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Home >> Infiniti >> 2017 >> Q60 Base, AWD >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System (Direct Adaptive Steering) (Basic Inspection And DTCS) >> DTC / Circuit Diagnosis >> DTC C13A8-00: Back Up Circuit >> DAST 2 >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

  1. CHECK STEERING ANGLE SUB CONTROL MODULE SIGNAL

    G-20With CONSULT 

    1. Turn the ignition switch ON.
    2. On the CONSULT screen, select "DAST 2">>"DATA MONITOR">>"BACK UP SIG 1 VOLT".
    3. Check the value
      Monitor item Standard value (Approx.)
      BACK UP SIG 1 VOLT 0.5 - 4.75 V

    Is the inspection result normal?

    YES 

    GO TO STEP 4  .

    NO 

    GO TO STEP 2  .

  2. CHECK THE BACK UP SIGNAL CIRCUIT

    1. Turn the ignition switch OFF
    2. Disconnect each control module harness connector.
    3. Check the continuity between both control module harness connectors.
      CHECK THE CONTINUITY BETWEEN BOTH CONTROL MODULE HARNESS CONNECTORS

      Steering angle sub control module Steering angle main control module Continuity
      Connector Terminal Connector Terminal
      E29 17 E26 22 Existed
    4. Check the continuity between steering angle sub control module harness connector and ground.
      CHECK THE CONTINUITY BETWEEN STEERING ANGLE SUB CONTROL MODULE HARNESS CONNECTOR AND GROUND

      Steering angle sub control module - Continuity
      Connector Terminal
      E29 17 Ground Not existed

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace error - detected part.

  3. PERFORM SELF - DIAGNOSIS

    G-20With CONSULT 

    1. Connect each control module harness connector.
    2. Start the engine.
      CAUTION:

      Never drive the vehicle.

    3. Perform self-diagnosis for "DAST 1".

    Is any DTC is detected?

    YES 

    Check the DTC. Refer to DTC INDEX .

    NO 

    GO TO STEP 4  .

  4. CHECK INTERMITTENT INCIDENT

    1. Turn the ignition switch OFF
    2. Check enlarged contact spring of terminal. Refer to HOW TO CHECK TERMINAL .
    3. Perform intermittent incident while turning steering wheel. Refer to INTERMITTENT INCIDENT .

    Is the inspection result normal?

    YES 

    Replace steering angle sub control module. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace error - detected part.