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Home >> Infiniti >> 2006 >> FX45 >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Body, Lock & Security System >> Intelligent Key System >> Check Unlock Sensor

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.
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