ASE A5 Brakes Practice Test

1. 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.

1.

Answer A is wrong. Use a dial indicator to measure lateral runout.

Answer B is correct. 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.

Answer C is wrong. Answer B is correct.

Answer D is wrong. Answer B is correct.

2. A vehicle with a vacuum booster has a hard brake pedal. Which of the following is LEAST likely to cause this condition?

  • A. The master cylinder.
  • B. The vacuum check valve.
  • C. A clogged check valve hose.
  • D. Low manifold vacuum.

2.

Answer A is correct. Faulty master cylinders do not typically result in a hard brake pedal. It is more common for a faulty master cylinder to cause a low brake pedal that fades to the floor.

Answer B is wrong. A faulty vacuum check valve will result in a hard brake pedal.

Answer C is wrong. A clogged check valve hose will result in a hard brake pedal.

Answer D is wrong. Low intake manifold pressure will result in a hard brake pedal. Answers B, C, and D are all parts of the vacuum assist brake system.

3. A vehicle drifts to the right while driving forward. Which of these could be the cause?

  • A. A seized left front caliper.
  • B. A restriction in the left front brake line.
  • C. Leaking master cylinder cup seals.
  • D. Sticking right front caliper slide pins.

3.

Answer A is wrong. A frozen left front caliper will cause the vehicle to pull to the right when braking.

Answer B is wrong. A restriction in the left front brake line will cause the left front brake to drag after the brakes are released.

Answer C is wrong. Leaking master cylinder cup seals result in an internal leak, causing pressure loss and the pedal to fade to the floor when braking.

Answer D is correct. 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.

4. All of the following statements are correct about brake shoe replacement EXCEPT:

  • A. The primary shoe faces the front of the vehicle.
  • B. The secondary shoe has a shorter brake shoe lining.
  • C. The secondary shoe faces the rear of the vehicle.
  • D. Shoe lining can be riveted or glued to the shoe.

4.

Answer A is wrong. The primary shoe faces the front of the vehicle.

Answer B is correct. The shoe with the shorter lining (the primary shoe) faces the front of the vehicle.

Answer C is wrong. The secondary shoe faces the rear of the vehicle.

Answer D is wrong. Shoe lining can be riveted or glued to the shoe.

5. A customer states the TCS traction control system's warning light sometimes flashes while accelerating from a stoplight. Technician A says the TCS system controls wheel spin while accelerating on slippery surfaces. Technician B says it is normal for the warning light to flash when the system is active. Who is correct?

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

5.

Answer A is wrong. The TCS traction control system controls wheel slip and loss of traction during hard and sudden acceleration by reducing engine speed or applying individual brake units.

Answer B is wrong. A flashing TCS light is a normal response to slippery road conditions. It indicates that the system is activated and restoring traction to the wet or icy road surface.

Answer C is correct. Both technicians are correct.

Answer D is wrong. If the ABS and traction control light illuminate continuously, then the system should be inspected and scanned for codes.