Toyota Sienna Service Manual: On-vehicle inspection

Toyota Sienna Service Manual / Brake control / Brake booster / On-vehicle inspection

1. INSPECT BRAKE BOOSTER

INSPECT BRAKE BOOSTER

(a) Air tightness check.

(1) Start the engine and stop it after 1 or 2 minutes.

Depress the brake pedal several times slowly.

HINT: If the pedal goes down farthest at the 1st time, and gradually rises at the 2nd or 3rd time, the booster is airtight.

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

HINT: If there is no change in the pedal reserve distance after holding the pedal for 30 seconds, the booster is airtight.

(b) Operating check.

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

(2) Depress the brake pedal and start the engine.

HINT: If the pedal goes down slightly, the operation is normal.

Removal

NOTICE: Do not adjust the brake booster push rod. Do not change the combination of the diameter converting unit and brake. 1. REMOVE FRONT WHEEL 2. DRAIN BRAKE FLUID NOTICE: Wash the bra ...

Other materials:

Oxygen (A/F) Sensor Signal Stuck
DTC P2195 Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1) DTC P2196 Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1 Sensor 1) DTC P2197 Oxygen (A/F) Sensor Signal Stuck Lean (Bank 2 Sensor 1) DTC P2198 Oxygen (A/F) Sensor Signal Stuck Rich (Bank 2 Sensor 1) HINT: Although the ...

Front Occupant Classification Sensor LH Circuit Malfunction
DTC B1780 Front Occupant Classification Sensor LH Circuit Malfunction DESCRIPTION The front occupant classification sensor LH circuit consists of the occupant classification ECU and the front occupant classification sensor LH. DTC B1780 is recorded when a malfunction is detected in the fron ...

Back-up Power Source Circuit
DESCRIPTION This is the back-up power source for the A/C amplifier. Power is supplied even when the ignition switch is off and is used for diagnostic trouble code memory, etc. WIRING DIAGRAM INSPECTION PROCEDURE 1 INSPECT FUSE (ECU-B) (a) Remove the ECU-B fuse from the engine room juncti ...