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Home >> Infiniti >> 2021 >> QX50 Essential, 4WD >> Repair and Diagnosis (Single Page) >> Steering >> Steering Control Systems >> Steering Control System (Direct Adaptive Steering) (2 Of 2) >> DTC/Circuit Diagnosis >> DTC C13BD-00: Control Module IGN Power Sup >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK CAN WAKE UP CIRCUIT 
    1. 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

      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 

    SYMBOL CONSULT

    1. Connect steering force control module harness connector and steering angle main control module harness connector.
    2. Ignition switch ON.
    3. On the CONSULT screen, select "DAST 1">>"DATA MONITOR">>"SUB IGN VOLTAGE".
    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 

    SYMBOL CONSULT

    1. Ignition switch OFF.
    2. Connect steering angle main control module harness 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