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Home >> Infiniti >> 2021 >> Q50 Pure, AWD >> Repair and Diagnosis (Single Page) >> Steering >> Steering Control Systems >> Steering Control System (DTCS) (2 Of 2) >> DAST 1 (Steering Angle Main Control Module) >> DTC C13DC-00: Steering Torque Sensor >> DTC Diagnosis Procedure >> Direct Adaptive Steering System
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Direct Adaptive Steering System

  1. CHECK TORQUE SENSOR POWER SUPPLY CIRCUIT 

    SYMBOL With CONSULT

    1. Turn the ignition switch ON.
    2. On the CONSULT screen, select "DAST 1">>"DATA MONITOR">>"TORQUE SEN VOLTAGE".
    3. Check the value. Refer to Values On The Diagnosis Tool .

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Perform the trouble diagnosis for 12 V battery power supply circuit.

  2. CHECK TORQUE SENSOR GROUND CIRCUIT 
    1. Turn the ignition switch OFF.
    2. Disconnect steering angle main control module harness connector.
    3. Check the continuity between control module harness connector and ground.

      Steering angle main control module

      --

      Continuity

      Connector

      Terminal

      E26

      32

      Ground

      Existed

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair open circuit or short to ground or short to power in harness or connectors.

  3. CHECK TORQUE SENSOR SIGNAL 

    SYMBOL With CONSULT

    1. Connect steering angle main control module harness connector.
    2. Start the engine.
      CAUTION: Never drive the vehicle.
    3. On the CONSULT screen, select "DAST 1">>"DATA MONITOR">>"TORQUE SEN MAIN 2", and "TORQUE SEN SUB".
    4. Check the value. Refer to Values On The Diagnosis Tool .

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    GO TO 4.

  4. CHECK TORQUE SENSOR CIRCUIT 
    1. Turn the ignition switch OFF.
    2. Disconnect steering angle main control module harness connector.
    3. Disconnect steering torque sensor harness connector.
    4. Check the continuity between steering angle main control module harness connector and steering torque sensor harness connector.

      Steering angle main control module

      Steering torque sensor

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      E26

      8

      E95

      2

      Existed

      1

      4

      3

      3

      7

      1

    5. Check the continuity between steering torque sensor connector terminals.

      Steering torque sensor

      Continuity

      Terminal

      3

      4

      Not existed

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

      Steering angle main control module

      --

      Continuity

      Connector

      Terminal

      E26

      8

      Ground

      Not existed

      1

      3

      7

    Is the inspection result normal?

    YES

    Torque sensor is malfunction. Replace steering gear assembly. Refer to STEERING GEAR AND LINKAGE : Removal & Installation .

    NO

    Repair open circuit or short to ground or short to power in harness or connectors.

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

    Is the inspection result normal?

    YES

    Replace steering angle main control module. Refer to STEERING ANGLE MAIN CONTROL MODULE : Removal & Installation .

    NO

    Repair or replace error-detected part.