Camry Wagon L4-2.0L (3S-FE) (1990)
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Vacuum Brake Booster: Testing and Inspection
Air Tightness Check
AIR TIGHTNESS CHECK
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Start engine and stop after one or two minutes.
Fig. 3 Air Tightness Check
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Depress brake pedal several times slowly. If pedal drops the most on the first time, but gradually rises after the second or third time, booster is air
tight.
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Depress brake pedal with engine running, then while depressing brake pedal stop engine.
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If there is no change in pedal reserve travel after holding pedal for 30 seconds, the booster is air tight.
