LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2007 >> M45 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Body, Lock & Security System >> Intelligent Key System/Engine Start Function >> DTC B2558: Shift Position >> Diagnostic Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Procedure

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

    OK or NG 

    OK: GO TO  4.

    NG: GO TO 2.

    Fig 1: Checking Voltage Between Intelligent Key Unit Connector Terminal 27 And Ground
    G05212339
  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.
      TERMINAL CONTINUITY CHART

      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.
      TERMINAL CONTINUITY CHART

      A Ground Continuity
      Intelligent Key unit connector Terminal
      M32 27 No
      M33 58

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace harness.

    Fig 2: Checking Continuity Between Intelligent Key Unit Connector And A/T Device Connector
    G05212340
  3. CHECK A/T DEVICE 

    Check A/T device.

    TERMINAL REFERENCE CHART

    Terminal A/T control device position Continuity
    A/T 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-II again.

    NG: Replace A/T device.

    Fig 3: Checking A/T Device
    G05212341
  4. CHECK TCM SIGNAL 

    Check Intelligent Key unit connector and ground.

    TERMINAL VOLTAGE 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 Terminal 28 And Ground
    G05212342

    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.
      TERMINAL CONTINUITY 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.
      TERMINAL CONTINUITY CHART

      A Ground Continuity
      Intelligent Key unit connector Terminal
      M32 28 No
      Fig 5: Checking Continuity Between Intelligent Key Unit Connector And TCM Connector
      G05212343

    OK or NG 

    OK: Replace TCM.

    NG: Repair or replace harness.

scientia non olet · About LEMON Manuals