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Home >> Infiniti >> 2020 >> QX50 Essential, 4WD >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System (Direct Adaptive Steering) >> Basic Inspection >> DAST Calibration (Mode1) >> 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.
  • "DAST CALIBRATION (MODE1)" is additional service when removing/installing/replacing DAST parts or adjusting wheel alignment. "DAST CALIBRATION (MODE1)" is used in [Clutch phase learning] and [Steering rack neutral learning]. Using it incorrectly cause off-center. Refer to "ADDITIONAL SERVICE WHEN REPLACING OR REMOVING DAST PARTS" (Refer to Work Procedure .) and "TOE-IN ADJUSTMENT" [Refer to Inspection and Adjustment (alignment tester), Inspection and Adjustment (except alignment tester).] before performing it.
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.
  • When the work stops (CONSULT freezing etc,), re-perform the work from the first step.
  1. CONFIRM THAT STEERING WHEEL IS INDEXED CORRECTLY 
    1. Remove driver air bag module. Refer to Removal and Installation .
    2. Verify that the alignment index mark on the steering shaft (B) is in line with the index mark on the steering wheel (A).
      GNSALGIA0053Z-053Courtesy of NISSAN NORTH AMERICA, INC.

    Is the steering wheel indexed correctly?

    YES

    Reinstall driver air bag module. Refer to Removal and Installation . GO TO 2.

    NO

    Remove steering wheel and realign correctly. Refer to Removal and Installation . GO TO 2

  2. CONFIRM THAT STEERING SHAFT IS INDEXED CORRECTLY 

    Confirm that steering shaft is indexed correctly. Perform "INSPECTION AFTER INSTALLATION". Refer to Removal and Installation .

    Is the steering shaft indexed correctly?

    YES

    GO TO 3.

    NO

    Disconnect the lower joint from the steering gear and realign correctly. Refer to Removal and Installation . GO TO 3.

  3. PREPARATION BEFORE DAST CALIBRATION 
    1. Set the front wheel on the turn table.
      NOTE: Do not lift up the vehicle during "DAST CALIBRATION (MODE1)"
    2. Check that inner socket length is in the specified value. Refer to Removal and Installation -- Inner socket .
    3. Connect the battery charger to protect the battery.
      NOTE: Much electricity is used in "DAST CALIBRATION (MODE1)".
    4. Place the tilt to the highest level.

    GO TO 4.

  4. DAST CALIBRATION (MODE1) 

    SYMBOL CONSULT

    1. Erase self-diagnostic result for "EPS/DAST 3", "DAST 1" and "DAST 2".
    2. On the CONSULT screen, select "EPS/DAST 3">>"WORK SUPPORT">>"DAST CALIBRATION (MODE1)".
    3. Touch "START".
      CAUTION: Be careful for the moving parts, steering wheel and front wheels are steered automatically when touch "START".
      NOTE:
      • When DTC is detected, "WORK SUPPORT" may not be started. When DTC is detected, check the DTC. Refer to DTC Index .
      • When "DAST CALIBRATION (MODE1)" is completed, the clutch is released.
    4. After checking that the power steering warning lamp turns off, turn the steering wheel to the straight-ahead position. Then touch "START".
      CAUTION:
      • Be careful in turning the steering wheel to the straight-ahead position.
      • Since the force feedback of steering becomes smaller after the completion of auto steering, take good care for turning the steering.
      NOTE: The clutch is engaged and then the steering shaft connects to steering gear.
    5. Touch "END".
      CAUTION: Never turn the ignition switch OFF.

    Inspection End.

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