Brake booster system is working?

Tiny
GHATMAIL
  • MEMBER
  • 1993 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • MANUAL
  • 109,000 MILES
How can I control my car's brake booster system is working correctly? Thank you so much H. Ebrahimi
Friday, January 28th, 2011 AT 12:44 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
If you wish to test the brake booster here are simple steps.

1. Turn engine OFF.
2. Pump the brake pedal a few times until it is hard.
3. Depress the brake pedal and hold.
4. Start engine.

If brake pedal softens and goes down when engine is started, the booster is working correctly.
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Monday, March 29th, 2021 AT 11:20 AM

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