Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001HZR7 |
Model Year Start: 2020 |
Model: GR Corolla |
Prod Date Range: [03/2019 - 09/2019] |
Title: POWER ASSIST SYSTEMS: POWER STEERING ECU: REMOVAL; 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2019] |
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during power steering ECU with motor assembly removal/installation are shown below.
Necessary Procedures After Parts Removed/Installed/Replaced (for HV Model)
Replaced Part or Performed Procedure
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Necessary Procedure
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Effect/Inoperative Function when Necessary Procedure not Performed
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Link
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Disconnect cable from negative auxiliary battery terminal
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Perform steering sensor zero point calibration
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Lane Control System
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Pre-collision System
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Power steering ECU with motor assembly
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Perform torque sensor zero point calibration and assist map writing
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DTCs are output
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Steering effort different between turning steering wheel left and right
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EPS warning light illuminates
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Necessary Procedures After Parts Removed/Installed/Replaced (for Gasoline Model)
Replaced Part or Performed Procedure
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Necessary Procedure
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Effect/Inoperative Function when Necessary Procedure not Performed
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Link
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Disconnect cable from negative auxiliary battery terminal
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Perform steering sensor zero point calibration
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Lane Control System
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Pre-collision System
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Lighting System (w/ AFS)(EXT)
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Initialize back door lock*1
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Power Door Lock Control System
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Power steering ECU with motor assembly (for Hatchback)
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Perform torque sensor zero point calibration
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Assist map writing
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DTCs are output
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Steering effort different between turning steering wheel left and right
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EPS warning light illuminates
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Power steering ECU with motor assembly (for Sedan)
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Perform torque sensor zero point calibration and assist map writing
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DTCs are output
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Steering effort different between turning steering wheel left and right
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EPS warning light illuminates
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NOTICE:
for HV Model:
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After the power switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Audio and Visual System (for HV Model))
for Gasoline Model:
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After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) battery terminal. (for Navigation System and Audio and Visual System (for Gasoline Model))
PROCEDURE
1. REMOVE STEERING COLUMN ASSEMBLY
Click here
2. REMOVE UPPER STEERING COLUMN BRACKET WITH SWITCH ASSEMBLY (w/o Smart Key System)
Click here
3. REMOVE STEERING LOCK ACTUATOR ASSEMBLY (w/ Smart Key System)
Click here
4. REMOVE POWER STEERING ECU WITH MOTOR ASSEMBLY
NOTICE:
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Do not drop the power steering ECU with motor assembly, strike it with tools or subject it to impacts.
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If the power steering ECU with motor assembly is subjected to an impact, replace it with a new one.
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Do not pull the wire harness of the electric power steering column sub-assembly.
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Do not allow any moisture to come into contact with the power steering ECU with motor assembly.
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Do not loosen any bolts not mentioned in the procedure.
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Do not allow any foreign matter to contaminate the power steering ECU with motor assembly.
(a) Disconnect the connector.
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(b) Remove the 2 bolts and power steering ECU with motor assembly from the electric power steering column sub-assembly.
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5. REMOVE ELECTRIC POWER STEERING MOTOR SHAFT DAMPER
(a) Remove the electric power steering motor shaft damper from the electric power steering column sub-assembly.
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