ASE A5 Brakes Practice Test

Front

A vehicle with a vacuum brake booster has a hard pedal with little stopping power. Technician A says a kink in the check valve's hose will result in this condition. Technician B says a vacuum booster needs at least 12 Hg of vacuum to operate properly. Who is correct?

Back

Technician A only

Front

A vehicle has a low spongy brake pedal. Which of these is LEAST likely to result in this condition? Loose wheel bearings, Contaminated Brake Fluid, Worn Brake pads, Air in the hydraulic system.

Back

Worn Brake pads.

Front

Technician A says passive permanent magnet ABS wheel speed sensors produce an A/C voltage signal. Technician B says input from wheel speed sensors are used for anti-lock brake, electronic traction control, and electronic stability control systems. Who is correct?

Back

Both Technician A and B

Front

The brakes of a four wheel disc brake system are self-applying and locking up after only a few miles of travel. Which of the following is MOST likely the cause of this condition? A blocked master cylinder replenishing port. A blocked master cylinder vent port. Worn master cylinder cup seals. Low intake manifold vacuum.

Back

A blocked master cylinder vent port.

Front

A vehicle suffers from uneven pad wear. Technician A says to check for sticking slide pins. Technician B says this could be caused by a sticking caliper piston. Who is correct?

Back

Both Technician A and B

Front

A vehicle's right front wheel has a growl that increases with vehicle speed. The MOST likely cause is: Excessive rotor lateral run-out., Warped rear brake drums., Worn CV-joint., Worn wheel bearing.

Back

Worn wheel bearing.

Front

Two technicians are discussing master cylinder residual check valves. Technician A says the check valve is used on four wheel disc brake systems. Technician B says the valve maintains pressure when the brakes are released. Who is correct?

Back

Technician B only

Front

The brake pad wear indicator light is illuminated on the instrument panel. Technician A says this is because the brake pads have become contaminated. Technician B says this is the pad wear sensor contacting the brake rotor. Who is correct?

Back

Technician B only

Front

A vehicle with ABS anti-lock brakes has an audible clicking noise when it is first started. The noise goes away after a few seconds. Technician A says this is one of the hydraulic valves in the hydraulic valve assembly sticking. Technician B says this is a normal condition. Who is correct?

Back

Technician B only

Front

The rear wheels of a vehicle are locking up only when the brakes are applied. This is caused by a faulty:

Back

Proportioning valve.