Toyota Yaris: 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. 0HINT: 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. |
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(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. |
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| (2) Depress and hold the brake pedal, then start the engine. HINT: If the brake pedal goes down slightly, operation is normal. |
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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 (2020-2026) Reapir and Service Manual: Turbocharger/Supercharger "A" Overboost Condition (P023400)
DESCRIPTION Refer to DTC P003312. Click here DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note P023400 Turbocharger/Supercharger "A" Overboost Condition Boost pressure exceeds the threshold value (calculated from turbocharger speed upper limit value)...
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Restarting after a Short Period of Time from an Idling Stop
DESCRIPTION Perform this procedure if the engine restarts after an abnormally short period of time after being stopped by the stop and start system. Regarding explanations of the features of stop and start system control: Click here PROCEDURE 1...
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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.
