ASE A2 Automatic Transmission Practice Test

36. Technician A says a leaking transmission oil cooler causes pink milky transmission fluid. Technician B says heat and oxidation can cause pink milky transmission fluid. Who is correct?

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

36.

Answer A is correct. Milky fluid is caused by contamination. This cross fluid contamination occurs in the transmission cooler when ATF is mixed engine coolant.

Answer B is wrong. Heat and time cause ATF breakdown and oxidation.

Answer C is wrong. Technician A is correct.

Answer D is wrong. Technician A is correct.

37. Technician A says the EPC (electronic pressure control) system regulates line pressure according to engine speed and torque. Technician B says the EPC system may contain a variable force solenoid. Who is correct?

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

37.

Answer A is wrong. 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.

38. Technician A says a transmission fluid temperature sensor (TFT) 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

38.

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.

39. Technician A says the electronic transmission control module uses the (ECT) engine coolant temperature sensor's input for (TCC) torque converter clutch control. Technician B says in today's electronic transmission, the (TPS) or throttle position sensor has replaced the governor. Who is correct?

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

39.

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.

40. A vehicle with an electronic automatic transmission is hunting for gears and having difficulty with shift timing. A scan indicates several sensors and shift solenoids are faulty. Technician A says to replace the sensors and rescan the system. Technician B says to inspect the circuits leading to these components. Who is correct?

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

40.

Answer A is wrong. Inspect and test related circuitry and wiring related to the component before replacing it.

Answer B is correct. Inspect the wiring, plugs and harness leading to the transmission case.

Answer C is wrong. Technician B is correct.

Answer D is wrong. Technician B is correct.