| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000028D8N |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): ABS Operates Before Necessary When Braking; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ] | ||
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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
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1. |
PERFORM DEALER MODE (SIGNAL CHECK) INSPECTION (SPEED SENSOR CHECK) |
(a) Connect the GTS to the DLC3.
(b) Turn the ignition switch to ON.
(c) Enter the following menus: Chassis / Brake/EPB / Utility / Signal Check.
(d) 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.
Click here
![2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): TEST MODE PROCEDURE](/t3Portal/stylegraphics/info.gif)
Chassis > Brake/EPB > Utility
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Tester Display |
|---|
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Signal Check |
OK:
Speed sensor Dealer Mode (Signal Check) inspection items change from incomplete to complete.
|
Result |
Proceed to |
|---|---|
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OK (for Front) |
A |
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OK (for Rear) |
B |
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NG |
C |
NOTICE:
- When cleaning the front speed sensor, make sure to clean the installation hole before installation.
- Do not use parts cleaner when cleaning the front speed sensor rotor.
HINT:
The rear speed sensor and rear speed sensor rotor are incorporated into the rear axle hub and bearing assembly.
If the rear speed sensor and rear speed sensor rotor need to be replaced, replace the rear axle hub and bearing assembly.
| A |
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CLEAN FRONT SPEED SENSOR AND FRONT SPEED SENSOR ROTOR |
| B |
|
REPLACE REAR AXLE HUB AND BEARING ASSEMBLY for Double Wishbone Type Suspension: Click here
for Torsion Beam Type Suspension: Click here
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| C |
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INSPECT AND REPAIR MALFUNCTIONING SPEED SENSOR CIRCUIT |
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