ABS Operates Before Necessary When Braking [04/2018 - 08/2020]: Procedure
WARNING: This page is about a different car, the 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- PERFORM TEST MODE (SIGNAL CHECK) INSPECTION (SPEED SENSOR CIRCUIT)
- Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Utility / Signal Check.
- Using the Techstream, perform a Test Mode (Signal Check) inspection sensor check and check that speed sensor Test Mode (Signal Check) inspection items change from incomplete to complete.
Refer to TEST MODE PROCEDURE [04/2018 - 08/2020]
Chassis > ABS/VSC/TRAC/EPB > Utility
Tester Display Signal Check OK
Speed sensor Test Mode (Signal Check) inspection items change from incomplete to complete.
Result
Result Proceed to OK (for Front) A OK (for Rear) B NG C NOTE:- 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.
Result:
A
CLEAN FRONT SPEED SENSOR AND FRONT SPEED SENSOR ROTOR
Result:
B
REPLACE REAR AXLE HUB AND BEARING ASSEMBLY. Refer to REMOVAL [04/2018 - 08/2021]
Result:
C
INSPECT AND REPAIR MALFUNCTIONING SPEED SENSOR CIRCUIT