- Vehicle Control History (RoB) are stored
- EPS warning light illuminates
| Last Modified: 07-31-2024 | 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)
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Replaced Part or Performed Procedure |
Necessary Procedure |
Effect/Inoperative Function when Necessary Procedure not Performed |
Link |
|---|---|---|---|
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power steering ECU assembly |
Update ECU security key |
Vehicle Control History (RoB) are stored |
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ECU configuration |
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Perform power steering ECU initial setting (assist map writing) |
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End position initial setting |
- |
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Necessary Procedures After Parts Removed/Installed/Replaced (for Gasoline Model)
|
Replaced Part or Performed Procedure |
Necessary Procedure |
Effect/Inoperative Function when Necessary Procedure not Performed |
Link |
|---|---|---|---|
|
power steering ECU assembly |
for G16E-GTS
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Vehicle Control History (RoB) are stored |
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for G16E-GTS
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for G16E-GTS
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except G16E-GTS
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Vehicle Control History (RoB) are stored |
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except G16E-GTS
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except G16E-GTS
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except G16E-GTS
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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 |
Necessary Procedures |
Link |
|---|---|---|
|
Front Camera System |
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)
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Effect/Inoperative Function when Necessary Procedure not Performed |
Necessary Procedures |
Link |
|---|---|---|
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*1: for GR Model
*2: except GR Model |
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Front Camera System |
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Learning completes when vehicle is operated normally (for Gasoline Model)
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Effect/Inoperative Function when Necessary Procedure not Performed |
Necessary Procedures |
Link |
|---|---|---|
| *1: for Hatchback | ||
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
- 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 8 Inch Display Type (w/ Single Knob Type) or 10.5 Inch Display 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 8 Inch Display Type (w/ Single Knob Type) or 10.5 Inch Display Type))
PROCEDURE
1. REMOVE STEERING COLUMN ASSEMBLY
Click here
![2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ]; STEERING COLUMN: STEERING COLUMN ASSEMBLY: REMOVAL](/t3Portal/stylegraphics/info.gif)
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:
- Do not drop the power steering ECU assembly, strike it with tools or subject it to impacts.
- If the power steering ECU assembly is subjected to an impact, replace it with a new one.
- Do not pull the wire harness of the electric power steering column sub-assembly.
- Do not allow any moisture to come into contact with the power steering ECU assembly.
- Do not loosen any bolts not mentioned in the procedure.
- Do not allow any foreign matter to contaminate the power steering ECU assembly.
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(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
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(a) Remove the electric power steering motor shaft damper from the electric power steering column sub-assembly. |
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