| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM10000000260SM |
| 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): ABS Operates Before Necessary When Braking; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 - ] | ||
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ABS Operates Before Necessary When Braking |
DESCRIPTION
Troubleshooting for when ABS operates too soon due to a noisy signal from the speed sensor, a difference in output, etc.
PROCEDURE
|
1. |
PERFORM DEALER MODE (SIGNAL CHECK) INSPECTION (SPEED SENSOR CHECK) |
(a) Using the GTS, perform a Dealer Mode (Signal Check) inspection sensor check and check that speed sensor Dealer Mode (Signal Check) inspection items change from incomplete to complete.
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![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): TEST MODE PROCEDURE](/t3Portal/stylegraphics/info.gif)
Chassis > Brake/EPB > Utility
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Tester Display |
|---|
|
Signal Check |
OK:
Speed sensor Dealer Mode (Signal Check) inspection items change from incomplete to complete.
|
Result |
Proceed to |
|---|---|
|
OK (for Front) |
A |
|
OK (for Rear) |
B |
|
NG |
C |
NOTICE:
- When cleaning the front speed sensor and rear speed sensor, make sure to clean the installation hole before installation.
- Do not use parts cleaner when cleaning the front speed sensor rotor and rear speed sensor rotor.
| A |
|
CLEAN FRONT SPEED SENSOR AND FRONT SPEED SENSOR ROTOR |
| B |
|
CLEAN REAR SPEED SENSOR AND REAR SPEED SENSOR ROTOR |
| C |
|
INSPECT AND REPAIR MALFUNCTIONING SPEED SENSOR CIRCUIT |
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