| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM10000000214RP |
| Model Year Start: 2022 | Model: RAV4 | Prod Date Range: [12/2021 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): VSC does not Operate or VSC does not Operate Correctly; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ] | ||
|
VSC does not Operate or VSC does not Operate Correctly |
DESCRIPTION
When ABS, TRAC, VSC or trailer sway control is operating, the No. 2 skid control ECU (brake actuator assembly) blinks the slip indicator light to inform the driver that slippage occurred.
When a communication malfunction with the hybrid vehicle control ECU is detected, TRAC and VSC are disabled. Also, TRAC and VSC are disabled when a DTC is stored.
When in VSC off mode, or TRAC and VSC are disabled, the multi-information display in the combination meter assembly displays "Traction Control Turned Off" and the VSC OFF indicator light illuminates to inform the driver.
CAUTION / NOTICE / HINT
NOTICE:
After replacing or reinstalling the yaw rate and acceleration sensor (airbag ECU 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](/t3Portal/stylegraphics/info.gif)
PROCEDURE
|
1. |
BRAKE PROBLEM CHECK |
(a) Check whether the slip indicator light was illuminated when VSC did not operate.
OK:
The slip indicator light was illuminated.
HINT:
When a DTC is stored, the slip indicator light is illuminated and VSC does not operate due to the fail-safe function.
(b) Check whether the vehicle speed was 15 km/h (9 mph) or less when VSC did not operate.
OK:
The vehicle speed was 15 km/h (9 mph) or less.
HINT:
VSC does not operate when the vehicle speed is 15 km/h (9 mph) or less.
(c) Check whether the vehicle was driven straight for a few seconds at 35 km/h (22 mph) or more.
OK:
The vehicle was not driven straight for a few seconds at 35 km/h (22 mph) or more.
HINT:
When the ignition switch is turned to ON, as steering sensor zero point calibration is not performed below 35 km/h (22 mph), VSC will not operate until the vehicle is driven straight for a few seconds at 35 km/h (22 mph) or more.
| OK |
|
END |
|
|
2. |
CHECK DTC |
(a) Check the DTCs (electronically controlled brake system) that are output.
Chassis > Brake Booster > Trouble Codes
Chassis > Brake/EPB > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output. |
A |
|
Electronically controlled brake system DTCs are output. |
B |
| B |
|
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
|
|
3. |
CHECK TIRES |
(a) Check that the tire of each wheel is the correct size.
Click here
OK:
The tire of each wheel is the correct size.
| NG |
|
REPLACE THE TIRE OF EACH WHEEL WITH THE CORRECT SIZE |
|
|
4. |
CHECK AIRBAG ECU ASSEMBLY INSTALLATION |
(a) Turn the ignition switch off.
(b) Check that the yaw rate and acceleration sensor (airbag ECU assembly) has been installed properly.
Click here
OK:
The yaw rate and acceleration sensor (airbag ECU assembly) is tightened to the specified torque.
The yaw rate and acceleration sensor (airbag ECU assembly) is not tilted.
| OK |
|
| NG |
|
|
|