Hi, I have a 2002 V70. AC not working as advertised. I can get the clutch to engage and it cools down nicely by jumpering the relay, and also by applying 12v to the clutch wire at the compressor. I know for sure that when jumpering the relay, the compressor is always on - forgot to check the other way but would assume this to also be the case. I've been doing some looking around online and with respect to pressure switches and the only thing I came up with was about a thermal cutout switch on the compressor. I went to look for it and don't see anything.

Does anyone have any AC system diagrams and or principles of operation? - Having this would help me immensely. Any other suggestions are greatly appreciated also!

Thanks...