ASE Practice Test (A5: Brakes)

Question 1

Which of the following is caused by a power assist brake booster push rod that is too short?

Accepted Answer

Excessive brake pedal travel

Answer

Brake light is illuminated

Answer

Excessive brake drag

Answer

Brake system to be inoperative

Question 2

Which of the following indicates a spongy brake pedal on a car with 4-wheel disc brakes and a longer than normal travel?

Accepted Answer

Air in the hydraulic system

Answer

Caliper piston seized

Answer

Parking brake out of adjustment

Answer

A faulty power booster

Question 3

A vacuum brake booster is installed on a vehicle. It doesn't have power assist until the engine has been running for a minute, after which it functions normally. What is the most probable cause?

Accepted Answer

Defective check valve

Answer

Adjusted brake pedal push rod is too short

Answer

Front brake disc is worn

Answer

Engine requires a tune-up to produce a higher vacuum at idle speed

Question 4

During braking, the brake pedal on a vehicle with power-assisted disc/drum brakes gently glides to the floor. Which of these possibly be the source of the problem?

Accepted Answer

An internal master cylinder leak

Answer

A leaking power brake booster diaphragm

Answer

A leaking brake booster check valve

Answer

An internal leak in the combination valve

Question 5

What may be the cause of a spongy brake pedal?

Accepted Answer

Air in hydraulic system

Answer

Frozen caliper piston

Answer

ABS Diagnostic Trouble Code set

Answer

Defective metering valve.

Question 6

The ABS (antilock brake system) amber light does not go off after the engine is started. Technician X says a parking brake not fully released could be the cause. Technician Y says when this happens the brakes will operate like a normal non-ABS brake system. Who is right?

Accepted Answer

Y only

Answer

X only

Answer

Both X and Y

Answer

Neither X nor Y

Question 7

Even though all of the adjustments have been done according to the specifications, the brake pedal begins to feel spongy and low. What might be the source of the issue?

Accepted Answer

Weak hydraulic hose

Answer

Binding pedal linkage

Answer

Dented brake line

Answer

Plugged compensating port

Question 8

When light pedal pressure is applied to a vehicle with disc/drum brakes, the front brakes grab quickly. It's possible that this is the result of a failed:

Accepted Answer

metering valve

Answer

residual check valve

Answer

proportioning valve

Answer

pressure differential valve

Question 9

Which of the conditions listed below can cause brake pedal fade?

Accepted Answer

Brake drum machined beyond its limit

Answer

Air in the hydraulic system

Answer

Seized wheel cylinder piston

Answer

Leakage past the master cylinder cups

Question 10

The axle grease soaked the rear brake linings, and there's still a lot of lining left on them. What is the proper procedure for servicing these brakes?

Accepted Answer

Repair leak and replace brake linings

Answer

Wash in hot, soapy water and dry.

Answer

Clean with approved cleaner and reuse

Answer

Replace the brake linings