Exam 106: Abs Components and Operation

The maximum traction between a tire and the road occurs when the tire is ________.

Which antilock component creates current frequencies that change with wheel rotational speed?

Technician A says that the ABS system may not result in shorter stopping distance compared to brakes without ABS. Technician B says that a pulsating brake pedal during normal braking is a characteristic feature of most ABS-equipped vehicles. Which technician is correct?

The ABS computer uses the ________ signal from a wheel speed sensor.

What type of antilock brake system is illustrated?

Which of these is a 3 channel antilock brake system?

Two technicians are discussing ABS wheel speed sensors. Technician A says that some ABS systems use a sensor located in the rear-axle pinion gear area. Technician B says that all ABS systems use a wheel speed sensor at each wheel. Which technician is correct?

Which of the following components is common to all vehicles equipped with ABS?

Technician A says an ABS antilock system decreases pressure to the hydraulic brake circuits on wheels with excessive wheel slippage during deceleration. Technician B says a traction control system increases pressure to the hydraulic brake circuit on wheels with excessive wheel slippage during acceleration. Which technician is correct?

Technician A says that ABS-equipped vehicles can stop quickly and without skidding on all road surfaces even if covered with ice. Technician B says that steering is possible during an ABS stop. Which technician is correct?

Magnetic wheel speed sensors are being discussed. Technician A says that the wheel speed sensors are magnetic. Technician B says that the toothed sensor ring is magnetic. Which technician is correct?

Which type of antilock braking system (ABS) requires the use of four wheel speed sensors?

Technician A says that some wheel speed sensors are enclosed in a wheel bearing assembly. Technician B says that some wheel speed sensors are exposed to possible damage from road debris. Which technician is correct?

Before servicing the brakes in a typical integral ABS, the technician should pump the brake pedal ________.

The faster a wheel rotates, the higher the frequency produced by a wheel speed sensor.

The standard ABS control strategy uses a three step cycle. These are ________.

Technician A says an antilock brake system will always produce the shortest possible stops. Technician B says when braking on loose gravel or dirt, a system that can lock the wheels produces shorter stops than an antilock system. Which technician is correct?

A customer wanted the ABS checked because of tire chirp noise during hard braking. Technician A says that the speed sensors may be defective. Technician B says that tire chirp is normal during an ABS stop on dry pavement. Which technician is correct?

Which of the following is NOT a function of an antilock brake system (ABS)?

Technician A says that most ABS units are non-integral.. Technician B says that the ABS is disabled (does not function) below about 5 mph (8 km/h). Which technician is correct?