ASE identifies brakes as an individual service area. The brakes service area involves these components: Hydraulic system: Components (such as the brake lines and master cylinder) that transfers power from the brake pedals to either disc or drum brakes. Mechanical Foundation System: Components (such as discs and pads or drums and shoes) that creates the friction required to stop the vehicle. Electronic system: Components that notify the driver of a failure in the brake system. In anti-lock brake (ABS) systems, electrical system components work to prevent tire skidding.

ASE A5 Brake Systems Practice Test

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24 Questions

1. This question has the word EXCEPT. For this question, look for the choice that could NOT cause the described situation. Read the entire question carefully before choosing your answer. A vehicle has a very erratic brake pulling concern while applying the brakes. All of the following items could cause this erratic pull EXCEPT:

Seized caliper piston on the other sideSteering gear problemFour-wheel alignmentExcessive tire pressure

2. A spongy brake pedal may be caused by:

ABS Diagnostic Trouble Code setAir in hydraulic systemFrozen caliper pistonDefective metering valve.

3. Technician A says the vacuum supply test involves inspecting the vacuum supply hose for kinks. Technician B says the test involves checking the level of vacuum supplied by the engine or vacuum pump. Who is right?

BothB onlyNeitherA only

4. A vehicle with 4-wheel disc brakes has a brake squeal. Technician A says a defective proportioning valve could be the cause. Technician B says disc brake squeal is often caused by movement of the disc brake pad during braking. Who is right?

BothA onlyB onlyNeither

5. With the brakes applied on a vehicle with power brakes, the pedal moves down slightly when the engine is started. Technician A says the cause could be a leaking power brake booster diaphragm. Technician B says the cause could be a stuck closed residual check valve in the hose from the intake manifold to the power brake booster. Who is right?

BothNeitherA onlyB only

6. Which of the following conditions can cause brake pedal fade?

Brake drum machined beyond its limitLeakage past the master cylinder cupsAir in the hydraulic systemSeized wheel cylinder piston

7. On a car with single piston floating caliper disc brakes, the disc brake pad between the caliper piston and the rotor is badly worn. The other brake pad is slightly worn. Technician A says excessive rotor run out could be the cause. Technician B says insufficient clearance between the pads and caliper slider could be the cause. Who is right?

NeitherA onlyB onlyBoth

8. On a car with a drum/disc system, the front brakes lock up on light pedal application. This problem could be caused by a bad:

Proportioning valveMetering valvePressure differential switchResidual check valve

9. A vehicle comes in with a complaint of excessive pedal travel before the brakes apply. Technician A says the master cylinder pushrod adjustment is incorrect. Technician B says the cause is a faulty residual pressure check valve admitting air. Who is right?

NeitherBothB onlyA only

10. A power assist brake booster push rod that is to short will cause which of the following?

Brake light is illuminatedExcessive brake dragBrake system to be inoperativeExcessive brake pedal travel

11. The rear brake linings are soaked with axle grease but still have a lot of lining left on them. Which is the correct way to service these brakes?

Replace the brake liningsWash in hot, soapy water and dry.Clean with approved cleaner and reuseRepair leak and replace brake linings

12. The front wheel bearings are being adjusted. Technician A says you torque the adjusting nut to a specified torque and back off the nut till it lines up with the hole and install the cotter pin. Technician B says backing off the castle nut will cause the bearing to overheat. Who is right?

B onlyA onlyNeitherBoth

13. A wheel speed sensor is being diagnosed using the OEM (original equipment manufacturer) diagnostic scan tool. Technician A says to verify wheel speed sensor operation, compare all four wheel speed sensor outputs to vehicle speed on the data list. Technician B says the wheel's direction of rotation can be verified by looking at the wheel direction on the scan tool data list. Who is right?

B onlyBothNeitherA only

14. On a bearing that has been shock loaded, the race (cup) of the bearing can be dented. What is this type of bearing failure called?

ArcingFlutingBrinellingSpalling

15. A wheel speed sensor is being diagnosed using the OEM (original equipment manufacturer) diagnostic scan tool. Technician A says to verify wheel speed sensor operation, compare all four wheel speed sensor outputs to vehicle speed on the data list. Technician B says the wheel's direction of rotation can be verified by looking at the wheel direction on the scan tool data list. Who is right?

A onlyB onlyBothNeither

16. A spongy brake pedal may be caused by:

Air in hydraulic systemABS Diagnostic Trouble Code setFrozen caliper pistonDefective metering valve.

17. A vehicle with 4-wheel disc brakes has a brake squeal. Technician A says a defective proportioning valve could be the cause. Technician B says disc brake squeal is often caused by movement of the disc brake pad during braking. Who is right?

B onlyA onlyNeitherBoth

18. The component in the Figure is involved what procedure?

Replacing the front strutReplacing sealed wheel bearingRepacking a front wheel bearingReplacing a ball joint

19. The front brake rotors and pads are being replaced on a vehicle equipped with a TCS (traction control system) and electronic stability control system (ESC). Technician A says the yaw rate and deceleration sensor should be recalibrated. Technician B says the new rotors should be indexed to the hub using a dial indicator for the least amount of runout. Who is right?

B onlyBothNeitherA only

20. Technician A says a defective wheel or axle bearing can make a growling or rumbling noise. Technician B says a defective wheel displays looseness or excessive play in the steering wheel especially while driving over rough road surfaces. Who is right?

A onlyNeitherB onlyBoth

21. A vehicle comes in with a complaint of excessive pedal travel before the brakes apply. Technician A says the master cylinder pushrod adjustment is incorrect. Technician B says the cause is a faulty residual pressure check valve admitting air. Who is right?

A onlyNeitherB onlyBoth

22. The front brake rotors and pads are being replaced on a vehicle equipped with a TCS (traction control system) and electronic stability control system (ESC). Technician A says the yaw rate and deceleration sensor should be recalibrated. Technician B says the new rotors should be indexed to the hub using a dial indicator for the least amount of runout. Who is right?

BothB onlyA onlyNeither

23. When performing a vacuum booster function test, you should begin by pumping the brake pedal several times _______________.

while driving the vehicle slowlywith the vacuum hoses removedwith the engine offwith the engine running

24. A vehicle with disc/drum brakes requires excessive brake pedal effort to stop. The brake pedal is firm when applied. While starting the engine with the brakes applied, the pedal does not go down slightly. Technician A says excessive brake pedal freeplay could be the cause. Technician B says air trapped in the hydraulic system could be the cause. Who is right?

A onlyNeitherBothB only