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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) (2 Of 2) >> DTC/Circuit Diagnosis >> DTC C13D6-00: Control Module >> EPS/DAST 3 >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK THE ANGLE SENSOR 

    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.