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Home >> Nissan-Datsun >> 2009 >> Versa SL, 4D Hatchback >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Body, Lock & Security System >> Service Information >> Intelligent Key System >> Unlock Sensor Check

Unlock Sensor Check

  1. CHECK UNLOCK SENSOR INPUT SIGNAL

    Check voltage between Intelligent Key unit connector and ground.

    TERMINALS VOLTAGE REFERENCE

    Terminals Front door lock (driver side) condition Voltage (V) (Approx).
    (+) (-)
    Intelligent Key unit connector Terminal
    M52 28 Ground Locked 5
    Unlocked 0
    Fig 1: Checking Voltage Between Intelligent Key Unit Connector And Ground
    G05933225Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK : Unlock sensor circuit is OK.

    NG : GO TO 2.

  2. CHECK UNLOCK SENSOR CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect Intelligent Key unit and front door lock actuator LH (door unlock sensor) connector.
    3. Check continuity between Intelligent Key unit connector (A) terminal 28 and front door lock actuator LH (door unlock sensor) connector (B) terminal 4.
      TERMINALS CONTINUITY REFERENCE

      A B Continuity
      Intelligent Key unit connector Terminal Front door lock actuator LH (door unlock sensor) connector Terminal
      M52 28 D3 4 Yes
    4. Check continuity between Intelligent Key unit connector and ground.
      TERMINALS CONTINUITY REFERENCE

      A Ground Continuity
      Intelligent Key unit connector Terminal
      M52 28 No
      Fig 2: Checking Continuity Between Intelligent Key Unit Connector And Ground
      G05933226Courtesy of NISSAN MOTOR CO., U.S.A.

      OK or NG 

      OK : GO TO 3.

      NG : Repair or replace harness between Intelligent Key unit and front door lock actuator LH (door unlock sensor).

  3. CHECK UNLOCK SENSOR OPERATION

    Check unlock sensor.

    TERMINALS CONTINUITY REFERENCE

    Terminal Driver side door condition Continuity
    Unlock sensor
    4 5 Lock No
    Unlock Yes
    Fig 3: Checking Unlock Sensor
    G05933227Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK : GO TO 4.

    NG : Replace unlock sensor.

  4. CHECK UNLOCK SENSOR GROUND CIRCUIT

    Check continuity between front door lock actuator LH (door unlock sensor) connector and ground.

    TERMINALS CONTINUITY REFERENCE

    Front door lock actuator LH (door unlock sensor) connector Terminal Ground Continuity
    D3 5 Yes

    OK or NG 

    OK : GO TO 5.

    NG : Repair or replace harness.

    Fig 4: Checking Continuity Between Front Door Lock Actuator LH Connector And Ground
    G05933228Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK INTELLIGENT KEY UNIT OUTPUT SIGNAL
    1. Connect Intelligent Key unit harness connector.
    2. Check voltage between Intelligent Key unit connector and ground.
      TERMINALS VOLTAGE REFERENCE

      Terminals Voltage (V) (Approx).
      (+) (-)
      Intelligent Key unit connector Terminal
      M52 28 Ground 5
      Fig 5: Checking Voltage Between Intelligent Key Unit Connector And Ground
      G05933225Courtesy of NISSAN MOTOR CO., U.S.A.

      OK or NG 

      OK : Replace front door lock actuator LH (door unlock sensor). Refer to , "REMOVAL AND INSTALLATION ".

      NG : Replace Intelligent Key unit. Refer to , "REMOVAL AND INSTALLATION OF INTELLIGENT KEY UNIT ".

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