Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM1000000026WVC
Model Year Start: 2023 Model: RAV4 Prod Date Range: [10/2022 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): VSC OFF Switch Circuit; 2023 - 2024 MY RAV4 RAV4 HV [10/2022 -        ]

VSC OFF Switch Circuit

DESCRIPTION

The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication.

Pressing the VSC OFF switch turns off TRC (TRAC) operation, and pressing and holding this switch turns off TRC (TRAC) and VSC operation. If TRC (TRAC) and VSC operations are turned off, "TRC (TRAC) OFF message" will be displayed on the multi-information display and the VSC OFF indicator light will come on.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.

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

PROCEDURE

1.

READ VALUE USING TECHSTREAM (TRC(TRAC)/VSC OFF MODE)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Enter the following menus: Chassis / Brake/EPB / Data List.

Chassis > Brake/EPB > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

TRC(TRAC)/VSC OFF Mode

TRC (TRAC)/VSC off mode

Normal mode (TRC (TRAC) ON/VSC ON) /

TRC (TRAC) OFF mode (TRC (TRAC) OFF/VSC ON) /

Not defined /

VSC OFF mode (TRC (TRAC) OFF/VSC OFF)

Normal mode (TRC (TRAC) ON/VSC ON): Normal mode

TRC (TRAC) OFF mode (TRC (TRAC) OFF/VSC ON): TRC (TRAC) off mode

Not defined: Not defined

VSC OFF mode (TRC (TRAC) OFF/VSC OFF): VSC off mode

-

Chassis > Brake/EPB > Data List

Tester Display

TRC(TRAC)/VSC OFF Mode

(d) Check the indicator light and mode condition on the Techstream changes according to VSC OFF switch operation.

Standard:

Switch Operation

Mode Condition Display

Multi-information Display ("TRC (TRAC) OFF message")

VSC OFF Indicator Light

Not pressed

Normal mode (TRC (TRAC) ON/VSC ON)

Not displayed

Does not come on

Pressing the VSC OFF switch

TRC (TRAC) OFF mode (TRC (TRAC) OFF/VSC ON)

Displayed

Does not come on

Pressing and holding the VSC OFF switch

VSC OFF mode (TRC (TRAC) OFF/VSC OFF)

Displayed

Comes on

Result

Proceed to

Indicator light and mode condition display do not change

A

Mode condition display is normal, but indicator light does not change

B

Indicator light and mode condition display are normal

C

B

INSPECT METER / GAUGE SYSTEM

C

USE SIMULATION METHOD TO CHECK

A

2.

INSPECT VSC OFF SWITCH

(a) Inspect the VSC OFF switch.

Click here BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS > VSC OFF SWITCH > INSPECTION

NG

REPLACE VSC OFF SWITCH

OK

3.

CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - VSC OFF SWITCH)

(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:

The connector is securely connected.

(b) Disconnect the A39 skid control ECU (brake actuator assembly) connector.

(c) Disconnect the G36 VSC OFF switch connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

G36-5 (+) - A39-38 (CSW)

Always

Below 1 Ω

G36-5 (+) or A39-38 (CSW) - Body ground

Always

10 kΩ or higher

G36-2 (E) - Body ground

Always

Below 1 Ω

OK

REPLACE BRAKE ACTUATOR ASSEMBLY 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (w/ Vacuum Brake Booster): REMOVAL 2024 MY RAV4 RAV4 HV [10/2023 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (w/ Vacuum Brake Booster): REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR