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AUTO 112 FINAL EXAM (AUTOMOTIVE BRAKE SYSTEMS)
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---5May 20252024/2025A+
- AUTO 112 FINAL EXAM 
(AUTOMOTIVE BRAKE SYSTEMS) 
A defective vacuum brake booster will cause a_____ - CORRECT ANSWER -Hard Brake Pedal 
Two techs are discussing vacuum brake booster. Tech A says that when the brakes are in the applied 
positions, vacuum is present on the front side of the diaphragm. Tech B says that when the brake is 
applied with great force, some vehicles have a Brake Assist System (BAS) that opens a valve at the 
back of the booster to increase atmospheric pressure and ...
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