Toyota Yaris: Brake Booster / On-vehicle Inspection

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Brake / Brake System (other) / Brake Booster / On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT BRAKE BOOSTER ASSEMBLY

(a) Airtightness check

(1) Start the engine and stop it after 1 or 2 minutes. Slowly depress the brake pedal several times.

HINT:

If the brake pedal can be depressed nearly to the floor the first time, but on the 2nd and 3rd time cannot be depressed as far, the brake booster assembly is airtight.

*a

Correct

*b

Incorrect

*c

1st

*d

2nd

*e

3rd

(2) Depress the brake pedal with the engine running, and stop the engine with the brake pedal depressed.

HINT:

If there is no change in the brake pedal reserve distance while holding the brake pedal depressed for 30 seconds, the brake booster assembly is airtight.

(b) Operation check

(1) Depress the brake pedal several times with the ignition switch off and check that there is no change in the brake pedal reserve distance when the brake pedal is depressed.

(2) Depress and hold the brake pedal, then start the engine.

HINT:

If the brake pedal goes down slightly, operation is normal.

    Brake Booster

    ..

    Disassembly

    DISASSEMBLY PROCEDURE 1. REMOVE BRAKE VACUUM CHECK VALVE ASSEMBLY (a) Remove the brake vacuum check valve assembly from the brake booster assembly. (b) Remove the check valve grommet from the brake booster assembly...

    Other information:

    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Removal


    REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the LH side and RH side. The following procedure is for the LH side. PROCEDURE 1. REMOVE FRONT DOOR SCUFF PLATE Click here 2. REMOVE COWL SIDE TRIM BOARD Click here 3. REMOVE ROOF SIDE RAIL WEATHERSTRIP (a) Remove the 3 clips...

    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: System Description


    SYSTEM DESCRIPTION POWER WINDOW CONTROL SYSTEM DESCRIPTION (a) The power window control system controls the power window operation using the power window regulator motor assemblies. The main controls of this system are the multiplex network master switch assembly (mounted on the driver door) and power window regulator switch assembly (mounted on the front passenger door) ...

    Categories

    Key Suspend Function

    If a key is left in the vehicle, the functions of the key left in the vehicle are temporarily suspended to prevent theft of the vehicle.

    To restore the functions, press the unlock button on the functions-suspended key in the vehicle.

    read more

     
    Copyright © 2025 www.toyaris4.com