ASE A5 Brakes Practice Test
51. A vehicle with a Hydroboost brake system has reduced braking performance. Which of the these could be the cause?
- A. Low manifold vacuum.
- B. A faulty vacuum check valve.
- C. A clogged inlet valve.
- D. A faulty power steering pump.
52. Which of the following input sensors are used by the traction and stability control systems?
- A. Yaw Rate Sensor
- B. Steering Angle Sensor
- C. Wheel Speed Sensor
- D. All of the above.
53. A technician is lubricating rubber brake components while performing a brake job. Technician A says to use a high-temperature silicon-based lubricant. Technician B says to use a petroleum-based lubricant. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
54. A technician is testing a vehicle with a vacuum assist brake booster. After pumping the brake pedal several times and starting the engine, the pedal drops toward the floor about ¼ of an inch. Which of the following statements is correct?
- A. This is normal.
- B. The brake booster is faulty.
- C. The master cylinder is faulty.
- D. There is air in the brake system.
55. The front brake pads on a vehicle with a quick take-up master cylinder need replacement. They were recently replaced. Technician A says this is a low drag brake system. Technician B says the master cylinder quick take-up valve could be sticking. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
