| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000026OJS |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [09/2022 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): C124A05; Braking System information System Programming Failure; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 - ] | ||
|
DTC |
C124A05 |
Braking System information System Programming Failure |
DESCRIPTION
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C124A05 |
Braking System information System Programming Failure |
When the vehicle speed is 40 km/h (25 mph) or more, one of the following conditions is met:
|
|
PROCEDURE
|
1. |
CHECK PART NUMBER (ECM) |
(a) Check that the proper ECM is installed.
OK:
Proper ECM is installed.
| NG |
|
REPLACE ECM
|
|
|
2. |
CHECK PART NUMBER (BRAKE ACTUATOR ASSEMBLY) |
(a) Check that the proper skid control ECU (brake actuator assembly) is installed.
OK:
Proper skid control ECU (brake actuator assembly) is installed.
| NG |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
|
|
3. |
CLEAR SYSTEM INFORMATION |
(a) Clear system information.
HINT:
Click here
![2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): UTILITY](/t3Portal/stylegraphics/info.gif)
Chassis > Brake/EPB > Utility
|
Tester Display |
|---|
|
Reset Memory |
|
|
4. |
SYSTEM INFORMATION MEMORIZATION |
(a) Perform system information memorization.
HINT:
Click here
Chassis > Brake/EPB > Utility
|
Tester Display |
|---|
|
Calibration |
HINT:
After performing "Reset Memory" using the GTS to clear the memorized value of the skid control ECU (brake actuator assembly), DTC C124A05 will be stored until system information memorization is performed.
|
|
5. |
CLEAR DTC |
(a) None
(b) Clear the DTCs.
Chassis > Brake/EPB > Clear DTCs
(c) Turn the ignition switch off.
|
|
6. |
RECONFIRM DTC |
(a) Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
(b) Check if the same DTC is output.
Chassis > Brake/EPB > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTC C124A05 is not output. |
A |
|
DTC C124A05 is output. |
B |
| A |
|
END |
| B |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
|
|