Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001KGX5 |
Model Year Start: 2020 |
Model: GR Corolla |
Prod Date Range: [09/2019 - 09/2022] |
Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model): CALIBRATION; 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [09/2019 - 09/2022] |
CALIBRATION
POWER STEERING ECU INITIAL SETTING (TORQUE SENSOR ZERO POINT CALIBRATION AND ASSIST MAP WRITING) (USING TECHSTREAM)
NOTICE:
If any of the following conditions are met, perform Power Steering ECU Initial Setting (torque sensor zero point calibration and assist map writing):
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The power steering ECU with motor assembly has been replaced.
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The electric power steering column sub-assembly has been replaced.
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There is a difference in steering effort between turning left and right.
(a) Perform Power Steering ECU Initial Setting (torque sensor zero point calibration and assist map writing).
(1) Align the front wheels straight ahead and center the steering wheel.
(2) Turn the ignition switch off.
(3) Connect the Techstream to the DLC3.
(4) Turn the ignition switch to ON.
(5) Turn the Techstream on.
(6) Enter the following menus: Chassis / EMPS / Utility / Power Steering ECU Initial Setting.
Chassis > EMPS > Utility
Tester Display
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Power Steering ECU Initial Setting
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NOTICE:
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Do not turn the steering wheel sharply.
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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.
(7) Check for RoBs.
Click here
Chassis > EMPS > Utility
Tester Display
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Vehicle Control History (RoB)
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NOTICE:
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).
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