Additional Service When Replacing Control Unit

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: Description
^ Perform 4WAS front actuator adjustment after replacing 4WAS front control unit.
^ Perform 4WAS front actuator adjustment when performing any service below.
- 4WAS front actuator and the steering components (including wheel alignment) removal. Refer to STC-27, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT: Special Repair Requirement (Pattern 1)". 4WAS Front Actuator Neutral Position Adjustment

CAUTION:
^ Check the following items before the removal:
- 4WAS warning lamp is turned OFF after the engine starts.
- Self-diagnosis of each control unit of 4WAS system (4WAS front control unit/4WAS main control unit) is performed. Check that 4WAS system is controlled properly.

- 4WAS front actuator and the steering components (including wheel alignment) installation. Refer to STC-28, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT: Special Repair Requirement (Pattern 2)". 4WAS Front Actuator Neutral Position Adjustment
- 4WAS front control unit and the steering angle sensor replacement. Refer to STC-28, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT: Special Repair Requirement (Pattern 1)". 4WAS Front Actuator Neutral Position Adjustment
- When driving while misaligning the steering wheel position (center) after installing 4WAS front actuator. Refer to STC-30, "4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT: Special Repair Requirement (Pattern 4)". 4WAS Front Actuator Neutral Position Adjustment