What to Do When the Car Air Conditioning Compressor Fails to Engage and Operate?

1 Answers
VanLouis
07/30/25 3:38am
The reasons for the car air conditioning compressor failing to engage and operate include compressor circuit issues and intake air temperature sensor failure. If it's a compressor circuit problem, the solution is to disconnect the power supply of the compressor relay and use a jumper to test the compressor's pins to determine if the circuit is functioning properly. Disconnect the power supply of the compressor relay, jump the compressor's pins to make the compressor engage. If it's an intake air temperature sensor failure, the solution is to repair or replace the intake air temperature sensor or the temperature control sensor. The inability to sense temperature means the electrical signal cannot be transmitted, and the compressor cannot engage. In this case, simply replacing the temperature control sensor will suffice. The air conditioning compressor plays a role in compressing and driving the refrigerant in the air conditioning refrigerant circuit. The air conditioning compressor is usually installed in the outdoor unit. The air conditioning compressor draws refrigerant from the low-pressure area, compresses it, and sends it to the high-pressure area for cooling and condensation. The heat is dissipated into the air through the radiator, and the refrigerant changes from a gaseous state to a liquid state, with increased pressure. The working circuit of the air conditioning compressor is divided into the evaporation area (low-pressure area) and the condensation area (high-pressure area).
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