POWER STEERING ECU INITIAL SETTING (TORQUE SENSOR ZERO POINT CALIBRATION AND ASSIST MAP WRITING) (USING GTS)
If any of the following conditions are met, perform Power Steering ECU Initial Setting (torque sensor zero point calibration and assist map writing):
The power steering ECU assembly has been replaced.
The electric power steering column sub-assembly has been replaced.
There is a difference in steering effort between turning left and right.
Perform Power Steering ECU Initial Setting (torque sensor zero point calibration and assist map writing).
Align the front wheels straight ahead and center the steering wheel.
Enter the following menus: Chassis / EMPS / Utility / Power Steering ECU Initial Setting.
| Tester Display |
|---|
| Power Steering ECU Initial Setting |
Do not turn the steering wheel sharply.
During the torque sensor zero point calibration the steering wheel will shudder. Do not touch the steering wheel until at least 3 seconds have elapsed after the shuddering has stopped.
Check for RoBs.
| Tester Display |
|---|
| Vehicle Control History (RoB) |
When Power Steering ECU Initial Setting (torque sensor zero point calibration and assist map writing) are completed, make sure to check for vehicle control history (RoB).
END POSITION INITIAL SETTING
Perform end position initial setting after replacing or servicing parts related to steering operation.