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

Two solenoid valves are used to control each hydraulic circuit or channel.

Technician A says some antilock brake systems use a lateral acceleration sensor in addition to the wheel speed sensors. Technician B says traction control systems apply one wheel brake to control oversteer while turning. Who is correct?

The function of the pressure switch in the hydraulic control unit is to ______.

When activated, the dump valve sends hydraulic pressure to the ______.

G-force is a measurement of a vehicle's ____________________.

ATC systems are being discussed. Technician A says in order to use the brakes to control wheel spin, the ABS must have a pump to develop hydraulic pressure and an accumulator to store reserve pressure. Technician B says the pulse rings and wheel-speed sensors for ATC systems are located inside the transmission and are different from ABS wheel speed sensors. Who is correct?

Modern antilock brake systems provide electronic/hydraulic ____________________ of the brakes for straight-line stopping during panic conditions.

The ABS ____________________ module monitors system operation and commands antilock functions when needed.

Antilock brake systems are highly effective in stopping a vehicle driving over loose snow.

All vehicles have a(n) ____________________-colored warning lamp to indicate a problem in the vehicle's antilock brake system.

Technician A says understeer is a condition where the vehicle is slow to respond to steering changes. Technician B says oversteer occurs when the rear wheels try to swing around or fishtail. Who is correct?

DOT ____________________ brake fluid is recommended for most antilock systems.

Automatic stability control systems help correct _____ by applying the inner or outer wheel brakes.

Nonintegral ABS systems use a conventional vacuum-assist booster and master cylinder.

When the ABS is activated when a wheel begins to lock, the brake pedal should ______.

Antilock brake systems can modulate the pressure to the brakes as often as _____ times per second.

Technician A says information from the wheel speed sensors is available to other control modules on the CAN network. Technician B says wheel speed sensors are AC generator-type sensors. Who is correct?

Technician A says the wheel speed sensor air gap cannot be adjusted. Technician B says wheel speed sensors can be tested with a lab scope. Who is correct?

The majority of antilock brake systems are of the integrated design.

An ABS speed sensor may be located on an axle's differential gear housing.