Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM1000000026WVE
Model Year Start: 2023 Model: RAV4 Prod Date Range: [10/2022 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): VSC OFF Switch Circuit; 2023 - 2024 MY RAV4 RAV4 HV [10/2022 -        ]

VSC OFF Switch Circuit

DESCRIPTION

The No. 2 skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication.

Pressing the VSC OFF switch turns off TRAC operation, and pressing and holding this switch turns off TRAC and VSC operation. If TRAC and VSC operations are turned off, the "Traction Control Turned Off" 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 No. 2 skid control ECU (brake actuator assembly), perform "Calibration" after performing "Reset Memory".

Click here 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): UTILITY

PROCEDURE

1.

READ VALUE USING GTS (TRAC/VSC OFF MODE)

(a) Check that the indicator light and mode condition on the GTS change according to VSC OFF switch operation.

Chassis > Brake/EPB > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

TRC(TRAC)/VSC OFF Mode

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): 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

Standard:

Switch Operation

Mode Condition Display

Multi-information Display (Traction Control Turned Off)

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

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; 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 A105 No. 2 skid control ECU (brake actuator assembly) connector.

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

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A105-9 (CSW) - G36-5 (+)

Always

Below 1 Ω

A105-9 (CSW) or G36-5 (+) - Body ground

Always

10 kΩ or higher

G36-2 (E) - Body ground

1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR