ASE A5 Brakes Practice Test
1. During a brake inspection it is noticed that one pad is worn more than the other. Which of the following is LEAST likely to cause this condition?
- A. Air in the system
- B. Misalignment
- C. Sticking caliper slide pins.
- D. Sticking caliper piston.
Answer A is correct. This is a least likely type question. Air in the system will result in a soft spongy brake pedal.
Answer B is wrong. Misalignment will cause uneven brake pad wear.
Answer C is wrong. Sticking caliper slide pins is common and will cause uneven brake pad wear.
Answer D is wrong. A sticking caliper piston will also cause uneven brake pad wear.
2. The red brake warning light is illuminated on the instrument panel of a vehicle with four wheel disc brakes. Which of these is LEAST likely to cause this warning light to illuminate.
- A. Low brake fluid level.
- B. Unequal brake fluid pressure.
- C. Grounded parking brake circuit.
- D. Loose wheel speed sensor plug.
Answer A is wrong. This will illuminate the red brake light. Inspect the brake fluid level and the reservoir cap when the red warning light is illuminated.
Answer B is wrong. Unequal fluid pressure will move the pressure differential switch illuminating the red brake warning light.
Answer C is wrong. The red warning light indicates a problem with the hydraulic system or parking brake engagement.
Answer D is correct. Answer D is correct because this is the only answer that would illuminate the amber warning light instead of the red brake warning light.
3. The right brake light is inoperative when the brake pedal is depressed. All the other lights function properly. Which of the following should be inspected when diagnosing this inoperative brake light circuit?
- A. The right rear bulb socket.
- B. The right rear bulb.
- C. The brake light fuse.
- D. Both A and B
Answer A is wrong. Only because both answers A and B are correct. Check the bulb and the socket for proper fit and operation.
Answer B is wrong. The right rear bulb and socket should be inspected.
Answer C is wrong. The fuse protects the entire circuit. The left brake light circuit would also be inoperative if the fuse was loose or blown.
Answer D is correct. Both A and B are correct. Check the socket and the bulb for operation and resistance.
4. After installation of brake pads, the pad manufacturer recommends performing a burnishing procedure. Technician A says this is accomplished by repeating several high speed stops. Technician B says this process includes light application of the brake pedal and a brief cool down period between stops. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
Answer A is wrong. Technician B is correct. The procedure involves easy stops from 30 mph not hard stops from 55 mph.
Answer B is correct. The burnishing or break in procedure cures the friction materials in the pads. It provides for better braking performance.
Answer C is wrong. Technician B is correct.
Answer D is wrong. Technician B is correct.
5. A master cylinder reservoir cap’s rubber gasket is deformed. Which of the following would result in this condition?
- A. Adding too much brake fluid.
- B. Adding too little brake fluid.
- C. Brake fluid contamination.
- D. Allowing the brake fluid to get too low.
Answer A is wrong. Adding too much fluid will not result in a deformed gasket.
Answer B is wrong. Adding too little fluid will not result in a deformed gasket.
Answer C is correct. Brake fluid contamination, especially petroleum products, will cause gasket deformation.
Answer D is wrong. Answer C is correct.