While road testing a car equipped with an antilock brake system, Technician A says during heavy braking, several pulses may be felt through the brake pedal. Technician B says a spongy pedal during normal braking is acceptable. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because it is normal to feel pulses through the brake pedal during heavy braking with an antilock brake system (ABS). This is due to the ABS modulating the brake pressure to prevent wheel lockup. Technician B is incorrect because a spongy pedal during normal braking indicates a problem, such as air in the brake lines, and is not acceptable.

While Road Testing a Car Equipped with an Antilock Brake