Download ASE A5 Brakes Automotive Certification Test 2025/2026 With Questions and Answers/ Graded A and more Exams Automatic Controls in PDF only on Docsity!
ASE A5 Brakes Automotive Certification Test
2025/2026 With Questions and Answers/ Graded A+
The brakes are being bled on an older vehicle equipped with a quick take up valve in the master cylinder. Technician A says the quick take up valve must be depressed. Technician B says the brakes on this vehicle cannot be bled. Who is right? a. A only b. B only c. Both A and B d. Neither A nor B Both technicians are wrong. The brakes on quick take up systems use the same bleeding procedure as those without this valve. A spongy brake pedal may be caused by: a. ABS Diagnostic Trouble Code set b. Frozen caliper piston c. Defective metering valve. d. Air in hydraulic system Air causes a gap in the hydraulic fluid flow because the fluid has to compress the
air before it can apply the piston. This delay causes the spongy feel. The other choices do not affect this concern. 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: a. Excessive tire pressure b. Four-wheel alignment c. Seized caliper piston on the other side d. Steering gear problem Excessive tire pressure is the exception because this fault will cause tire wear but not a pull. Low or uneven tire pressure can cause a pull. A power assist brake booster push rod that is to short will cause which of the following? a. Excessive brake drag b. Brake system to be inoperative c. Excessive brake pedal travel d. Brake light is illuminated
fade is loss of stopping power that occurs when excessive heat reduces friction between brake shoe linings and drum. There are four types of brake fade. Mechanical fade occurs when the brake drum gets so hot it expands away from the brake linings. If the brake drum is machined beyond its limit the contact surface is further from the brake shoes and they move outward to maintain contact with the drum, causing the brake pedal to drop toward the floor as additional brake fluid moves into the hydraulic system. The other 3 choices would not cause brake fade. 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? a. Replace the brake linings b. Wash in hot, soapy water and dry. c. Clean with approved cleaner and reuse d. Repair leak and replace brake linings The leak must be repaired before the linings are replaced. 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: a. Residual check valve b. Proportioning valve c. Pressure differential switch d. Metering valve
The metering valve controls the pressure to the front disc brakes on a combination system and if defective can allow too much pressure causing a lock-up. The other choices will not do this. 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. All of these would cause a low brake pedal, EXCEPT: a. Brake adjustment b. Loose wheel bearing c. Low brake fluid d. Seized caliper piston A seized caliper piston could cause the pedal to be high with reduced braking power. A spongy brake pedal on a vehicle with 4 - wheel disc brakes with a longer than normal travel indicates which of the following? a. Air in the hydraulic system b. Caliper piston seized c. Parking brake out of adjustment d. A faulty power booster Air in the hydraulic system is the only choice that creates a spongy pedal.
a. A only b. B only c. Both A and B d. Neither A nor B Insufficient clearance between the pads and caliper slider causes the slider not to move and only applies one brake pad causing only that pad to wear. Technician A is wrong because excessive rotor runout will cause brake pulsations with no effect on wear. 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. A only X b. B only c. Both A and B d. Neither A nor B Technician A is right because if the master cylinder pushrod is too short that will be a delay in application. Technician B is wrong because a faulty residual check valve if used will cause a spongy pedal due to the ingress of air.
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? a. A only b. B only c. Both A and B d. Neither A nor B Both technicians are wrong because this is how power brakes are supposed to operate. 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? a. A only b. B only c. Both A and B d. Neither A nor B Both technicians are correct.
A front wheel bearing is shown in the figure. 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. A only b. B only c. Both A and B d. Neither A nor B Both technicians are correct. 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? a. A only b. B only c. Both A and B d. Neither A nor B You torque an 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 is wrong because backing off the castle nut will not cause the bearing to overheat. The ABS (antilock brake system) and TRACTION OFF indicator lights remain ON with the engine running. Technician A says to check for ABS or TCS (traction control system) diagnostic trouble codes. Technician B says you can check for ABS or TCS blink codes by connecting two pins of the DLC (Data Link Connector). Who is right? a. A only b. B only c. Both A and B d. Neither A nor B Both technicians are correct. 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. A only b. B only c. Both A and B
d. Neither A nor B If the amber light is on it indicates an ABS fault and the system will revert to regular brake operation without ABS. Technician A is wrong because the parking brake only affects the RED Brake Light not the amber. There is a pulsation in the steering wheel only when the brakes are applied. Which of the following is most likely causing this condition? A. An out of round tire. B. Front rotor lateral runout. C. A cupped tire. D. Warped rear rotors. The pulsation caused by excessive front rotor runout is felt more in the steering wheel. Distorted or “warped” rear rotors are felt mostly in the seat. A vehicle with four-wheel disc brakes, ABS, and a vacuum brake booster has a hard brake pedal and an increased stopping distance. Which of the following is causing this condition? Bypassing master cylinder cup seals. A faulty brake booster. Worn brake pads. Air in the brake lines.
Symptoms of a faulty or leaking brake booster include a hard brake pedal, increased pedal effort, and an extended stopping distance. A vehicle drifts to the right while driving forward. Which of these could be the cause? A seized left front caliper. A restriction in the left front brake line. Leaking master cylinder cup seals. Sticking right front caliper slide pins. The slide pins can stick in their bores, preventing sufficient braking force and causing the brake pad to drag and wear prematurely. As a result, while driving forward, the vehicle will drift or pull to the side with the dragging front brake. A technician is replacing the brake shoes on a self-energizing drum brake system. All of the following statements are correct about replacing these brake shoes EXCEPT: The primary shoe faces the front of the vehicle. The secondary shoe has a shorter brake shoe lining. The secondary shoe faces the rear of the vehicle. Shoe lining can be riveted or glued to the shoe. The shoe with the shorter lining (the primary shoe) faces the front of the vehicle.
Adjusted brake pedal push rod is too short Front brake disc is worn Engine requires a tune-up to produce a higher vacuum at idle speed Defective check valve The defective check valve causes a loss in vacuum when the engine is off. That’s why the power assist begins to function properly after the engine runs. The other three answers wouldn’t cause the same issues. 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? A leaking power brake booster diaphragm A leaking brake booster check valve An internal leak in the combination valve An internal master cylinder leak The cause of the brakes that moves slowly to the floor is an internal master cylinder leak. What may be the cause of a spongy brake pedal? Frozen caliper piston Air in hydraulic system ABS Diagnostic Trouble Code set Defective metering valve.
Air causes a gap in the hydraulic fluid flow because the fluid has to compress the air before it can apply the piston. This delay causes the spongy feel. The other choices do not affect this concern. 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? X only Y only Both X and Y Neither X nor Y Y only If the amber light is on it indicates an ABS fault and the system will revert to regular brake operation without ABS. Technician X is wrong because the parking brake only affects the RED Brake Light not the amber. 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? Binding pedal linkage Dented brake line Plugged compensating port
fade is loss of stopping power that occurs when excessive heat reduces friction between brake shoe linings and drum. There are four types of brake fade. Mechanical fade occurs when the brake drum gets so hot it expands away from the brake linings. If the brake drum is machined beyond its limit the contact surface is further from the brake shoes and they move outward to maintain contact with the drum, causing the brake pedal to drop toward the floor as additional brake fluid moves into the hydraulic system. The other 3 choices would not cause brake fade. 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? Wash in hot, soapy water and dry. Repair leak and replace brake linings Clean with approved cleaner and reuse Replace the brake linings The leak must be repaired before the linings are replaced. The absence of free play on a vehicle’s brake pedal can lead to: Low brake pedal Pressure build-up and dragging brakes Fluid leaking beyond the primary piston cups Spongy brake pedal
When there’s no free play, the brakes can’t disengage fully. This leads to the brakes dragging. The other situations wouldn’t be caused by the lack of free play. 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 X says excessive rotor run out could be the cause. Technician Y says insufficient clearance between the pads and caliper slider could be the cause. Who is right? Both X and Y Neither X nor Y X only Y only Insufficient clearance between the pads and caliper slider causes the slider not to move and only applies one brake pad causing only that pad to wear. Technician X is wrong because excessive rotor runout will cause brake pulsations with no effect on wear. When the front brakes of a car with a drum/disc system are applied lightly, the front brakes lock up. This problem could be caused by a bad: Proportioning valve Pressure differential switch
