Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000028UTL |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 -
] |
Title: POWER ASSIST SYSTEMS: POWER STEERING ECU: REMOVAL; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] |
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 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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power steering ECU assembly
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Update ECU security key
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Vehicle Control History (RoB) are stored
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ECU configuration
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Vehicle Control History (RoB) are stored
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EPS warning light illuminates
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Perform power steering ECU initial setting (assist map writing)
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Vehicle Control History (RoB) are stored
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EPS warning light illuminates
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End position initial setting
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-
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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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power steering ECU assembly
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Vehicle Control History (RoB) are stored
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Vehicle Control History (RoB) are stored
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EPS warning light illuminates
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for G16E-GTS
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Perform power steering ECU initial setting (torque sensor zero point calibration and assist map writing)
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Vehicle Control History (RoB) are stored
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EPS warning light illuminates
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Vehicle Control History (RoB) are stored
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Vehicle Control History (RoB) are stored
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EPS warning light illuminates
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except G16E-GTS
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Perform power steering ECU initial setting (assist map writing)
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Vehicle Control History (RoB) are stored
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EPS warning light illuminates
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except G16E-GTS
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End position initial setting
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-
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CAUTION / NOTICE / HINT
HINT:
When the cable is disconnected / reconnected to the battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.
Learning completes when vehicle is driven (for HV Model)
Effect/Inoperative Function when Necessary Procedure not Performed
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Necessary Procedures
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Link
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Front Camera System
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Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 second or more.
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Learning completes when vehicle is driven (for Gasoline Model)
Effect/Inoperative Function when Necessary Procedure not Performed
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Necessary Procedures
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Link
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Front Camera System
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Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.*1
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Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 second or more.*2
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Learning completes when vehicle is operated normally (for Gasoline Model)
Effect/Inoperative Function when Necessary Procedure not Performed
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Necessary Procedures
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Link
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Power Door Lock Control System
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Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.
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NOTICE:
for HV 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 3 minutes before disconnecting the cable from the negative (-) auxiliary battery terminal.
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When the cable is disconnected from the negative (-) auxiliary battery terminal and the security lock setting has been enabled, multi-display operations will be disabled upon next startup unless the password is entered. Be sure to check the security lock setting before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Audio and Visual System (for Single Knob Type))
for Gasoline Model
-
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 3 minutes before disconnecting the cable from the negative (-) auxiliary battery terminal.
-
When the cable is disconnected from the negative (-) auxiliary battery terminal and the security lock setting has been enabled, multi-display operations will be disabled upon next startup unless the password is entered. Be sure to check the security lock setting before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Audio and Visual System (for Single Knob Type))
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 with Steering Lock Actuator Assembly)
Click here
4. REMOVE POWER STEERING ECU ASSEMBLY
NOTICE:
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Do not drop the power steering ECU assembly, strike it with tools or subject it to impacts.
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If the power steering ECU 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 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 assembly.
(a) Disconnect the connector.
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(b) Remove the 2 bolts and power steering ECU 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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