Toyota Yaris: Front Brake / Inspection

Toyota Yaris XP210 (2020-2025) 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.

Click here

(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 (2020-2025) Reapir and Service Manual: Components

COMPONENTS ILLUSTRATION *1 SYMBOL EMBLEM *2 NO. 4 BACK DOOR NAME PLATE *3 NO. 2 BACK DOOR NAME PLATE - - ● Non-reusable part - - ILLUSTRATION *1 NO. 1 BACK DOOR NAME PLATE - - ● Non-reusable part - - ILLUSTRATION *A for LH side *B for RH side *1 NO...

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Lost Communication with Steering Angle Sensor Module Missing Message (U012687,U010087,U012987,U014087,U023A87)

DESCRIPTION The power steering ECU assembly receives signals from the steering sensor, skid control ECU (brake actuator assembly), forward recognition camera, ECM and clearance warning ECU assembly via CAN communication. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note U010087 Lost Communication With ECM/PCM "A" Missing Message Lost communication with ECM CAN communication system ECM EPS warning light: Does not come on After normal confirmation - U012687 Lost Communication with Steering Angle Sensor Module Missing Message Lost communication with steering sensor CAN communication system Steering sensor EPS warning light: Does not come on After normal confirmation - U012987 Lost Communication with Brake System Control Module Missing Message Lost communication with skid control ECU (brake booster with master cylinder assembly) CAN communication system Skid control ECU (Brake booster with master cylinder assembly)(for TMC Made HV Model) Skid control ECU (Brake actuator assembly)(for TMMF Made HV Model) EPS warning light: Does not come on After normal confirmation - U014087 Lost Communication with Body Control Module Missing Message Lost communication with main body ECU (multiplex network body ECU) CAN communication system Main body ECU (multiplex network body ECU) EPS warning light: Does not come on After normal confirmation - U023A87 Lost Communication with Image Processing Module "A" Missing Message Lost communication with forward recognition camera CAN communication system Forward recognition camera EPS warning light: Does not come on After normal confirmation w/ Toyota Safety Sense PROCEDURE 1...