ASE A5 Practice Test Brakes Exam
Questions With Correct 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? - ANSWER - 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? - ANSWER - 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. - ANSWER - 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:
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. - ANSWER - 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? - ANSWER - 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? - ANSWER - 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. - ANSWER - 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? - ANSWER - 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 sensor
contacting the brake rotor. Who is correct? - ANSWER - 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.
Questions With Correct 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? - ANSWER - 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? - ANSWER - 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. - ANSWER - 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:
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. - ANSWER - 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? - ANSWER - 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? - ANSWER - 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. - ANSWER - 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? - ANSWER - 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 sensor
contacting the brake rotor. Who is correct? - ANSWER - 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.
