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Home >> Infiniti >> 2013 >> EX37 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 32 (Security Control System) >> Component Diagnosis >> DTC B210A: Steering Lock Condition Switch >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECTION START 

    Check the case in which DTC is detected.

    • Case 1: It is detected after ignition switch is changed from OFF to ON
    • Case 2: It is detected after ignition switch is changed from ON to OFF and door switch is pressed

    In which case is DTC detected? 

    Case 1: GO TO  2.

    Case 2: GO TO  6.

  2. CHECK BCM OUTPUT SIGNAL 
    1. Turn ignition switch OFF.
    2. Disconnect steering lock unit connector and IPDM E/R connector E5.
    3. Check voltage between steering lock unit harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      (+) (-) Voltage (V) (Approx.)
      Steering lock unit
      Connector Terminal
      M40 8 Ground Battery voltage

    Is the inspection result normal? 

    YES: GO TO  4.

    NO: GO TO  3.

  3. CHECK STEERING LOCK UNIT CIRCUIT-1 
    1. Disconnect BCM connector M122.
    2. Check continuity between steering lock unit harness connector and BCM harness connector.
      TERMINALS CONTINUITY REFERENCE

      Steering lock unit BCM Continuity
      Connector Terminal Connector Terminal
      M40 8 M122 98 Existed
    3. Check continuity between steering lock unit harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      Steering lock unit Ground Continuity
      Connector Terminal
      M40 8 Not existed

    Is the inspection result normal? 

    YES: GO TO  10.

    NO: Repair or replace harness or connector.

  4. CHECK IPDM E/R OUTPUT SIGNAL 
    1. Connect IPDM E/R connector.
    2. Disconnect BCM connector M122.
    3. Check voltage between steering lock unit harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      (+) (-) Voltage (V) (Approx.)
      Steering lock unit
      Connector Terminal
      M40 8 Ground Battery voltage

    Is the inspection result normal? 

    YES: Replace steering lock unit.

    NO: GO TO  5.

  5. CHECK STEERING LOCK UNIT CIRCUIT-2 
    1. Disconnect IPDM E/R connector E5.
    2. Check continuity between steering lock unit harness connector and IPDM E/R harness connector.
      TERMINALS CONTINUITY REFERENCE

      Steering lock unit IPDM E/R Continuity
      Connector Terminal Connector Terminal
      M40 8 E5 33 Existed
    3. Check continuity between steering lock unit harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      Steering lock unit Ground Continuity
      Connector Terminal
      M40 8 Not existed

    Is the inspection result normal? 

    YES: GO TO  10.

    NO: Repair or replace harness or connector.

  6. CHECK BCM OUTPUT SIGNAL 
    1. Turn ignition switch OFF.
    2. Disconnect steering lock unit connector and IPDM E/R connector E5.
    3. Check voltage between steering lock unit harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      (+) (-) Voltage (V) (Approx.)
      Steering lock unit
      Connector Terminal
      M40 3 Ground Battery voltage

    Is the inspection result normal? 

    YES: GO TO  8.

    NO: GO TO  7.

  7. CHECK STEERING LOCK UNIT CIRCUIT-3 
    1. Disconnect BCM connector M122.
    2. Check continuity between steering lock unit harness connector and BCM harness connector.
      TERMINALS CONTINUITY REFERENCE

      Steering lock unit BCM Continuity
      Connector Terminal Connector Terminal
      M40 3 M122 97 Existed
    3. Check continuity between steering lock unit harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      Steering lock unit Ground Continuity
      Connector Terminal
      M40 3 Not existed

    Is the inspection result normal? 

    YES: GO TO  10.

    NO: Repair or replace harness or connector.

  8. CHECK IPDM E/R OUTPUT SIGNAL 
    1. Connect IPDM E/R connector.
    2. Disconnect BCM connector 122.
    3. Check voltage between steering lock unit harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      (+) (-) Voltage (V) (Approx.)
      Steering lock unit
      Connector Terminal
      M40 3 Ground Battery voltage

    Is the inspection result normal? 

    YES: Replace steering lock unit.

    NO: GO TO  9.

  9. CHECK STEERING LOCK UNIT CIRCUIT-4 
    1. Disconnect IPDM E/R connector E5.
    2. Check continuity between steering lock unit harness connector and IPDM E/R harness connector.
      TERMINALS CONTINUITY REFERENCE

      Steering lock unit IPDM E/R Continuity
      Connector Terminal Connector Terminal
      M40 3 E5 32 Existed
    3. Check continuity between steering lock unit harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      Steering lock unit Ground Continuity
      Connector Terminal
      M40 3 Not existed

    Is the inspection result normal? 

    YES: GO TO  10.

    NO: Repair or replace harness or connector.

  10. CHECK INTERMITTENT INCIDENT 

    Refer to INTERMITTENT INCIDENT .

    INSPECTION END 

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