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

Technician A says ABS wheel speed sensors are Hall-effect-type sensors. Technician B says ABS sensors are PM generators. Who is correct?

Describe the proper steps to follow when testing and diagnosing an antilock brake system.

Technician A says the solenoid valves inside the modulator unit are used to decrease brake pressure. Technician B says the solenoids are used to increase pressure. Who is correct?

Which of the following ABS components is NOT part of the hydraulic control unit?

The signal produced by wheel speed sensors can be affected by radio frequency interference (RFI).

Nonintegrated ABS systems do not use an electric pump or accumulator.

Technician A says ABS systems provide superior directional stability when the brakes are applied while turning a corner. Technician B says ABS systems provide superior braking when driving on loose snow. Who is correct?

A tire on the verge of slipping produces less friction with respect to the road than one that is locked and skidding.

If the brake fluid level is below minimum, the _____ warning lamp will turn on.

In addition to wheel speed sensors, ESC systems also require a _____.

Technician A says a malfunction of the ABS causes the control module to shut off or inhibit the system. Technician B says a loss of hydraulic fluid or power booster pressure disables the antilock brake system. Who is correct?

What is a lateral acceleration sensor?

Technician A says an integral-type ABS system uses accumulator pressure to provide power brake assist. Technician B says the integral ABS system uses accumulator pressure [boost pressure] to operate the rear brakes. Who is correct?

ABS solenoid valves are electrically operated by signals from the control module.

Technician A says the steering ability of the vehicle is reduced if the front wheels are locked. Technician B says the stability of the vehicle is reduced if the rear wheels are locked. Who is correct?

The amber ABS brake warning light is illuminated with the engine running. The most likely cause of this problem is _____.

The pump on a nonintegrated-type ABS system is continuously on during an ABS stop and remains on for about five seconds after the stop is complete.

Describe the common method to depressurize an antilock brake system.

In an integral ABS system, the antilock hydraulic control valve assembly is located on the ______.

An antilock brake system's electric pump and motor assembly is often called the ____________________ pump.