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A/C Circuit Diagram of a Car

Model: (Various brands) Various
Part: Checks and maintenance

Video tutorial

The video shows the electrical diagram of the air conditioning (A/C) circuit of a car. At the centre of the system is the compressor, driven by a belt that compresses the refrigerant gas. Its operation is regulated by a pressure switch that protects the circuit from overpressure, and by a thermostat that monitors the internal temperature.

These sensors send signals to the A/C relay, which controls the activation or deactivation of the compressor to maintain the cabin at the desired temperature.

The electrical connection is completed by a dedicated fuse that protects the entire system from potential short circuits. Below, the cooling fan group comes into play to dissipate excess heat exchanged by the condenser.

In summary, the diagram highlights how mechanical components and electrical sensors work together to ensure an efficient and safe air conditioning system.


Posted on 28 June 2026 by ScegliAuto


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by ScegliAuto

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