ASE A5 Brakes Certification
Competency Exam Study Guide
Comprehensive Resource To Help You Ace 2026-2027
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. Rotor lateral runout is greater than specification. This would most likely result in:
a. Vibration while braking.
b. Spongy brakes.
c. A hard brake pedal.
d. A low brake pedal. - Correct Answer: A
2. Technician A says the parking brake adjustment may prevent the drum from fitting over
new brake shoes. Technician B says some parking brakes are adjustable at the parking
brake lever. Who is correct?
a. A
b. B
c. Both A and B
d. Neither A nor B - Correct Answer: C
3. On a three-channel ABS system:
a. The front wheels will share an ABS sensor.
b. The rear wheels will share an ABS sensor.
c. The left side will share an ABS sensor.
d. The right side will share an ABS sensor. - Correct Answer: B
,4. The drum brake squeaks when the brakes are applied. Technician A says the shoes may
be worn out. Technician B says the drum may be out of round. Who is correct?
a. A
b. B
c. Both A and B
d. Neither A nor B - Correct Answer: A
5. A car with a vacuum brake booster is idling too fast. When the vacuum line going to the
brake booster is crimped shut the idle decreases to normal. Which of the following is the
most likely cause?
a. The vacuum check valve is leaking.
b. The metering valve is leaking.
c. The proportioning valve is leaking.
d. The brake booster is leaking. - Correct Answer: D
6. A vehicle pulls to the left while braking. All of the following could cause this EXCEPT:
a. Sticking right front caliper piston.
b. Sticking metering valve.
c. Worn suspension components.
d. Restricted right front brake line. - Correct Answer: B
7. The parking brake will not fully release. All of the following could be the cause EXCEPT:
a. Air in the brake fluid.
b. Binding parking brake cable.
c. Broken return spring.
d. Rusted actuator piston. - Correct Answer: A
8. The disc brake rotor thickness variation is greater than specification. This would most
likely result in:
a. Pedal pulsation.
b. Spongy brakes.
c. A hard brake pedal.
d. A low brake pedal. - Correct Answer: A
,9. The height sensing proportioning valve:
a. Limits the rear brake pressure when the rear is fully loaded.
b. Limits the rear brake pressure when the rear is lightly loaded.
c. Limits the front brakes when the front is fully loaded.
d. Limits the front brakes when the front is lightly loaded. - Correct Answer: B
10. A vehicle is equipped with a vacuum brake booster. When the engine is running and the
brakes are applied there is a constant sound of air movement (vacuum) around the
brake pedal area. Technician A says the vacuum check valve is leaking. Technician B says
the vacuum booster is leaking. Who is correct?
a. A
b. B
c. Both A and B
d. Neither A nor B - Correct Answer: B
11. Technician A says some wheel speed sensors are adjusted using a feeler gauge.
Technician B says some ABS wheel speed sensors are adjusted using a paper spacer,
which comes with the new wheel speed sensor. Who is correct?
a. A
b. B
c. Both A and B
d. Neither A nor B - Correct Answer: C
12. The technician is replacing a section of steel brake line. The brake line should be cut with
a:
a. Hacksaw.
b. Tubing cutter.
c. Torch.
d. Pipe cutter. - Correct Answer: B
13. Which of the following would be considered maximum thickness variation for a disc
brake rotor?
, a. 0.0005"
b. 0.002"
c. 0.010"
d. 0.025" - Correct Answer: A
14. Which of the following would cause a glazed drum?
a. A dragging shoe
b. Air in the hydraulic system
c. Missing brake shoe lining
d. A frozen wheel cylinder - Correct Answer: A
15. The parking brake will not apply. All of the following could be the cause EXCEPT:
a. A broken parking brake cable.
b. A broken return spring.
c. A loose drum brake adjustment.
d. A stretched parking brake cable. - Correct Answer: B
16. Replacement metal brake lines should be constructed of:
A. Copper.
B. Steel.
C. Aluminum.
D. Brass. - Correct Answer: B
17. Technician A says digital wheel speed sensors will have voltage supplied to them through
the ABS control module. Technician B says digital wheel speed sensors are tested using
an ohmmeter. Who is correct?
A. A
B. B
C. Both A and B
D. Neither A nor B - Correct Answer: A
18. While installing the disc brake caliper boot it is ripped. Technician A says this will cause a
brake fluid leak. Technician B says this will cause a low, soft brake pedal. Who is correct?
Competency Exam Study Guide
Comprehensive Resource To Help You Ace 2026-2027
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. Rotor lateral runout is greater than specification. This would most likely result in:
a. Vibration while braking.
b. Spongy brakes.
c. A hard brake pedal.
d. A low brake pedal. - Correct Answer: A
2. Technician A says the parking brake adjustment may prevent the drum from fitting over
new brake shoes. Technician B says some parking brakes are adjustable at the parking
brake lever. Who is correct?
a. A
b. B
c. Both A and B
d. Neither A nor B - Correct Answer: C
3. On a three-channel ABS system:
a. The front wheels will share an ABS sensor.
b. The rear wheels will share an ABS sensor.
c. The left side will share an ABS sensor.
d. The right side will share an ABS sensor. - Correct Answer: B
,4. The drum brake squeaks when the brakes are applied. Technician A says the shoes may
be worn out. Technician B says the drum may be out of round. Who is correct?
a. A
b. B
c. Both A and B
d. Neither A nor B - Correct Answer: A
5. A car with a vacuum brake booster is idling too fast. When the vacuum line going to the
brake booster is crimped shut the idle decreases to normal. Which of the following is the
most likely cause?
a. The vacuum check valve is leaking.
b. The metering valve is leaking.
c. The proportioning valve is leaking.
d. The brake booster is leaking. - Correct Answer: D
6. A vehicle pulls to the left while braking. All of the following could cause this EXCEPT:
a. Sticking right front caliper piston.
b. Sticking metering valve.
c. Worn suspension components.
d. Restricted right front brake line. - Correct Answer: B
7. The parking brake will not fully release. All of the following could be the cause EXCEPT:
a. Air in the brake fluid.
b. Binding parking brake cable.
c. Broken return spring.
d. Rusted actuator piston. - Correct Answer: A
8. The disc brake rotor thickness variation is greater than specification. This would most
likely result in:
a. Pedal pulsation.
b. Spongy brakes.
c. A hard brake pedal.
d. A low brake pedal. - Correct Answer: A
,9. The height sensing proportioning valve:
a. Limits the rear brake pressure when the rear is fully loaded.
b. Limits the rear brake pressure when the rear is lightly loaded.
c. Limits the front brakes when the front is fully loaded.
d. Limits the front brakes when the front is lightly loaded. - Correct Answer: B
10. A vehicle is equipped with a vacuum brake booster. When the engine is running and the
brakes are applied there is a constant sound of air movement (vacuum) around the
brake pedal area. Technician A says the vacuum check valve is leaking. Technician B says
the vacuum booster is leaking. Who is correct?
a. A
b. B
c. Both A and B
d. Neither A nor B - Correct Answer: B
11. Technician A says some wheel speed sensors are adjusted using a feeler gauge.
Technician B says some ABS wheel speed sensors are adjusted using a paper spacer,
which comes with the new wheel speed sensor. Who is correct?
a. A
b. B
c. Both A and B
d. Neither A nor B - Correct Answer: C
12. The technician is replacing a section of steel brake line. The brake line should be cut with
a:
a. Hacksaw.
b. Tubing cutter.
c. Torch.
d. Pipe cutter. - Correct Answer: B
13. Which of the following would be considered maximum thickness variation for a disc
brake rotor?
, a. 0.0005"
b. 0.002"
c. 0.010"
d. 0.025" - Correct Answer: A
14. Which of the following would cause a glazed drum?
a. A dragging shoe
b. Air in the hydraulic system
c. Missing brake shoe lining
d. A frozen wheel cylinder - Correct Answer: A
15. The parking brake will not apply. All of the following could be the cause EXCEPT:
a. A broken parking brake cable.
b. A broken return spring.
c. A loose drum brake adjustment.
d. A stretched parking brake cable. - Correct Answer: B
16. Replacement metal brake lines should be constructed of:
A. Copper.
B. Steel.
C. Aluminum.
D. Brass. - Correct Answer: B
17. Technician A says digital wheel speed sensors will have voltage supplied to them through
the ABS control module. Technician B says digital wheel speed sensors are tested using
an ohmmeter. Who is correct?
A. A
B. B
C. Both A and B
D. Neither A nor B - Correct Answer: A
18. While installing the disc brake caliper boot it is ripped. Technician A says this will cause a
brake fluid leak. Technician B says this will cause a low, soft brake pedal. Who is correct?
