4WS System Adjustment

4WS SYSTEM ADJUSTMENT

NOTE: If the power of the 4WS control unit was shut down for the following operations, start the engine and turn the steering wheel fully right and left.
- Battery removal/installation
- 4WS control unit removal/installation
- No.43 fuse CLOCK RADIO removal


ADJUST THE 4WS SYSTEM USING THE FOLLOWING PROCEDURE.




1. Jack up the car and place the wheel in the center of the turning radius gauge turn tables.
2. Set the steering wheel so that it is positioned in the center of the range where the steering wheel turns fully to the right and left. (This centers the front steering rack.)
3. If the steering wheel spoke angle is not at the designated angle with the steering wheel set in the position explained in step 2, adjust the front main steering angle sensor and spoke angle as follows.





^ Set the steering wheel in the straight driving position, then remove it.





^ Check whether the yellow paint mark of the front main steering angle sensor rotor is facing down (i.e. in neutral lock position where the rotor does not turn). This indicates that the front main steering angle sensor is electronically in neutral.

NOTE: If the paint mark is not facing down, temporarily install and turn the steering wheel so that the paint mark is facing down, then remove the steering wheel and reposition it so the spokes are nearly horizontal.





^ Install the steering wheel, aligning it with the serration which makes the spoke angle closest to horizontal.
- If the spoke angle is not horizontal, adjust the steering wheel slightly right or left, being careful not to push in on the steering wheel.

^ With the spoke angle set at horizontal, then push the steering wheel in fully.
Tighten the steering wheel nut while pushing the steering wheel in.

NOTE:
^ Do not remove the steering wheel until adjustment is completed.
^ Do not turn the steering wheel when pushing the steering wheel.





4. Be sure that the rear wheels are not steered to the right or left, but in the straight driving position.





5. Take out the service check connector (BLU 2P) from behind the center console. Connect the terminals with a piece of jumper wire.
6. Check the sub and main steering angle sensors using the table shown below.

NOTE:
^ Turn the ignition switch ON (engine OFF) to check.
^ The 4WS indicator light does not indicate the electronic neutral position when it is indicating problem codes.





^ Check the sensors by turning the specified wheel in the specified direction shown in the table above. The sensors are adjusted properly if the 4WS indicator light turns on in the specified range on the steering wheel, or if the center of the range where the 4WS indicator light blinks is within the specified range on the steering wheel.

7. If the sensors are not adjusted properly, adjust each sensor.
^ If the front main steering angle sensor is not adjusted properly, start with the step 2.
^ For front and rear sub steering angle sensor adjustment, refer to Sub Steering Angle Sensor Adjustment.
Sub Steering Angle Sensor Adjustment

^ The rear main steering angle sensor cannot be adjusted. If the rear main steering angle sensor is abnormal, remove it and check it for damage.