LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2015 >> Q50 Base, AWD >> Repair and Diagnosis (Single Page) >> Steering >> Steering Control Systems >> Steering Control System - Direct Adaptive Steering (Inspection) (Exc Hybrid) >> Basic Inspection >> Additional Service When Replacing Control Module >> Work Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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 STEP 2  .

  2. 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 STEP 3  .

  3. 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 STEP 4  .

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

    With CONSULT 

    1. Turn the ignition switch ON.
      CAUTION:

      Never start the engine.

    2. Perform "DAST CALIBRATION (MODE1)". Refer to WORK PROCEDURE .

    GO TO STEP 5  .

  5. 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 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 STEP 6  .

  6. 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. Refer to DTC INDEX (EPS/DAST 3), DTC INDEX (DAST 1), DTC INDEX (DAST 2).

    NO 

    GO TO STEP 7  .

  7. 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.
      Monitor item Standard value
      ANGLE 1 - 4.4 ≤ ANGLE 1 ≤ 4.4

    Is the confirmation result normal?

    YES 

    WORK END

    NO 

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

scientia non olet · About LEMON Manuals