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

Toyota Yaris XP210 (2020-2023) 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

A

INSPECT CAN COMMUNICATION SYSTEM

B

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.

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

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