Toyota Yaris: Vehicle Stability Control System / ABS Warning Light Remains ON

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / ABS Warning Light Remains ON

DESCRIPTION

This procedure is for troubleshooting when the ABS warning light remains on but no DTCs are output.

The skid control ECU (brake actuator assembly) controls the ABS warning light in the combination meter assembly via CAN communication.

CAUTION / NOTICE / HINT

NOTICE:

After replacing the skid control ECU (brake actuator assembly), perform "Calibration".
Click here
Before performing this procedure, depress the brake pedal and confirm that the stop lights illuminate.

PROCEDURE

1.	CHECK GTS OUTPUT (CAN COMMUNICATION SYSTEM)

(a) Operate the GTS, and check for DTCs related to the CAN communication system.

Click here

Result	Proceed to
Any CAN communication system relating DTCs are output	A
None of the above conditions are met	B

INSPECT CAN COMMUNICATION SYSTEM

2.	INSPECT COMBINATION METER ASSEMBLY

(a) Perform the Active Test of the combination meter assembly using the GTS.

Body Electrical > Combination Meter > Active Test

Tester Display
ABS Warning

(b) Check the combination meter assembly.

OK:

The ABS warning light turns on or off in accordance with the GTS operation.

REPLACE BRAKE ACTUATOR ASSEMBLY

INSPECT METER / GAUGE SYSTEM

Control Module Communication Bus "B" Off Bus Off (U007488,U010087,U010187,U012587,U012687,U015187)

DESCRIPTION The skid control ECU (brake actuator assembly) receives signals from the ECM, steering sensor and airbag sensor assembly via CAN communication...

ABS Warning Light does not Come ON

DESCRIPTION The skid control ECU (brake actuator assembly) controls the ABS warning light in the combination meter assembly via CAN communication. CAUTION / NOTICE / HINT NOTICE: After replacing the skid control ECU (brake actuator assembly), perform "Calibration"...

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Backup Boost Converter Circuit Board(Thermistor) Signal Compare Failure (P30DF62,P30EF4B,P323A00,P323A16,P323AA2,P323B29,P323B38)

DESCRIPTION Refer to DTC P323A19. Click here DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory Note P30DF62 Backup Boost Converter Circuit Board(Thermistor) Signal Compare Failure The following conditions is met for 1 second or more (1 trip detection logic): Difference in temperature between thermistor 1 and thermistor 2 of the engine stop and start ECU is 40°C (72°F) or higher...

Toyota Yaris XP210 (2020-2026) Owner's Manual: Supplemental Restraint System (SRS) Precautions

The front and side supplemental restraint systems (SRS) include different types of air bags. Please verify the different types of air bags which are equipped on your vehicle by locating the “SRS AIRBAG” location indicators. These indicators are visible in the area where the air bags are installed...