toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Vacuum Brake Booster|Service and Repair > < Air Tightness Check
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Vacuum Brake Booster: Testing and Inspection
Operating Check

OPERATIONAL TEST OF BRAKE BOOSTER

NOTE: If there is leakage or lack of vacuum, repair before testing. If available, use a brake booster tester to check the booster operating
condition.

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Depress brake pedal several times with engine stopped, and ensure that pedal reserve distance does not change.

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Depress brake pedal and start engine. If pedal drops slightly, operation is normal.

Vacuum Brake Booster|Service and Repair > < Air Tightness Check