Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001EABJ
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): ABS Operates Before Necessary When Braking; 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]

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.

CAUTION / NOTICE / HINT

NOTICE:

  • After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.

    Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): TEST MODE PROCEDURE

  • After replacing or removing and installing a speed sensor rotor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.

    Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): TEST MODE PROCEDURE

PROCEDURE

1.

PERFORM DEALER MODE (SIGNAL CHECK) INSPECTION (SPEED SENSOR CHECK)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Enter the following menus: Chassis / Brake/EPB / Utility / Signal Check.

(d) Using the Techstream, perform a Dealer Mode (Signal Check) inspection sensor check and check that speed sensor Test Mode (Signal Check) inspection items change from incomplete to complete.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): TEST MODE PROCEDURE

Chassis > Brake/EPB > Utility

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 and for 2WD)

B

OK (for Rear and for AWD)

C

NG

D

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

CLEAN FRONT SPEED SENSOR AND FRONT SPEED SENSOR ROTOR
B

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; AXLE AND DIFFERENTIAL: REAR AXLE HUB: REMOVAL 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; AXLE AND DIFFERENTIAL: REAR AXLE HUB: REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; AXLE AND DIFFERENTIAL: REAR AXLE HUB: REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; AXLE AND DIFFERENTIAL: REAR AXLE HUB: REMOVAL 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; AXLE AND DIFFERENTIAL: REAR AXLE HUB: REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; AXLE AND DIFFERENTIAL: REAR AXLE HUB: REMOVAL 2024 MY RAV4 RAV4 HV [10/2023 -        ]; AXLE AND DIFFERENTIAL: REAR AXLE HUB: REMOVAL

C

CLEAN REAR SPEED SENSOR AND REAR SPEED SENSOR ROTOR
D

INSPECT AND REPAIR MALFUNCTIONING SPEED SENSOR CIRCUIT