ASE A5 PRACTICE TEST BRAKES. EXAM 2025 QUESTIONS AND ANSWERS

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? - ANS TECH B is correct. The ABS system runs a system check when the key is first turned to the ON position. The valves sometimes make a clicking noise during this check. A hydro-boost brake system has reduced braking performance. Technician A says to check the power steering system. Technician B says to check the vacuum check valve. Who is correct? - ANS TECH A is correct. The power steering pump produces pressure for the Hydro-Boost unit. A vehicle with power assisted brakes has a hard brake pedal. Which of the following is LEAST likely to cause this condition? A. Master cylinder. B. Vacuum check valve. C. Brake booster. D. Low manifold vacuum. - ANS Answer A is correct. Faulty master cylinders do not typically result in a hard brake pedal. Actually it's more common for a faulty master cylinder to cause a low brake pedal that fades to the floor as it is applied. This is the least likely component listed to result in a hard brake pedal. A vehicle pulls to the left only when the brakes are applied. This condition is MOST likely caused by: ASE A5 PRACTICE TEST BRAKES. EXAM 2025 QUESTIONS AND ANSWERS COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 2 A. A seized left front caliper. B. A restriction in the left front brake line. C. Leaking master cylinder cup seals. D. A seized right front caliper. - ANS Answer D is correct. A frozen right front caliper will cause the vehicle to pull to the left when braking. Technician A says accumulators are found only on non-integral ABS systems. Technician B says some integral ABS units contain high pressure accumulators that must be discharged before repair. Who is correct? - ANS TECH B is correct. High pressure units can be dangerous and must be discharged before removal. Always check with manufacturer's procedures before disassembling an ABS unit Technician A says ABS control units are programmed to ignore speed sensor input variations below a certain threshold. Technician B says a one-channel ABS system controls hydraulic pressure to the rear brake units. Who is correct? - ANS Both technicians are correct. A vehicle's right front wheel has a growl that increases with vehicle speed. The MOST likely cause is: A. Excessive rotor lateral run out. B. Warped rear brake drums. C. Worn CV-Joint. D. Worn wheel bearing. - ANS Answer D is correct. A worn wheel bearing will cause a growl that increases with vehicle speed. 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? - ANS Technician B is correct. The constant low pressure, usually 6 psi to 8 psi keeps air from entering the wheel cylinders. 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 COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 3 sensor contacting the brake rotor. Who is correct? - ANS TECH B is correct. When the sensors tip contacts the rotor, the pad warning light illuminates on the instrument panel. The rear wheels of a vehicle are locking up only when the brakes are applied. This is caused by a faulty: A. Metering valve. B. Pressure differential switch. C. Proportioning valve. D. Brake switch. - ANS Answer C is correct. The proportioning valve prevents rear wheel lockup. Which of the following brake fluids are silicone based. A. Dot 2 B. Dot 3 C. Dot 4 D. Dot 5 - ANS Answer D is correct. Dot 5 brake fluid is silicon based. A vehicle stops but the brake pedal fades completely to the floorboard afterwards. There are no external leaks. Which of these is the MOST likely cause of this condition. A. Faulty vacuum brake booster. B. Clogged vacuum booster check valve. C. Dark discolored brake fluid. D. Master cylinder cup seals. - ANS Answer D is correct. Master cylinder cup seals wear and create an internal leak. The pedal fades to the floor as fluid bypasses the seal. Two technicians are inspecting a brake drum for wear. Technician A says if the brake drum has small cracks along it's inside lining it should be replaced. Technician B says if a brake drum has minor pitting along it's inside lining it may be resurfaced. Who is correct? - ANS Both technicians are co