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Home >> Infiniti >> 2008 >> G37 Base >> Repair and Diagnosis >> Steering >> Power Steering >> Steering Control System (With 4WAS) >> Basic Inspection >> Inspection And Adjustment >> 4WAS Front Actuator Neutral Position Adjustment >> 4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair Requirement (Pattern 3)

4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : Special Repair Requirement (Pattern 3)

  1. PERFORM ACTIVE TEST (LOCK OPERATION)

    With CONSULT-III 

    1. Stop the vehicle to the straight-ahead position.
    2. Turn the ignition switch ON.
      CAUTION: Never start the engine.
    3. Select "LOCK OPERATION" item on "ACTIVE TEST" of 4WAS front control unit.
    4. Perform "RELEASE" of "ACTIVE TEST".
      CAUTION:
      • Turn the steering wheel 90°. Check that the front wheels do not move.
      • Never turn the steering wheel during "RELEASE".
    5. Turn the steering wheel to adjust "4WAS STR ANG" of the 4WAS front control unit "DATA MONITOR" so that it falls within the range shown below:

      4WAS STR ANG : -3.5 - 3.5 deg 

    6. Perform "LOCK" item on "ACTIVE TEST" of 4WAS front control unit.
    7. Steer 30° leftward slowly. Steer 30° rightward and return the steering wheel to the straight-ahead position.
    8. Finish 4WAS front control unit active test.

    GO TO  2.

  2. STEERING ANGLE SENSOR NEUTRAL POSITION ADJUSTMENT
    1. Perform the steering angle sensor neutral position adjustment. Refer to "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : SPECIAL REPAIR REQUIREMENT ".
    2. Turn the ignition switch OFF.

    GO TO  3.

  3. RETURN TO 4WAS FRONT ACTUATOR INITIAL POSITION
    1. Start the engine.
      CAUTION: Stop the vehicle.
    2. Steer 90° leftward slowly. Then steer 90° rightward.
    3. Steer 90° leftward slowly again. Then steer 90° rightward. Return the steering wheel to the straight-ahead position.
    4. Stop the vehicle in the straight-ahead position after driving for a period of time. (When engine is running)

    GO TO  4.

  4. CHECK 4WAS FRONT ACTUATOR INSPECTION

    With CONSULT-III 

    1. Check "4WAS STR ANG" item on "DATA MONITOR" of 4WAS front control unit.
      CAUTION: Never touch the steering wheel during the service.

      4WAS STR ANG : -3.5 - 3.5 deg 

    2. Turn the ignition switch OFF.

    Is the inspection result normal? 

    YES: GO TO  5.

    NO: GO TO  1.

  5. PERFORM ACTIVE TEST (SLOW MODE)

    With CONSULT-III 

    1. Start the engine.
      CAUTION: Stop the vehicle.
    2. Select "SLOW MODE" item on "ACTIVE TEST" of 4WAS front control unit.
    3. Perform "MODE START" of "ACTIVE TEST".
    4. Steer the steering wheel leftward slowly until the turning stops.
    5. Steer the steering wheel rightward slowly until the turning stops.

    Is "OK" indicated on both right and left on "SLOW MODE"? 

    YES: GO TO  6.

    NO: Refer to "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT : SPECIAL REPAIR REQUIREMENT (PATTERN 4) ".

  6. PERFORM SELF-DIAGNOSIS (4WAS FRONT CONTROL UNIT)

    With CONSULT-III 

    Perform 4WAS front control unit self-diagnosis.

    Is any error system detected? 

    YES: Check the error system.

    NO: GO TO  7.

  7. ERASE ERROR HISTORY

    With CONSULT-III 

    Erase the memory of 4WAS main control unit and 4WAS main control unit self-diagnosis result.

    END

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