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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Steering >> Power Steering >> Steering System (Direct Adaptive Steering) >> Basic Inspection >> Toe-In Adjustment >> Alignment Tester >> Inspection and Adjustment

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: SYMBOL Do not lift up the vehicle during "DAST CALIBRATION (MODE1)".
      2. Connect the battery charger to protect the battery.
        NOTE: SYMBOL Much electricity is used in "DAST CALIBRATION (MODE1)".

    >>

    GO TO 2.

  2. ECU CONFIGURATION 
    1. SYMBOL CONSULT
      1. Ignition switch ON.
        CAUTION:

        Never start the engine.

      2. Perform configuration for steering force control module. Refer to Work Procedure .
        NOTE: SYMBOL The replacement of control module included in configuration is not required.
      3. Perform configuration for steering angle main control module. Refer to Work Procedure .
        NOTE: SYMBOL The replacement of control module included in configuration is not required.
      4. Perform configuration for steering angle sub control module. Refer to Work Procedure .
        NOTE: SYMBOL The replacement of control module included in configuration is not required.
      5. Ignition switch OFF.

    >>

    GO TO 3.

  3. DAST CALIBRATION (MODE1) [CLUTCH PHASE LEARNING] 
    1. SYMBOL CONSULT
      1. Ignition switch ON.
        CAUTION:

        Never start the engine.

      2. Select "DAST CALIBRATION (MODE1)" in "Work support" mode of "EPS/DAST 3". 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] 
    1. SYMBOL CONSULT
      1. Ignition switch ON.
        CAUTION:

        Never start the engine.

      2. Select "DAST CALIBRATION (MODE1)" in "Work support" mode of "EPS/DAST 3". Refer to Description .

    >>

    GO TO 5.

  5. TOE-IN ADJUSTMENT 
    1. 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: SYMBOL Steering gear is held in neutral position until ignition switch is placed OFF.

    >>

    GO TO 6.

  6. ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION 
    1. SYMBOL CONSULT
      1. Select "ST ANGLE SENSOR ADJUSTMENT" in "Work support" mode of "ABS".
      2. Touch START.
        CAUTION:

        Never touch steering wheel while adjusting steering angle sensor.

      3. After approx. 10 seconds, select "END".
      4. Ignition switch OFF, and then place it ON again.
        CAUTION:

        Be sure to perform this step.

    >>

    GO TO 7.

  7. PERFORM SELF DIAGNOSTIC RESULT 
    1. SYMBOL CONSULT
      1. 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 
    1. SYMBOL CONSULT
      1. Ignition switch OFF to ON.
        CAUTION:

        Never start the engine.

      2. Select "ANGLE 1" in "Data Monitor" mode of "EPS/DAST 3" and 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 

    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 

    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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