| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000028D7R |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - 08/2023] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): C124A00; Non-learning of the Braking System information; 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 08/2023] | ||
|
DTC |
C124A00 |
Non-learning of the Braking System information |
DESCRIPTION
If the vehicle information stored by the skid control ECU (brake actuator assembly) does not match that sent from the ECM or a new skid control ECU (brake actuator assembly) is installed and the vehicle information has not been stored, this DTC is stored.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C124A00 |
Non-learning of the Braking System information |
Engine, drive source and destination information sent from the ECM does not match the information of the skid control ECU or there is no information in memory. |
|
PROCEDURE
|
1. |
CHECK PART NUMBER (ECM) |
(a) Check that the proper ECM is installed.
OK:
Proper ECM is installed.
(b) Check if the ECM was replaced before the DTC was stored.
OK:
ECM was not replaced.
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (A proper ECM is not installed and/or the ECM was replaced.) |
B |
| B |
|
REPLACE ECM
|
![2023 MY Corolla Corolla Hatchback [11/2022 - 03/2023]; M20A-FKS (ENGINE CONTROL): ECM: REMOVAL](/t3Portal/stylegraphics/info.gif)
|
|
2. |
CHECK PART NUMBER (BRAKE ACTUATOR ASSEMBLY) |
(a) Check that a proper skid control ECU (brake actuator assembly) is installed.
OK:
Proper skid control ECU (brake actuator assembly) is installed.
(b) Check if the skid control ECU (brake actuator assembly) had been replaced before the DTC was stored.
OK:
Skid control ECU (brake actuator assembly) had not been replaced.
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (The skid control ECU (brake actuator assembly) had been replaced.) |
B |
|
NG (A proper skid control ECU (brake actuator assembly) is not installed.) |
C |
| A |
|
| C |
|
|
|
3. |
CONFIRM SYSTEM INFORMATION STORAGE |
(a) Check that Store System Information (acceleration sensor zero point calibration and system information memorization) has been performed.
OK:
Store System Information has been performed.
HINT:
After installing a new skid control ECU (brake actuator assembly), DTCs C051D54 and C124A00 will be stored until system variant learning (acceleration sensor zero point calibration and system information memorization) is performed.
| OK |
|
| NG |
|
PERFORM ACCELERATION SENSOR ZERO POINT CALIBRATION AND SYSTEM INFORMATION MEMORIZATION |
|
|