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

What is an electronic stability control system [ESC]?

The ____________________ pump is used to provide pressurized hydraulic fluid for the ABS.

Technician A says if the amber brake lamp is on continuously, an ABS code is stored in the ABS control module. Technician B says on some vehicles, the amber ABS warning light will flash out digital trouble codes. Who is correct?

Which of the following is not a location for the toothed ring [toner ring]?

A wheel speed sensor generates a DC voltage as a toothed ring passes the sensor's coil.

Technician A says in one-channel systems, the rear brakes on both sides of the vehicle are modulated at the same time to control skidding. Technician B says most single-channel systems have a wheel speed sensor at each rear wheel. Who is correct?

List three ways the PCM reduces torque to the drive wheels when the ATC system is in traction control mode.

What is the difference between an accumulator and an ABS fluid accumulator?

An accumulator is normally charged with ______.

Technician A says when the ignition switch is turned to the start position, both the red and amber brake warning lights should turn on. Technician B says after the engine starts, the amber ABS warning light should turn off after three to five seconds if the system passes its self-test. Who is correct?

What is the basic difference between a General Motors ABS-VI and other typical systems?

Technician A says a loss of hydraulic fluid disables the antilock brake system. Technician B says a loss of power booster pressure disables the antilock brake system. Who is correct?

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?

Explain the difference between an integrated and a nonintegrated antilock braking system.

Technician A says three-channel ABS systems have individual hydraulic circuits to each of the two front wheels, and a single circuit to the two rear wheels. Technician B says a three-channel ABS system has four sets of solenoids in the hydraulic unit. Who is correct?

Most of the service done to the brakes of an antilock brake system is identical to that in a conventional brake system.

An ATC system controls positive wheel spin by modulating hydraulic pressure applied to the brakes on the wheel that is spinning to slow down the wheel.

Electronic stability control [ESC] systems are being discussed. Technician A says the brake at the inside rear wheel is applied when the system detects an understeer condition. Technician B says ESC can extend a car's physical limits and can increase traction. Who is correct?

The yaw rate sensor and lateral accelerometer share the same housing and are located _____.

An integrated system is often called a(n) ____________________ system.