Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001HG9K
Model Year Start: 2019 Model: RAV4 Prod Date Range: [02/2019 - 12/2021]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): Brake Warning Light does not Come ON; 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]

Brake Warning Light does not Come ON

DESCRIPTION

The skid control ECU (brake booster with master cylinder assembly) is connected to the combination meter assembly via CAN communication.

CAUTION / NOTICE / HINT

NOTICE:

When replacing the skid control ECU (brake booster with master cylinder assembly), perform initialization and calibration of the linear solenoid valve.

Click here 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): UTILITY

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE WARNING LIGHT / RED (MALFUNCTION))

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Select the Active Test on the Techstream.

Click here 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): DATA LIST / ACTIVE TEST

Chassis > ABS/VSC/TRAC > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Brake Warning Light

Brake warning light / red (malfunction)

Warning light ON/OFF

Observe combination meter assembly

(d) Select the Data List on the Techstream.

Click here 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): DATA LIST / ACTIVE TEST

Chassis > ABS/VSC/TRAC > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Brake Warning Light

Brake warning light / red (malfunction)

ON or OFF

ON: Warning light on

OFF: Warning light off

-

Chassis > ABS/VSC/TRAC > Active Test

Active Test Display

Brake Warning Light

Data List Display

Brake Warning Light

(e) Check the operating condition of the brake warning light / red (malfunction) when operating it using the Techstream.

Result

Proceed to

Brake warning light / red (malfunction) in the Data List does not change using the Active Test.

A

Brake warning light / red (malfunction) in the Data List turns ON/OFF using the Active Test.

B

A

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; BRAKE SYSTEM (OTHER): BRAKE BOOSTER (w/o Vacuum Brake Booster): REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; BRAKE SYSTEM (OTHER): BRAKE BOOSTER (w/o Vacuum Brake Booster): REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; BRAKE SYSTEM (OTHER): BRAKE BOOSTER (w/o Vacuum Brake Booster): REMOVAL

B

2.

INSPECT COMBINATION METER ASSEMBLY

(a) Turn the ignition switch off.

(b) Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream.

Click here 2019 - 2020 MY RAV4 RAV4 HV [11/2018 - 08/2020]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: DATA LIST / ACTIVE TEST 2021 - 2022 MY RAV4 RAV4 HV [08/2020 - 10/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: DATA LIST / ACTIVE TEST

Body Electrical > Combination Meter > Active Test

Tester Display

Brake Warning

(c) Check the combination meter assembly.

OK:

The brake warning light / red (malfunction) turns on or off in accordance with the Techstream operation.

OK

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; BRAKE SYSTEM (OTHER): BRAKE BOOSTER (w/o Vacuum Brake Booster): REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; BRAKE SYSTEM (OTHER): BRAKE BOOSTER (w/o Vacuum Brake Booster): REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; BRAKE SYSTEM (OTHER): BRAKE BOOSTER (w/o Vacuum Brake Booster): REMOVAL

NG

INSPECT METER / GAUGE SYSTEM