Direct Adaptive Steering System

When replacing steering force control module, steering angle main control module, or steering angle sub control module, configuration and DAST calibration are required.

1. CHECK OFF-CENTER (1) 

   With CONSULT

   1. Set the vehicle to the straight-ahead position.
   2. Turn the ignition switch ON.
      CAUTION: Never start the engine.
   3. On the CONSULT screen, select "EPS/DAST 3">>"DATA MONITOR">>"ST ANGLE SENSOR", and then and then check the value. Refer to Values On The Diagnosis Tool .

   Is the inspection result normal?

   YES

   GO TO 2.

   NO

   • Refer to Diagnosis Procedure . to correct off-center and then, GO TO 2.
     CAUTION: Proceeding to the next step with off-center bigger than 120 Deg. causes the spiral cable to be torn off.
2. PREPARATION 
   1. Set the front wheel on the turn table.
      NOTE: Do not lift up the vehicle during "DAST CALIBRATION (MODE1)"
   2. Connect the 12V battery charger to protect the 12V battery.
      NOTE: Much electricity is used in "DAST CALIBRATION (MODE1)".
   3. Connect the CONSULT.
   4. Turn the ignition switch ON.
      CAUTION: Never start the engine.

   GO TO 3.

3. ECU CONFIGURATION 

   With CONSULT

   1. Perform configuration for steering force control module. Refer to Work Procedure .
   2. Perform configuration for steering angle main control module. Refer to Work Procedure .
   3. Perform configuration for steering angle sub control module. Refer to Work Procedure .

   GO TO 4.

4. DAST CALIBRATION (MODE1) [CLUTCH PHASE LEARNING] 

   With CONSULT

   1. Perform "DAST CALIBRATION (MODE1)". Refer to Work Procedure .
   2. Turn the ignition switch OFF.
      CAUTION: Be sure to perform this step.

   GO TO 5.

5. CHECK OFF-CENTER (2) 

   With CONSULT

   NOTE: This confirmation is procedure to confirm that the steering wheel is not rotated 360 Deg. when performing the DAST calibration.
   CAUTION: Proceeding to the next step with the steering wheel rotated 360 Deg. causes the spiral cable to be torn off.
   1. Turn the ignition switch ON.
      CAUTION: Never start the engine.
   2. On the CONSULT screen, select "EPS/DAST 3">>"DATA MONITOR">>"ST ANGLE SENSOR", and then and then check the value. Refer to Values On The Diagnosis Tool .

   Is the inspection result normal?

   YES

   GO TO 7.

   NO

   GO TO 6.

6. CORRECT STEERING WHEEL NEUTRAL POSITION 

   With CONSULT

   1. Separate steering upper shaft from steering clutch assembly. And then, turn the steering wheel to the direction that the value returns to 0 Deg. with checking "ST ANGLE SENSOR" on "DATA MONITOR".
   2. Connect steering clutch assembly and steering upper shaft. Refer to STEERING SHAFT .

   Re-perform the work from configuration to reset the learning information of clutch phase learning. GO TO 3.

7. DAST CALIBRATION (MODE1) [STEERING RACK NEUTRAL POSITION LEARNING] 

   With CONSULT

   Perform "DAST CALIBRATION (MODE1)". Refer to Work Procedure .

   GO TO 8.

8. ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION 

   With CONSULT

   1. On the CONSULT screen, select "ABS">>"WORK SUPPORT">>"ST ANGLE SENSOR ADJUSTMENT".
   2. Touch START.
      CAUTION: Never touch steering wheel while adjusting steering angle sensor.
   3. After approximately 10 seconds, select "END".
   4. Turn ignition switch OFF, and then turn it ON again.
      CAUTION: Be sure to perform this step.

   GO TO 9.

9. PERFORM SELF-DIAGNOSIS 

   With CONSULT

   1. Turn ignition switch OFF and wait at least 10 seconds.
   2. Start the engine.
      CAUTION: Never drive the vehicle.
   3. Perform self-diagnosis for "EPS/DAST 3", "DAST 1" and "DAST 2".

   Is any DTC detected?

   YES

   When other than above DTC is detected, perform trouble diagnosis for the detected DTC.

   • EPS/DAST 3: Refer to DTC Index .
   • DAST 1: Refer to DTC Index .
   • DAST 2: Refer to DTC Index .

   NO

   GO TO 10.

10. FINAL CONFIRMATION 

    With CONSULT

    1. Turn the ignition switch OFF to ON.
       CAUTION: Never start the engine.
    2. On the CONSULT screen, select "EPS/DAST 3">>"DATA MONITOR">>"ANGLE 1", and then and then check the value. Refer to Values On The Diagnosis Tool .

    Is the confirmation result normal?

    YES

    WORK END

    NO

    Slightly lower the tilt position, and then re-perform "DAST CALIBRATION (MODE1)". GO TO 3.