Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001EACZ
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 - 02/2019]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): VSC OFF Switch Circuit; 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]

VSC OFF Switch Circuit

DESCRIPTION

The skid control ECU 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, the 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:

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

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o 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 power switch on (IG).

(c) Select the Data List on the Techstream.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; 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

TRAC/VSC Off Mode

TRC (TRAC)/VSC off mode

Normal, TRC OFF or VSC OFF

Normal: Normal mode

TRC OFF: TRC (TRAC) off mode

VSC OFF: VSC off mode

-

Chassis > ABS/VSC/TRAC > Data List

Tester Display

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

Not displayed

Does not come on

Pressing the VSC OFF switch

TRC (TRAC) OFF

Displayed

Does not come on

Pressing and holding the VSC OFF switch

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 is normal.

C

B

INSPECT METER / GAUGE SYSTEM

C

USE SIMULATION METHOD TO CHECK

A

2.

INSPECT VSC OFF SWITCH

(a) Turn the power switch off.

(b) Remove the VSC OFF switch.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VSC OFF SWITCH: REMOVAL

(c) Inspect the VSC OFF switch.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VSC OFF SWITCH: INSPECTION

OK:

The VSC OFF switch operates normally.

NG

REPLACE VSC OFF SWITCH

OK

3.

CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - VSC OFF SWITCH)

(a) Disconnect the A42 skid control ECU (brake booster with master cylinder assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A42-8 (CSW) - G36-5 (+)

Always

Below 1 Ω

A42-8 (CSW) or G36-5 (+) - Body ground

Always

10 kΩ or higher

G36-2 (E) - Body ground

Always

Below 1 Ω

HINT:

If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step.

Click here 2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): PROBLEM SYMPTOMS TABLE

OK

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR