Toyota Yaris: Vehicle Stability Control System / Problem Symptoms Table

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

If there are no DTCs output and the problem still occurs, check the suspected areas for each problem symptom in the order given in the following table and proceed to the relevant troubleshooting page.

NOTICE:

When replacing the skid control ECU (brake actuator assembly), sensors, etc., turn the ignition switch off.

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Vehicle Stability Control System

Symptom

Suspected Area

Link

ABS warning light abnormal (Remains on)

Refer to the procedure for "ABS Warning Light Remains ON"

ABS warning light abnormal (Does not come on)

Refer to the procedure for "ABS Warning Light does not Come ON"

Brake system warning light abnormal (Remains on)

Refer to the procedure for "Brake Warning Light Remains ON"

Brake system warning light abnormal (Does not come on)

Refer to the procedure for "Brake Warning Light does not Come ON"

Slip indicator light abnormal (Remains on)

Refer to the procedure for "Slip Indicator Light Remains ON"

Slip indicator light abnormal (Does not come on)

Refer to the procedure for "Slip Indicator Light does not Come ON"

TRC does not operate

Refer to the procedure for "TRC does not Operate"

Excessive brake pedal travel (No fluid leaks and no air in system)

Refer to the procedure for "Excessive Brake Pedal Travel (No Fluid Leaks and No Air in System)"

ABS operates before necessary when braking

Refer to the procedure for "ABS Operates Before Necessary When Braking"

VSC does not operate or VSC does not operate correctly

Refer to the procedure for "VSC does not Operate or VSC does not Operate Correctly"

Brake actuator operation sound is loud during initial check

Refer to the procedure for "Brake Actuator Operation Sound is Loud during Initial Check"

VSC OFF switch (Combination switch assembly) abnormal

Refer to the procedure for "VSC OFF Switch Circuit"

    Test Mode Procedure

    TEST MODE PROCEDURE ACTIVATE DEALER MODE (SIGNAL CHECK) HINT: Signals related to the vehicle stability control system can be inspected by performing a Dealer Mode (Signal Check) inspection...

    Diagnosis System

    DIAGNOSIS SYSTEM DESCRIPTION When troubleshooting a vehicle with the diagnosis system, the only difference from the usual troubleshooting procedure is connecting the GTS to the vehicle and reading various data output from the vehicle's skid control ECU (brake actuator assembly)...

    Other information:

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Data List / Active Test


    DATA LIST / ACTIVE TEST DATA LIST CAUTION: Never measure the resistance of the SRS parts because current from the tester may cause the SRS parts to deploy. NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not...

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: On-vehicle Inspection


    ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT NO. 1 TURBO PRESSURE SENSOR (a) Check the terminal voltage. (1) Disconnect the No. 1 turbo pressure sensor connector. (2) Turn the ignition switch to ON. (3) Measure the voltage according to the value(s) in the table below...

    Categories

    Refueling

    Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.

    To open the fuel-filler lid, pull the remote fuel-filler lid release.

    Toyota Yaris. Refueling

    To remove the fuel-filler cap, turn it counterclockwise. Attach the removed cap to the inner side of the fuel-filler lid.

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