ASE A7 Heating Air Conditioning Practice Test
6. An EATC air conditioning system has low fan speed operation during high demand situations, like in direct sunlight. Technician A says this is because something is covering the sun load sensor's photodiode. Technician B says to test the sun load sensor with an ohmmeter. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
7. There's a gurgling sound inside the dashboard of a vehicle. Technician A says an air pocket in the heater core makes this sound. Technician B says a leaking head gasket can cause air pockets in the engine's cooling system. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
8. A manifold gauge indicates a system has low discharge pressure. The MOST likely cause of this condition is:
- A. A restricted condenser.
- B. A loose fan belt.
- C. A damaged compressor reed valve.
- D. A broken compressor piston.
9. The compressor is rapidly cycling on and off on a CCOT air conditioning system. Technician A says this condition can be caused by a low refrigerant charge. Technician B says this could be caused by a faulty clutch cycling switch. Who is correct?
- A. Technician A
- B. Technician B
- C. Both A and B
- D. Neither A or B
10. There is a short to ground at point D of the electrical diagram above. Which of the following statements is true?
- A. The clutch would not engage when powered.
- B. The relay would remain open.
- C. The PCM would not receive a signal from the clutch.
- D. The clutch would engage whenever powered.
