LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System (Direct Adaptive Steering) (DTC/Circuit Diagnosis) (1 Of 2) >> DTC/Circuit Diagnosis >> C13BD-00 Control Module IGN Power Sup >> DAST 1 >> DTC Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Diagnosis Procedure

  1. CHECK CAN WAKE UP CIRCUIT 
      1. Ignition switch OFF.
      2. Disconnect steering force control module connector and steering angle main control module 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
        E141 23 E149 23 Yes

    Is the inspection result normal?

    YES>>

    GO TO 2.

    NO>>

    Repair or replace malfunctioning component.

  2. CHECK STEERING ANGLE MAIN CONTROL MODULE SIGNAL 
    1. SYMBOL CONSULT
      1. Connect steering force control module connector and steering angle main control module connector.
      2. Ignition switch ON.
      3. Select "SUB IGN VOLTAGE" in "Data Monitor" mode of "DAST 1".
      4. Check the value.
        Monitor item Standard value(Approx.)
        SUB IGN VOLTAGE Battery voltage

    Is the inspection result normal?

    YES>>

    GO TO 3.

    NO>>

    Replace steering force control module. Refer to Removal and Installation .

  3. PERFORM SELF-DIAGNOSIS FOR STEERING ANGLE MAIN CONTROL MODULE 
    1. SYMBOL CONSULT
      1. Ignition switch OFF.
      2. Connect steering angle main control module connector.
      3. Ignition switch ON.
      4. Erase "Self Diagnostic Result" mode of "DAST 1".
      5. Ignition switch OFF and wait for at least 10 seconds.
      6. Start the engine.
        CAUTION:

        Never drive the vehicle.

      7. Select "Self Diagnostic Result" mode of "DAST 1".

    Is DTC "C13BD-00" detected?

    YES>>

    Replace steering angle main control module. Refer to Removal and Installation .

    NO>>