Toyota Yaris: Vehicle Stability Control System / ABS Operates Before Necessary When Braking
DESCRIPTION
Troubleshooting for when ABS operates too soon due to a noisy signal from the speed sensor, a difference in output, etc.
CAUTION / NOTICE / HINT
NOTICE:
-
After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
Click here
-
After replacing or removing and installing a speed sensor rotor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
Click here
PROCEDURE
| 1. | PERFORM DEALER MODE (SIGNAL CHECK) INSPECTION (SPEED SENSOR CHECK) |
(a) Using the GTS, perform a Dealer Mode (Signal Check) inspection sensor check and check that speed sensor Dealer Mode (Signal Check) inspection items change from incomplete to complete.
Chassis > Brake > Utility| Tester Display |
|---|
| Signal Check |
OK:
Speed sensor Dealer Mode (Signal Check) inspection items change from incomplete to complete.
| Result | Proceed to |
|---|---|
| OK (for Front) | A |
| OK (for Rear) | B |
| NG | C |
HINT:
The rear speed sensor and rear speed sensor rotor are incorporated into the rear axle hub and bearing assembly.
If the rear speed sensor and rear speed sensor rotor need to be replaced, replace the rear axle hub and bearing assembly.
| A |
 | CLEAN SPEED SENSOR AND SPEED SENSOR ROTOR |
| B |
 | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY |
| C |
 | INSPECT AND REPAIR MALFUNCTIONING SPEED SENSOR CIRCUIT |
Excessive Brake Pedal Travel (No Fluid Leaks and No Air in System)
CAUTION / NOTICE / HINT NOTICE: After replacing the skid control ECU (brake actuator assembly), perform "Calibration". Click here
PROCEDURE 1. PRE-INSPECTION (a) Brake pedal inspection (1) Perform a visual inspection and operate the brake pedal to check for any malfunctions...
VSC does not Operate or VSC does not Operate Correctly
DESCRIPTION When TRC or VSC is operating, the skid control ECU (brake actuator assembly) blinks the slip indicator light to inform the driver that slippage occurred...
Other information:
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Back Door Entry Lock Function does not Operate
DESCRIPTION If the entry lock function does not operate for the back door only, but the entry unlock function operates, the request code is being transmitted properly from the back door. In this case, there may be a problem related to the lock switch (connection between the back door opener switch assembly and certification ECU (smart key ECU assembly))...
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Engine/Power Switch Signal Compare Failure (B227862)
DESCRIPTION This DTC is stored when the SSW1 contact signal, SSW2 contact signal and SSW3 contact signal, which are detected when the engine switch is operated, do not match. DTC No. Detection Item DTC Detection Condition Trouble Area Note B227862 Engine/Power Switch Signal Compare Failure When the engine switch is operated, the SSW1 contact signal, SSW2 contact signal and SSW3 contact signal do not match...
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Break-In Period
No special break-in is necessary, but a few precautions in the first 600 miles (1,000 km) may add to the performance, economy, and life of the vehicle.
Do not race the engine. Do not maintain one constant speed, either slow or fast, for a long period of time. Do not drive constantly at full-throttle or high engine rpm for extended periods of time. Avoid unnecessary hard stops. Avoid full-throttle starts.