Exam 53: Antilock Brake, Traction Control, and Stability Control Systems

What does the brake pedal feel like when the ABS system is activated?

Technician A says integral ABS systems use a vacuum-type power brake booster. Technician B says nonintegral ABS systems use a hydraulic-type power brake booster. Who is correct?

Driving an ABS vehicle is being discussed. Technician A pumps the brake pedal during hard braking. Technician B applies steady pressure to the brake pedal. Who is correct?

Describe the normal brake pedal feel when the ABS is activated during hard braking.

Technician A says if the amber ABS warning light is on continuously, the ABS system is still operational but may not be operating at 100 percent efficiency. Technician B says ABS operation might be affected by improperly turning the drums and rotors. Who is correct?

An accumulator ______.

In a one-channel ABS system, only the ____________________ brakes on both sides of the vehicle are modulated at the same time to control skidding.

Technician A says silicone-based brake fluid should always be used on ABS brake systems. Technician B says DOT 3 is the recommended fluid for most ABS systems. Who is correct?

ABS pressure modulation works to prevent wheel locking.

Describe ABS brake pressure modulation.

The ABS pump motor switch turns the pump on and off to maintain 200 to 261 psi (1,379 to 1,800 kPa) of hydraulic pressure in the accumulator.