| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM10000000214Q3 |
| Model Year Start: 2022 | Model: RAV4 | Prod Date Range: [12/2021 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): C124A00; ECM Communication; 2022 - 2025 MY RAV4 RAV4 HV [12/2021 - ] | ||
|
DTC |
C124A00 |
ECM Communication |
DESCRIPTION
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Note |
|---|---|---|---|---|---|
|
C124A00 |
ECM Communication |
Either of the following is detected:
|
|
Does not come on |
Output ECU: No. 2 skid control ECU (brake actuator assembly) |
C124A00 DTC Detection Conditions
|
Vehicle Condition |
|||
|---|---|---|---|
|
Pattern 1 |
Pattern 2 |
||
|
Diagnosis Condition |
- |
- |
- |
|
Malfunction Status |
The engine type, powertrain variation and destination information sent from the hybrid vehicle control ECU do not match the information stored in the No. 2 skid control ECU (brake actuator assembly) |
○ |
- |
|
No system information stored in the No. 2 skid control ECU (brake actuator assembly) |
- |
○ |
|
|
Detection Time |
- |
- |
|
|
Number of Trips |
1 trip |
1 trip |
|
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
CAUTION / NOTICE / HINT
NOTICE:
After replacing the No. 2 skid control ECU (brake actuator assembly), perform "Calibration" after performing "Reset Memory".
Click here
![2022 - 2025 MY RAV4 RAV4 HV [12/2021 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): UTILITY](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
CHECK PART NUMBER (HYBRID VEHICLE CONTROL ECU) |
(a) Check that the proper hybrid vehicle control ECU is installed.
OK:
Proper hybrid vehicle control ECU is installed.
| NG |
|
REPLACE HYBRID VEHICLE CONTROL ECU
|
|
|
2. |
CHECK PART NUMBER (BRAKE ACTUATOR ASSEMBLY) |
(a) Check that the proper No. 2 skid control ECU (brake actuator assembly) is installed.
OK:
Proper No. 2 skid control ECU (brake actuator assembly) is installed.
| NG |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
|
|
3. |
SYSTEM INFORMATION MEMORIZATION |
(a) Perform system information memorization.
Click here
Chassis > Brake/EPB > Utility
|
Tester Display |
|---|
|
Reset Memory |
Chassis > Brake/EPB > Utility
|
Tester Display |
|---|
|
Calibration |
HINT:
After performing "Reset Memory" using the GTS to clear the memorized value of the No. 2 skid control ECU (brake actuator assembly), DTC C124A00 will be stored until system information memorization is performed.
|
|
4. |
CLEAR DTC |
(a) Clear the DTCs.
Chassis > Brake/EPB > Clear DTCs
(b) Turn the ignition switch off.
|
|
5. |
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 C124A00 is not output. |
A |
|
DTC C124A00 is output. |
B |
| A |
|
END |
| B |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
|
|