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Home >> Infiniti >> 2020 >> QX50 Autograph, 4WD >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System (Direct Adaptive Steering) >> Basic Inspection >> Additional Service When Replacing Control Module >> Work Procedure
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Work Procedure

WARNING: Never move the vehicle during "DAST CALIBRATION (MODE1)" because the steering gear is held in neutral position until ignition switch is turned OFF.
CAUTION:
  • Be careful for the moving parts, steering wheel and front wheels are steered automatically when start "DAST CALIBRATION (MODE1)".
  • Do not rotate road wheels during the DAST calibration because the system is detected the vehicle running.
  1. PREPARATION 
    1. Set the front wheel on the turn table.
      NOTE: Do not lift up the vehicle during "DAST CALIBRATION (MODE1)"
    2. Connect the battery charger to protect the 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 2.

  2. ECU CONFIGURATION 

    SYMBOL 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 3.

  3. PREPARATION BEFORE DAST CALIBRATION 

    Confirm that rear cap projection of steering gear is aligned in the center of the lower joint. Perform "INSPECTION AFTER INSTALLATION." Refer to Removal and Installation

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair as necessary, GO TO 4.

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

    SYMBOL CONSULT

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

    GO TO 5.

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

    SYMBOL CONSULT

    Perform "DAST CALIBRATION (MODE1)". Refer to Description .

    GO TO 6.

  6. ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION 

    SYMBOL 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 approx. 10 seconds, select "END".
    4. Turn ignition switch OFF, and then turn it ON again.
      CAUTION: Be sure to perform this step.

    GO TO 7.

  7. PERFORM SELF-DIAGNOSIS 

    SYMBOL 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 Perform trouble diagnosis for the detected DTC. Refer to DTC Index  (EPS/DAST 3), DTC Index  (DAST 1), DTC Index  (DAST 2).

    NO

    GO TO 8.

  8. FINAL CONFIRMATION 

    SYMBOL 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.

      Monitor item

      Standard value

      ANGLE 1

      -4.4 ≤ ANGLE 1 ≥ 4.4

    Is the confirmation result normal?

    YES

    Inspection End.

    NO

    Slightly lower the tilt position, and then re-perform Work Procedure .

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