig 1: Identifying Voltage Between Back Door Closure Control Unit Connector And Ground
      G04077180Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK : Unlock sensor is OK.

    NG : GO TO 2.

  2. CHECK HARNESS CONTINUITY 
    1. Disconnect back door closure control unit and front door lock assembly (passenger side) connector.
    2. Check continuity between back door closure control unit connector D106 terminal 5 and front door lock assembly (passenger side) connector D40 terminal 5.

      5 (W) - 5 (W) : Continuity should exist. 

    OK or NG 

    OK : GO TO 3.

    NG : Repair or replace harness between back door closure control unit and front door lock assembly (passenger side).

    Fig 2: Identifying Harness Continuity
    G04077181Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK GROUND CIRCUIT 

    Check continuity between front door lock assembly (passenger side) connector D40 terminal 4 and ground.

    4 (B) - Ground : Continuity should exist. 

    OK or NG 

    OK : GO TO 4.

    NG : Repair or replace harness.

    Fig 3: Identifying Continuity Between Front Door Lock Assembly Connector D40 Terminal 4 And Ground
    G04077182Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK BACK DOOR CLOSURE CONTROL UNIT OUTPUT SIGNAL 
    1. Connect back door closure control unit connector.
    2. Check voltage between back door closure control unit connector D106 terminal 5 and ground.

      5 (W) - Ground : Approx. 5V 

    OK or NG 

    OK : Replace front door lock assembly (passenger side).

    NG : Replace back door closure control unit.

    Fig 4: Identifying Voltage Between Back Door Closure Control Unit Connector D106 Terminal 5 And Ground
    G04077183Courtesy 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.