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Home >> Infiniti >> 2006 >> M35 Base >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Body, Lock & Security System >> Intelligent Key System/Engine Start Function >> DTC B2558: Shift Position >> Diagnostic Procedure
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Diagnostic Procedure

  1. CHECK A/T DEVICE SIGNAL 
    1. Turn ignition switch ON.
    2. Check voltage between Intelligent Key unit connector and ground.
      VOLTAGE SPECIFICATIONS

      Terminals A/T control device position Voltage (V) (Approx.)
      (+) (-)
      Intelligent Key unit connector Terminal
      M32 27 Ground P 0
      Other than above Battery voltage
    Fig 1: Checking Voltage Between Intelligent Key Unit Connector And Ground
    G04145340Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  4.

    NG: GO TO 2.

  2. CHECK HARNESS CONTINUITY 1 
    1. Turn ignition switch OFF.
    2. Disconnect Intelligent Key unit and A/T device connector.
    3. Check continuity between Intelligent Key unit connector and A/T device connector.
      CONTINUITY CONDITIONS

      A B Continuity
      Intelligent Key unit connector Terminal A/T device connector Terminal
      M32 27 M133 10 Yes
      M33 58 9
    4. Check continuity between Intelligent Key unit connector and ground.
      CONTINUITY CONDITIONS

      A Ground Continuity
      Intelligent Key unit connector Terminal
      M32 27 No
      M33 58
    Fig 2: Checking Harness Continuity 1
    G04145341Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace harness.

  3. CHECK A/T DEVICE 

    Check A/T device.

    CONTINUITY CONDITIONS

    Terminal A/T control device position Continuity
    A/T device
    9 10 P Yes
    Other than above No
    Fig 3: Checking A/T Device
    G04145342Courtesy 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: Replace A/T device.

  4. CHECK TCM SIGNAL 

    Check Intelligent Key unit connector and ground.

    VOLTAGE SPECIFICATIONS

    Terminals A/T control device position Voltage (V) (Approx.)
    (+) (-)
    Intelligent Key unit connector Terminal
    M32 28 Ground N or P Battery voltage
    Other than above 0
    Fig 4: Checking Intelligent Key Unit Connector And Ground
    G04145343Courtesy 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: GO TO 5.

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

      A B Continuity
      Intelligent Key unit connector Terminal TCM connector Terminal
      M32 28 F502 8 Yes
    4. Check continuity between Intelligent Key unit connector and ground.
      CONTINUITY CONDITIONS

      A Ground Continuity
      Intelligent Key unit connector Terminal
      M32 28 No
    Fig 5: Checking Harness Continuity 2
    G04145344Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace TCM.

    NG: Repair or replace harness.

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