Skipton has mentioned trying to turn the pulley on the compressor to see, but I'm not done that myself. Scan does not show a dead compressor. It doesn't know if there is lack of refrigerant (no pressure sensor) or just dead compressor. The G263 monitors the cold air output so it is the closest sensor telling you something _could_ be wrong with the compressor. And if the G263 can be proven to work, it is highly likely to be the compressor.
My suggestion to check, is either tap from behind the CC unit or at the compressor's plug using wire crimps. It is driven by a pulse voltage on the wires, you'll need an oscilloscope to see the real voltage signal. But you could just use a DC voltage reading, see it changes when you set AC to Hi or ECON. If the voltage reading reacts to switches, it means your CC is trying to get the compressor to work, and if no cold air and that there is enough refrigerant, the compressor is dead. I changed mine myself and called a mobile gas recharge man to charge it up before I started the engine - don't run it without enough refridgerant. Good luck!
