There is a relay for the A/C, as well as a fuse in the fuse panel. Start by checking these to to see if they have power and the fuse is good. There is a single green wire that connects the compressor to the wiring harness, plus there should be a body ground bolted somewhere on the A/C frame. all these need to be connected and in good condition. Depending on the year you may also have wiring connections at the dryer that senses the pressure, if it is too low, it will keep compressor from running to protect it. Additionally, the switch in the dash has two wires (usually) connected to it. FOr wiring diagrams the best bet are the green covered Volvo service manuals. They are still available new from volvo, or used at auction sites online.
Two problems that a refrigeration system could have are compressor problems or a lack of or loss of refrigerant gas.
Drive the vehicle to your local auto parts store and they will test your charging system at no cost.
An hp recovery disc is a program that comes with your PC and is used when you begin having problems with your system software. It can diagnose problems or enable you to reboot your system in safe mode.
The A/C compressor should have a fuse/relay located (I believe) in the under-hood fuse box. Remove the fuse box cover, turn it over, and on the interior of the cover there should be an embossed diagram of what fuse/relay belongs to what system.
A simple system performance test will determine this. If you don't have a manifold gauge set, or don't know how to interpret the pressure readings to diagnose system faults, I'd recommend you have a shop do this.
The compressor is located on the front passenger side of the engine compartment just in front of the battery. (man, have we had problems with the whole suspension system!)
The compressor is located on the front passenger side of the engine compartment just in front of the battery. (man, have we had problems with the whole suspension system!)
Mechanical control system for an compressor?
The compressor is located on the front passenger side of the engine compartment just in front of the battery. (man, have we had problems with the whole suspension system!)
There a plethora of ways to diagnose problematic brake systems over the internet. Just answers(.)com can answer almost any question you may have based on the accurate information given.
To change the compressor on a system containing R-410A you must isolate the compressor then?
what is the responsibility of the compressor in the air condition system