Michigan State Brakes Certification Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Michigan State Brakes Certification Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Ace your brakes certification with confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

When does the pump motor activate in an anti-lock brake system with traction assist?

While the vehicle is idling
When brake pedal pulsates
When the vehicle accelerates
Once the engine is turned off

The correct answer is: When brake pedal pulsates

In an anti-lock brake system (ABS) equipped with traction assist, the pump motor activates to ensure that hydraulic pressure is maintained in the brake system during specific conditions, particularly when the brake pedal pulsates. This pulsation occurs when the ABS is actively preventing wheel lock-up during heavy braking situations. The system monitors wheel speed and, when it detects that a wheel is about to lose traction and lock up, it modulates the brake pressure. To achieve this modulation, the pump motor is engaged to rebuild brake pressure as needed, allowing for continued control and effective stopping power without losing traction. The activation of the pump motor is directly tied to the hydraulic control necessary to maintain safety and functionality during braking events, making the response to brake pedal pulsation the key factor for its operation.