Memorizing the Steering Angle Sensor Neutral Position

1. Perform the toe inspection/adjustment for ATTS.
2. Set the steering wheel in the straight a head position.
3. Attach a piece of masking tape to the top of the steering wheel as shown.





4. Secure a piece of stiff wire (coat hanger) to the top of the dashboard as shown so the wire end points at the highest point of the steering wheel.
5. Start the engine, and drive the vehicle straight ahead.
6. When the vehicle is running straight ahead, mark the point on the steering wheel where the wire end is pointing.
7. Stop the vehicle and turn the ignition switch off.

NOTE: The point where the marked point on the steering wheel aligns with the wire end is the straight driving position of the steering wheel. This position should be the reference for inspection and adjustment of the ATTS.

8. Perform the DTC indication. Be sure that no DTC is memorized in the ATTS control unit.

NOTE:
- Erase a DTC if it is indicated.
- Be sure to hold the SCS service connector connected.





9. Apply parking brake firmly.





10. Set the steering wheel in the straight driving position.





11. Turn the ignition~switch ON (II), but do not start the engine. Release the parking brake, then apply the parking brake again. Repeat this procedure twice within 4 seconds.





12. Be sure that the ATTS indicator blinks once, then stays on.





13. Turn the steering wheel slowly from the straight driving position to the right until the ATTS indicator light goes off. Be sure that the indicator light went off, and return the steering wheel to the straight driving position. The ATTS indicator light should come on when the steering wheel returns to the straight driving position.





14. Turn the steering wheel slowly from the straight driving position to the left until the ATTS indicator light goes off. Be sure that the indicator light went off, and return the steering wheel to the straight driving position.
15. Perform the steps 13 and 14 again.
16. Hold the steering wheel in the straight driving position securely. This is the position the ATTS control unit will memorize.





17. Release the parking brake, then apply the parking brake again.





18. Make sure the steering angle sensor neutral position was is memorized in the control unit. Turn the steering wheel to the right and left. The ATTS indicator light should come on at the memorized neutral position. The ATTS system is normal if the ATTS indicator light comes on at the straight driving position initially marked on the steering wheel. If the light does come on at the straight driving position, turn the ignition switch off and on, and repeat the memorization procedure from the beginning.





19. Release the parking brake. The ATTS indicator light should blink 5 times indicating that memorization of the neutral position is completed. If the ATTS indicator light blinks quickly while performing this procedure, repeat the procedure from the step 9.
20. Disconnect the SCS service connector, and remove the masking tape and stiff wire.