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Electrical Diagram of the Air Conditioning System

Model: (Various brands) Various
Part: Air conditioner

Video tutorial

In this video, you can see a very generic electrical diagram of an air conditioning system fitted to a modern vehicle. It all starts from the ignition key, which activates the fan connected to the battery and the relevant relay kit for this function.

The circuit includes the compressor and various switches. The diagram shows how they are interconnected, using lines of different colours that determine their functionality.

This should clarify some scenarios in case there are issues with the air conditioning operation, as you will know what each component is responsible for.


Updated on 20 September 2026 by ScegliAuto


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