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Home >> Infiniti >> 2009 >> M45 Base >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Body, Lock & Security System >> Service Information >> Intelligent Key System/Engine Start Function >> DTC B2558: Shift Position >> Diagnostic Procedure

Diagnostic Procedure

  1. CHECK CONTROL DEVICE SIGNAL
    1. Turn ignition switch ON.
    2. Check voltage between Intelligent Key unit connector and ground.
    VOLTAGE REFERENCE CHART

    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
    G05212339Courtesy 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 control device connector.
    3. Check continuity between Intelligent Key unit connector and control device connector.
      CONTINUITY REFERENCE CHART

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

    A Ground Continuity
    Intelligent Key unit connector Terminal
    M32 27 No
    M33 58
    Fig 2: Checking Continuity Between Intelligent Key Unit And Control Device Connector
    G05212340Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  3.

    NG: Repair or replace harness.

  3. CHECK CONTROL DEVICE

    Check control device.

    CONTINUITY REFERENCE CHART

    Terminal A/T control device position Continuity
    Control device
    9 10 P Yes
    Other than above No

    OK or NG 

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

    NG: Replace control device.

    Fig 3: Checking Control Device
    G05212341Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK TCM SIGNAL

    Check Intelligent Key unit connector and ground.

    VOLTAGE REFERENCE CHART

    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
    G05212342Courtesy 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-III 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 REFERENCE CHART

      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 REFERENCE CHART

    A Ground Continuity
    Intelligent Key unit connector Terminal
    M32 28 No
    Fig 5: Checking Continuity Between Intelligent Key Unit And TCM Connector
    G05212343Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Replace TCM.

    NG: Repair or replace harness.

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