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Home >> Infiniti >> 2023 >> QX55 Essential >> Repair and Diagnosis (Single Page) >> Steering >> Steering Control Systems >> Steering Control System (Direct Adaptive Steering) (DTC/Circuit Diagnosis) (1 Of 2) >> DTC/Circuit Diagnosis >> DTC C13AA-00: Control Module >> DAST 1 >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK THE MOTOR CIRCUIT 
    1. Ignition switch OFF.
    2. Disconnect steering angle main control module connector and steering angle main motor connector.
    3. Check the continuity between steering angle main control module harness connector and steering angle main motor harness connector.

      Steering angle main control module

      Steering angle main motor

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      E230

      35

      E237

      2

      Yes

      36

      3

      37

      1

    4. Check the continuity between steering angle main control module harness connector and ground.

      Steering angle main control module

      --

      Continuity

      Connector

      Terminal

      E230

      35

      Ground

      No

      36

      37

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace malfunctioning component.

  2. CHECK INTERMITTENT INCIDENT 
    1. Check enlarged contact spring of terminal. Refer to How to Check Terminal .
    2. Perform intermittent incident while turning steering wheel. Refer to Intermittent Incident .

    Is the inspection result normal?

    YES

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

    NO

    Repair or replace malfunctioning component.