| Last Modified: 08-22-2025 | 6.11:8.1.0 | Doc ID: RM0000003TPCL9K |
| Model Year Start: 2026 | Model: Corolla | Prod Date Range: [08/2025 - ] |
| Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): Brake Warning Light (Yellow) Remains On; 2026 MY Corolla Corolla HV [08/2025 - ] | ||
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Brake Warning Light (Yellow) Remains On |
DESCRIPTION
This procedure is for troubleshooting when the brake warning light (yellow) remains on but no DTCs are output.
The skid control ECU (brake actuator assembly) controls the brake warning light (yellow) in the combination meter assembly via CAN communication.
PROCEDURE
|
1. |
CHECK VEHICLE CONTROL HISTORY (ELECTRIC PARKING BRAKE SYSTEM) |
(a) Using the GTS, check for Vehicle Control History.
Click here
![2023 - 2026 MY Corolla Corolla HV [11/2022 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): VEHICLE CONTROL HISTORY (RoB)](/t3Portal/stylegraphics/info.gif)
Chassis > Brake/EPB > Utility
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Tester Display |
|---|
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Vehicle Control History (RoB) |
HINT:
If vehicle control history is stored when the electric parking brake system is suspended, the brake warning light (yellow) illuminates.
|
Result |
Proceed to |
|---|---|
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There is no vehicle control history for when the electric parking brake system was suspended. |
A |
|
There is vehicle control history for when the electric parking brake system was suspended. |
B |
| B |
|
PERFORM TROUBLESHOOTING AND REPAIR REGARDING VEHICLE CONTROL HISTORY NOTICE: After performing troubleshooting and repair regarding vehicle control history, clear the vehicle control history. |
|
|
2. |
CHECK VEHICLE SPECIFICATION |
(a) Check the vehicle specification.
|
Result |
Proceed to |
|---|---|
|
Combination Meter Assembly (except 12.3 Inch Display) |
A |
|
Combination Meter Assembly (for 12.3 Inch Display) |
B |
| B |
|
|
|
3. |
INSPECT COMBINATION METER ASSEMBLY (BRAKE WARNING LIGHT (YELLOW)) |
(a) Perform the Active Test of the combination meter assembly using the GTS.
Click here
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
ECB Warning |
(b) Check the combination meter assembly.
OK:
The brake warning light (yellow) turns on or off in accordance with GTS operation.
| OK |
|
| NG |
|
|
4. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Perform the Active Test of the combination meter assembly using the GTS.
Click here
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Multi Display All (White) |
(b) Check the combination meter assembly.
OK:
The multi-information display in the combination meter assembly turns on according to the operation of the Active Test.
| OK |
|
| NG |
|
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