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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis (Single Page) >> Steering >> Steering Control Systems >> Steering Control System (Direct Adaptive Steering) (DTC/Circuit Diagnosis) (2 Of 2) >> DTC/Circuit Diagnosis >> C13D4-00 Control Module >> EPS/DAST 3 >> DTC Diagnosis Procedure
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DTC Diagnosis Procedure

  1. CHECK THE ANGLE SENSOR 
    1. Check the force motor angle sensor. Refer to Component Inspection .

    Is the inspection result normal?

    YES>>

    GO TO 2.

    NO>>

    Force motor angle sensor is malfunctioning. Replace steering column assembly. Refer to Removal and Installation .

  2. CHECK THE SENSOR CIRCUIT 
      1. Disconnect steering force control module connector and force motor angle sensor connector.
      2. Check the continuity between steering force control module harness connector and force motor angle sensor harness connector.
        Steering force control module Force motor angle sensor Continuity
        Connector Terminal Connector Terminal
        E141 10 M330 1 Yes
        11 5
        6 4
        5 8
        4 2
        2 6
      3. Check the continuity between steering force control module harness connector and ground.
        Steering force control module - Continuity
        Connector Terminal
        E141 10 Ground No
        11
        6
        5
        4
        2

    Is the inspection result normal?

    YES>>

    GO TO 3.

    NO>>

    Repair or replace malfunctioning component.

  3. 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 force control module. Refer to Removal and Installation .

    NO>>

    Repair or replace malfunctioning component.