I have a 1998 Subaru Legacy Outback and I'm having trouble with the air conditioning. When I press the AC button on the dash, the green light comes on, and the blower motor is blowing air, but air is not cold. The radiator fans do not come on, and the compressor clutch does not engage. I've checked all the fuses, and they are good. I've also tested all 4 of the AC relays in the fuse box under the hood, and they are good as well. The compressor clutch coil measures about 5 ohms which seems OK. The pressure switch is measuring about 1 ohm, which indicates I have good coolant pressure as well (if I'm measuring that correctly). I don't know what else to look at at this point, and I can't find any sort of wiring diagram for the AC system. Anyone have any thoughts?