Automotive Service Excellence (ASE) Air Conditioner Certification Practice Exam 2025 – Your All-in-One Guide to Exam Success!

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What action should a technician take if the A/C compressor is not cycling on and off properly?

Replace the engine oil

Check for electrical issues or low refrigerant levels

When the A/C compressor is not cycling on and off properly, it indicates a potential issue that affects the compressor's operation. The most relevant action a technician should take is to check for electrical issues or low refrigerant levels.

Electrical issues might include broken connections, faulty relays, or a malfunctioning pressure switch that can prevent the compressor from receiving the signal to turn on or off. Low refrigerant levels can also cause cycling problems. If the system is low on refrigerant, it may not build enough pressure for the compressor to engage, leading to improper cycling or a more significant operational failure.

By focusing on these areas, the technician can identify and address the root cause effectively, ensuring the A/C system functions as designed.

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Change the transmission fluid

Inspect the spark plugs

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