Toyota Yaris: Front Brake / Inspection

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Brake / Brake (front) / Front Brake / Inspection

INSPECTION

PROCEDURE

1. INSPECT BRAKE CYLINDER AND PISTON

(a) Check the front disc brake cylinder bore and front disc brake piston for rust and scoring.

If necessary, replace the front disc brake cylinder assembly and front disc brake piston.

2. INSPECT PAD LINING THICKNESS

(a) Using a ruler, measure the front disc brake pad lining thickness.

Standard Thickness:

8.8 mm (0.346 in.)

Minimum Thickness:

1.0 mm (0.0394 in.)

If a front disc brake pad lining thickness is less than the minimum thickness, replace the front disc brake pads.

HINT:

Be sure to check the front disc thickness when replacing the front disc brake pads with new ones.

3. INSPECT FRONT DISC BRAKE ANTI-RATTLE SPRING

(a) Clean the front disc brake anti-rattle spring and check it for deformation and cracks.

If necessary, replace the front disc brake anti-rattle spring.

4. INSPECT DISC THICKNESS

(a) Using a micrometer, measure the front disc thickness.

Standard Thickness:

28.0 mm (1.10 in.)

Minimum Thickness:

25.0 mm (0.984 in.)

If the front disc thickness is less than the minimum thickness, replace the front disc.

*a	Micrometer

5. INSPECT DISC RUNOUT

(a) Inspect the front axle hub bearing looseness and front axle hub runout.

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(b) Hold the front disc, tighten the front disc with the 5 hub nuts.

Torque:

30 N·m {306 kgf·cm, 22 ft·lbf}

NOTICE:

Do not overtighten the hub nuts as the installation part of the nut is made of aluminum.

Maximum Disc Runout:

0.05 mm (0.00197 in.)

NOTICE:

Keep the magnet of the dial indicator away from the front axle hub sub-assembly and front speed sensor.

If the runout exceeds the maximum value, change the installation position of the front disc to minimize the runout. If the runout exceeds the maximum even when the installation position is changed, replace the front disc.

*a	Dial Indicator

(d) Remove the 5 hub nuts and front disc.

Removal

REMOVAL CAUTION / NOTICE / HINT NOTICE: To avoid degrading the precision of the assembly, do not loosen or remove the 2 bolts shown in the illustration...

Reassembly

REASSEMBLY PROCEDURE 1. TEMPORARILY TIGHTEN FRONT DISC BRAKE BLEEDER PLUG (a) Temporarily tighten the front disc brake bleeder plug to the front disc brake cylinder...

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: System Description

SYSTEM DESCRIPTION LOAD OPERATION OUTPUT (a) Load is turned on or off according to the operation signals and switch signals from each ECU. Components Semiconductor Power Integration ECU Power Distribution Box Assembly Operation Signal Communication Support *1: w/ Front Seat Heater *2: Built into power distribution box assembly Headlight ECU Assembly ○ - Not supported Fog Light Assembly ○ - Supported Rear Window Defogger / Mirror Heater - ○ Supported Taillight - ○ Supported Rear Fog Light - ○ Supported Back-up Light - ○ Not supported Outer Rear View Mirror Assembly - ○ Supported Panel Illumination - ○ Supported Seat Heater LH*1 High/Low - ○ Not supported Seat Heater RH*1 High/Low - ○ Not supported Passenger Seat Buckle Switch Delegated Input - ○ - Occupant Detection Sensor Delegated Input - ○ - Rear Seat RH Buckle Switch Delegated Input - ○ - Rear Seat CTR Buckle Switch Delegated Input - ○ - Rear Seat LH Buckle Switch Delegated Input - ○ - IGR Relay*2 - ○ Not supported SEMICONDUCTOR FUSE FUNCTION (a) When a malfunction current occurs during load operation, the current is shut off before the electrical lines emit smoke, and then load is turned off...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Installation

INSTALLATION PROCEDURE 1. INSTALL MASS AIR FLOW METER (a) Install the mass air flow meter to the air cleaner cap sub-assembly with the 2 screws. NOTICE: If the mass air flow meter has been struck or dropped, replace it. If reusing the mass air flow meter, be sure to inspect the O-ring...