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Check Unlock Sensor

  1. CHECK UNLOCK SENSOR POWER SUPPLY 

    With CONSULT-III 

    Check unlock sensor ("DOOR STAT SW") in "DATA MONITOR" mode.

    DATA MONITOR

    Monitor item Condition
    DOOR STAT SW Front door lock (driver side) LOCK: ON
    Front door lock (driver side) UNLOCK: OFF

    Without CONSULT-III 

    Check voltage between Intelligent Key unit connector and ground.

    TERMINAL VOLTAGE CHART

    Terminals Front door lock (driver side) condition Voltage (V) (Approx.)
    (+) (-)
    Intelligent Key unit connector Terminal
    M32 26 Ground Locked Battery voltage
    Unlocked 0

    OK or NG 

    OK: Unlock sensor is OK.

    NG: GO TO 2.

    Fig 1: Checking Voltage Between Intelligent Key Unit Connector Terminal 26 And Ground
    G05212229Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK UNLOCK SENSOR CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect Intelligent Key unit and front door lock assembly (driver side) connector.
    3. Check continuity between Intelligent Key unit connector and front door lock assembly (driver side) connector.
      TERMINAL CONTINUITY CHART

      A B Continuity
      Intelligent Key unit connector Terminal Front door lock assembly (driver side) connector Terminal
      M32 26 D14 3 Yes
    4. Check continuity between Intelligent Key unit connector and ground.
      TERMINAL CONTINUITY CHART

      A Ground Continuity
      Intelligent Key unit connector Terminal
      M32 26 No
      Fig 2: Checking Continuity Between Intelligent Key Unit Connector And Front Door Lock Assembly (Driver Side) Connector
      G05212230Courtesy 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 assembly (driver side).

  3. CHECK UNLOCK SENSOR GROUND CIRCUIT 

    Check continuity between front door lock assembly (driver side) connector and ground.

    TERMINAL CONTINUITY CHART

    Front door lock assembly (driver side) connector Terminal Ground Continuity
    D14 4 Yes

    OK or NG 

    OK: GO TO 4.

    NG: Repair or replace harness.

    Fig 3: Checking Continuity Between Front Door Lock Assembly (Driver Side) Connector Terminal 4 And Ground
    G05212231Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK INTELLIGENT KEY UNIT OUTPUT SIGNAL 
    1. Connect Intelligent Key unit harness connector.
    2. Check voltage between Intelligent Key unit connector and ground.
      TERMINAL VOLTAGE CHART

      Terminals Voltage (V) (Approx.)
      (+) (-)
      Intelligent Key unit connector Terminal
      M32 26 Ground Battery voltage

    OK or NG 

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

    NG: Replace Intelligent Key unit.

    Fig 4: Checking Voltage Between Intelligent Key Unit Connector Terminal 26 And Ground
    G05212229Courtesy of NISSAN MOTOR CO., U.S.A.
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