ASE A2 Automatic Transmission Practice Test

1. Technician A says an internal transmission cooler is cooled by the engine's cooling system. Technician B says if the transmission fluid appears pink and milky, the transmission has been overheated and oxidation has occurred. Who is correct?

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

1.

Answer A is correct. Heat quickly causes breakdown of automatic transmission fluid. Internal transmission coolers transfer this damaging heat from the ATF to the engine's coolant.

Answer B is wrong. Milky fluid is caused by contamination. This cross fluid contamination occurs in the transmission cooler when ATF is mixed engine coolant. This is different from fluid oxidation. Heat and time cause ATF breakdown and oxidation.

Answer C is wrong. Technician A is correct.

Answer D is wrong. Technician A is correct.

2. Most modern transmissions use computerized electronics to control shift quality and timing. Technician A says EPC (electronic pressure control) regulates line pressure according to engine speed and torque. Technician B says the EPC solenoid is a variable force solenoid. Who is correct?

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

2.

Answer A is wrong. This is true, the EPC or electronic pressure control solenoid regulates line pressure according to engine speed and torque.

Answer B is wrong. The EPC solenoid is considered a VFS or variable force solenoid.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.

3. Technician A says a transmission fluid temperature sensor is a thermistor. Technician B says a scan tool and an ohmmeter can be used to diagnose a TFT sensor. Who is correct?

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

3.

Answer A is wrong. The transmission fluid temperature sensor is a thermistor.

Answer B is wrong. A scan tool and an ohmmeter can be used to diagnose a TFT sensor.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.

4. Technician A says the electronic transmission control module uses information from other control modules. The ECT engine coolant temperature sensor's input is used for TCC torque converter clutch control. Technician B says in today's electronic transmission, the governor has been replaced by the TPS or throttle position sensor . Who is correct?

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

4.

Answer A is correct. Transmission control modules use the ECT signal to delay TCC engagement until the engine reaches the required temperature.

Answer B is wrong. TCM's use information from both engine and transmission sensors. Many older mechanical components have been replaced with an electronic counterpart. The governor has been replaced with the VSS or vehicle speed sensor.

Answer C is wrong. Technician A is correct.

Answer D is wrong. Technician A is correct.

5. An automatic transaxle slips only while turning corners. Which of the following has caused this condition?

  • A. Worn Band
  • B. Torque Converter Clutch
  • C. Low Fluid Level
  • D. Planetary Gearset

5.

Answer A is wrong. A worn band will also slip while traveling forward.

Answer B is wrong. The torque converter clutch would not cause this problem.

Answer C is correct. When the fluid level is low the filter will draw air while cornering. This will cause aerated transmission fluid.

Answer D is wrong. The planetary gear set would not cause this problem.