Toyota Yaris: Vehicle Stability Control System / ABS Warning Light does not Come ON

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / 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".

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PROCEDURE

1.	CHECK GTS OUTPUT (CAN COMMUNICATION SYSTEM)

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

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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

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...

Brake Warning Light Remains ON

DESCRIPTION This procedure is for troubleshooting when the brake system warning light remains on but no DTCs are output. The skid control ECU (brake actuator assembly) controls the brake system warning light in the combination meter assembly via CAN communication...

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DESCRIPTION The airbag sensor assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition. The skid control ECU (brake actuator assembly) receives signals from the yaw rate and acceleration sensor (airbag sensor assembly) via CAN communication...