ASE A2 Automatic Transmission Practice Test
1. After a long drive, red fluid is seen on the transmission case and under the chassis of a vehicle. Technician A says this could be caused by fluid aeration. Technician B says this could be caused by engine overheating. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
Answer A is wrong. Low or high fluid levels result in aeration. Overfilling or overheating a transmission results in fluid flowing from the vent or fill tube.
Answer B is wrong. Transmission fluid is cooled in the cooler located in the coolest radiator well of the engine's cooling system.
Answer C is correct. Both technicians are correct.
Answer D is wrong. Both technicians are correct.
2. There are metal flakes and shavings at the bottom of a transmission's oil pan. Which of the following is causing this debris?
- A. This is normal.
- B. A worn band.
- C. A worn clutch.
- D. Chipped gear teeth.
Answer A is wrong. This is not a normal condition.
Answer B is wrong. It is normal to find fine particles, especially around the magnet.
Answer C is wrong. Black pieces found in the bottom of the pan indicate worn clutch and band friction material.
Answer D is correct. Metal flakes and shavings found in the bottom of the oil pan indicate chipped or worn gearset teeth.
3. A vehicle with an automatic transmission creeps forward in neutral. Which of the following is MOST likely causing this condition?
- A. The pressure regulator valve.
- B. The manual valve.
- C. A shift valve.
- D. The throttle valve.
Answer A is wrong. The pressure regulator valve controls mainline pressure.
Answer B is correct. A worn or misadjusted manual valve can lead to pressure bleed between hydraulic circuits.
Answer C is wrong. Shift valves control the reactionary devices (clutches and bands).
Answer D is wrong. Answer B is correct.
4. When removing a torque converter from an automatic transmission, the technician should:
- A. Measure the depth of the torque converter into the transmission's bell housing before removal.
- B. Inspect the torque converter's hub for discoloring, nicks, scratches, and burrs.
- C. Both A and B.
- D. Neither A or B.
Answer A is wrong. Measure the depth of the torque converter into the transmission's bell housing to ensure that the converter is correctly aligned with the transmission oil pump when reinstalling.
Answer B is wrong. Small nicks, scratches, and burrs can be removed from the hub using fine crocus cloth.
Answer C is correct. Both answers are correct.
Answer D is wrong. Both answers are correct.
5. A vehicle's automatic transmission is not downshifting correctly. A vacuum hose is detached and hanging down by the transmission pan. This vacuum hose should be connected to which of the following?
- A. The Governor.
- B. The Throttle Position Sensor.
- C. The Modulator.
- D. The Vehicle Speed Sensor.
Answer A is wrong. Governors are used in hydraulically controlled transmissions to indicate vehicle speed.
Answer B is wrong. A throttle position sensor is used in today's electronically controlled transmissions to indicate load. They replace the modulators used in older transmissions.
Answer C is correct. A modulator is a vacuum controlled device that controls throttle pressure.
Answer D is wrong. Vehicle speed sensors replace the governor in older hydraulic transmissions.