ASE A5 Brakes Practice Test

6. 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.

6.

Answer A is wrong. Excessive lateral rotor run-out will result in a pulsating feeling in the brake pedal (front) or the drivers seat (rear).

Answer B is wrong. A warped brake drum is similar to a warped rotor and will result in a pulsating feeling in the brake pedal (front) or the drivers seat (rear).

Answer C is wrong. A worn CV- Joint will produce a clacking noise while cornering.

Answer D is correct. A worn wheel bearing will cause a growl that increases with vehicle speed.

7. 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?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

7.

Answer A is wrong. The residual check valve is used on vehicle's with drum brakes.

Answer B is correct. The constant low pressure, usually 6 psi to 8 psi keeps air from entering the wheel cylinders.

Answer C is wrong. Technician B is correct.

Answer D is wrong. Technician B is correct.

8. 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?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

8.

Answer A is wrong. This is usually caused by the sensors tip touching the rotor. If the brake pads have become contaminated the pads must be replaced.

Answer B is correct. When the sensors tip contacts the rotor, the pad warning light illuminates on the instrument panel.

Answer C is wrong. Technician B is correct.

Answer D is wrong. Technician B is correct.

9. 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?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

9.

Answer A is wrong. This is a normal condition.

Answer 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.

Answer C is wrong. Technician B is correct.

Answer D is wrong. Technician B is correct.

10. 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.

10.

Answer A is wrong. The metering valve delays front brake application. They provide for balanced braking.

Answer B is wrong. The pressure differential switch warns the driver of a hydraulic leak.

Answer C is correct. The proportioning valve prevents rear wheel lockup.

Answer D is wrong. The brake switch is part of the brake light system.