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

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

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?

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?

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

With ABS, the brake pedal feel during hard (panic stop)braking is similar to that of a conventional power brake system.

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

Systems that combine ABS and power assist functions are called a(n)____________________ system

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

What is the name of the gas-filled pressure chamber that is part of the antilock brake system's pump and motor assembly?

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

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?

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

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

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

Before removing the master cylinder on an ABS system with a high-pressure accumulator, the accumulator must be discharged by ______.

Describe ABS brake pressure modulation.

All vehicles have a(n)____________________colored warning lamp to indicate a problem in the vehicle's conventional brake system.

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?

An accumulator unit is typically found on vehicles with _____.