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Home >> Infiniti >> 2021 >> QX50 Essential, 4WD >> Repair and Diagnosis >> Steering >> Steering Column >> Steering System >> Direct Adaptive Steering >> Basic Inspection >> Toe-In Adjustment >> Inspection and Adjustment
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Inspection and Adjustment

WARNING: Never move the vehicle during "DAST CALIBRATION (MODE1)" because the steering gear is held in neutral position until ignition switch is placed 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.
  • Never move the vehicle until the toe-in adjustment is finished.
  1. PREPARATION 
    1. Set the vehicle to alignment tester. Then set the front wheel on the turn table of 4 wheel alignment tester.
      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)".

    GO TO 2.

  2. ECU CONFIGURATION 

    SYMBOL CONSULT

    1. Connect the CONSULT.
    2. Ignition switch ON.
      CAUTION: Never start the engine.
    3. Perform configuration for steering force control module. Refer to Work Procedure .
      NOTE: The replacement of control module included in configuration is not required.
    4. Perform configuration for steering angle main control module. Refer to Work Procedure .
      NOTE: The replacement of control module included in configuration is not required.
    5. Perform configuration for steering angle sub control module. Refer to Work Procedure .
      NOTE: The replacement of control module included in configuration is not required.
    6. Ignition switch OFF.

    GO TO 3.

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

    SYMBOL CONSULT

    1. Ignition switch ON.
      CAUTION: Never start the engine.
    2. Select "EPS/DAST 3">>"Work support">>"DAST CALIBRATION (MODE 1)". Refer to Description .
    3. Ignition switch OFF.
      CAUTION: Be sure to perform this step.

    GO TO 4.

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

    SYMBOL CONSULT

    1. Ignition switch ON.
      CAUTION: Never start the engine.
    2. Select "EPS/DAST 3">>"Work support">>"DAST CALIBRATION (MODE 1)". Refer to Description .

    GO TO 5.

  5. TOE-IN ADJUSTMENT 

    Adjust toe-in according to the specified value.

    Toe-in

    : Refer to Wheel Alignment (Unladen1) .
    CAUTION:
    • Always evenly adjust both toe-in alternately and adjust the difference between the left and right to the standard.
    • Always fix the steering inner socket when tightening the steering outer socket.
    • Never touch the steering wheel during toe-in adjustment.
    NOTE: Steering gear is held in neutral position until ignition switch is placed OFF.

    GO TO 6.

  6. ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION 

    SYMBOL CONSULT

    1. 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. Place the ignition switch OFF, and then place it ON again.
      CAUTION: Be sure to perform this step.

    GO TO 7.

  7. PERFORM SELF-DIAGNOSIS 

    SYMBOL CONSULT

    1. Place the ignition switch OFF and wait at least 10 seconds.
    2. Start the engine.
      CAUTION: Never drive the vehicle.
    3. Select "Self Diagnostic Result" mode of "EPS/DAST 3", "DAST 1" and "DAST 2".

    Is any DTC detected?

    YES

    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. Place the ignition switch OFF to ON.
      CAUTION: Never start the engine.
    2. 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

    GO TO 9.

    NO

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

  9. CHECK INNER SOCKET LENGTH 
    1. Check that inner socket length is in the specified value. Refer to Steering Gear .

    Is the inspection result normal?

    YES

    GO TO 10.

    NO

    GO TO 1.

  10. STEERING ANGLE INSPECTION 
    1. Start the engine.
    2. Fully steer right and left. And check that the knock sound does not exist from the steering rack.
      CAUTION: Never confuse the knock sound with the clutch sound that is heard from nearby of steering column.

    Is the inspection result normal?

    YES

    Word End.

    NO

    GO TO 11.

  11. CHECK SUSPENSION AND STEERING PARTS INSTALLATION CONDITION 
    1. Check suspension and steering parts installation condition.

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Install suspension and steering parts properly. Then perform the toe-in adjustment again. GO TO 1.

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