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Home >> Infiniti >> 2018 >> Q60 Pure, AWD >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System - Direct Adaptive Steering (DTCS, Symptom Diagnosis & Removal And Installation) >> DTC/Circuit Diagnosis >> C13AA-00 Control Module >> EPS/DAST 3 >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK THE MOTOR CIRCUIT 
    1. Turn the ignition switch OFF.
    2. Disconnect steering force control module and steering force motor harness connector.
    3. Check the continuity between control module harness connector and motor harness connector.

      Steering force control module

      Steering force motor

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M151

      35

      M153

      1

      Existed

      36

      2

      37

      3

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

      Steering force control module

      --

      Continuity

      Connector

      Terminal

      M151

      35

      Ground

      Not existed

      36

      37

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair or replace error-detected part.

  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 force control module. Refer to Removal and Installation .

    NO

    Repair or replace error-detected part.