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HOMESERVICE MANUALSINFINITI2006FX35 AWDREPAIR AND DIAGNOSISBODY & FRAMEEXTERIOR BODY PANELSBODY, LOCK & SECURITY SYSTEMINTELLIGENT KEY SYSTEMCHECK UNLOCK SENSOR
2006 Infiniti FX35 AWD

Check Unlock Sensor

2006 Infiniti FX35 AWDSECTION Check Unlock Sensor
  1. CHECK UNLOCK SENSOR POWER SUPPLY 

    Check voltage between Intelligent Key unit connector and ground.

    VOLTAGE SPECIFICATIONS

    Connector Terminals (Wire color) Condition Voltage (V) (Approx.)
    (+) (-)
    M34 28 (W/B) Ground Driver side door lock is locked 5
    Driver side door lock is unlocked 0
    Fig 1: Identifying Voltage Between Intelligent Key Unit Connector And Ground
    G04077055Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK : Unlock sensor is OK.

    NG : GO TO 2.

  2. CHECK UNLOCK SENSOR CIRCUIT 
    1. Turn ignition knob LOCK position.
    2. Disconnect Intelligent Key unit and front door lock assembly (driver side) connector.
    3. Check continuity between Intelligent Key unit connector M34 terminal 28 (W/B) and front door lock assembly (driver side) connector D10 terminal 4 (W).

      28 (W/B) - 4 (W) : Continuity should exist. 

    OK or NG 

    OK : GO TO 3.

    NG : Repair or replace harness between Intelligent Key unit and front door lock assembly (driver side).

    Fig 2: Identifying Continuity Between Intelligent Key Unit Connector M34 Terminal 28 (W/B) And Front Door Lock Assembly Connector D10 Terminal 4 (W)
    G04077056Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK UNLOCK SENSOR GROUND CIRCUIT 

    Check continuity between front door lock assembly (driver side) connector D10 terminal 5 (B) and ground.

    5 (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 D10 Terminal 5 (B) And Ground
    G04077057Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK INTELLIGENT KEY UNIT OUTPUT SIGNAL 
    1. Connect Intelligent Key unit connector.
    2. Driver side door lock is locked.
    3. Check voltage between Intelligent Key unit connector M34 terminal 28 (W/B) and ground.

      28 (W/B) - Ground : Approx. 5V 

    OK or NG 

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

    NG : Replace Intelligent Key unit.

    Fig 4: Identifying Voltage Between Intelligent Key Unit Connector M34 Terminal 28 (W/B) And Ground
    G04077058Courtesy 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.