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Diagnostic Procedure

  1. CHECK STEERING LOCK UNIT POWER SUPPLY 
    1. Turn ignition switch OFF.
    2. Disconnect steering lock unit connector.
    3. Check voltage between steering lock unit connector and ground.
      VOLTAGE SPECIFICATIONS

      Terminals Voltage (V) (Approx.)
      (+) (-)
      Steering lock unit connector Terminal
      M35 7 Ground Battery voltage
    Fig 1: Checking Voltage Between Steering Lock Unit Connector And Ground
    G04145316Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  3.

    NG: GO TO 2.

  2. CHECK HARNESS CONTINUITY 1 
    1. Disconnect Intelligent Key unit connector.
    2. Check continuity between Intelligent Key unit connector and steering lock unit connector.
      CONTINUITY CONDITIONS

      A B Continuity
      Intelligent Key unit connector Terminal Steering lock unit connector Terminal
      M32 15 M35 7 Yes
    3. Check continuity between Intelligent Key unit connector and ground.
    CONTINUITY CONDITIONS

    A Ground Continuity
    Intelligent Key unit connector Terminal
    M32 15 No
    Fig 2: Checking Harness Continuity 1
    G04145317Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Check the condition of harness and connector.

    NG: Repair or replace harness.

  3. CHECK STEERING LOCK UNIT SIGNAL 
    1. Connect steering lock unit connector.
    2. Check voltage between steering lock unit connector and ground.
      VOLTAGE SPECIFICATIONS

      Terminals Condition Voltage (V) (Approx.)
      (+) (-)
      Steering lock unit connector Terminal
      M35 4 Ground When turn ignition switch to START with Intelligent Key in the car Battery voltage --> 0 --> Battery voltage
    Fig 3: Checking Voltage Between Steering Lock Unit Connector And Ground
    G04145318Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace steering lock unit.

    NG: GO TO 4.

  4. CHECK HARNESS CONTINUITY 2 
    1. Turn ignition switch OFF.
    2. Disconnect Intelligent Key unit and steering lock unit connector.
    3. Check continuity between Intelligent Key unit connector and steering lock unit connector.
      CONTINUITY CONDITIONS

      A B Continuity
      Intelligent Key unit connector Terminal Steering lock unit connector Terminal
      M32 16 M35 4 Yes
    4. Check continuity between Intelligent Key unit connector and ground.
      CONTINUITY CONDITIONS

      A Ground Continuity
      Intelligent Key unit connector Terminal
      M32 16 No
      Fig 4: Checking Harness Continuity 2
      G04145319Courtesy of NISSAN MOTOR CO., U.S.A.

      OK or NG 

      OK: Check the condition of harness and connector. If it is OK, check the self-diagnosis results using CONSULT-II again.

      NG: Repair or replace harness.

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