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Home >> Infiniti >> 2024 >> Q50 Luxe, AWD >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System (DTCS) (1 Of 2) >> DAST 1 (Steering Angle Main Control Module) >> C13BD-00 Control Module IGN Power Sup >> DTC Diagnosis Procedure
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DTC Diagnosis Procedure

  1. CHECK CAN WAKE UP CIRCUIT 
    1. Turn the ignition switch OFF.
    2. Disconnect steering force control module harness connector and steering angle main control module harness connector.
    3. Check the continuity between steering force control module harness connector and steering angle main control module harness connector.
      Steering force control module Steering angle main control module Continuity
      Connector Terminal Connector Terminal
      M71 23 E26 23 Existed

    Is the inspection result normal?

    YES>>

    GO TO 2.

    NO>>

    Repair / replace harness or connector.

  2. CHECK STEERING ANGLE MAIN CONTROL MODULE SIGNAL 

    SYMBOL With CONSULT

    1. Connect steering force control module harness connector and steering angle main control module harness connector.
    2. Turn the ignition switch ON.
    3. On the CONSULT screen, select "DAST 1">>"DATA MONITOR">>"SUB IGN VOLTAGE".
    4. Check the value. Refer to Values On The Diagnosis Tool .

    Is the inspection result normal?

    YES>>

    GO TO 3.

    NO>>

    Replace steering force control module. Refer to STEERING FORCE CONTROL MODULE : Removal and Installation .

  3. PERFORM SELF-DIAGNOSIS FOR STEERING ANGLE MAIN CONTROL MODULE 

    SYMBOL With CONSULT

    1. Turn the ignition switch OFF.
    2. Connect steering angle main control module harness connector.
    3. Turn the ignition switch ON.
    4. Erase self-diagnosis for "DAST 1".
    5. Turn the ignition switch OFF and wait for at least 10 seconds.
    6. Start the engine.
      CAUTION:

      Never drive the vehicle.

    7. Perform self-diagnosis for "DAST 1".

    Is DTC "C13BD-00" detected?

    YES>>

    Replace steering angle main control module. Refer to STEERING ANGLE MAIN CONTROL MODULE : Removal and Installation .

    NO>>

    • Check enlarged contact spring of terminal. Refer to Inspection .
    • Perform intermittent incident while turning steering wheel. Refer to Inspection .