Yes, see link, but note: I would just by a multimeter instead of a test light (you can get a multimeter for as little as $3 from harbor freight)
Turn on ac and watch clutch on front of ac compressor. If clutch doesn't engage then AC relay is bad. Or you can follow the schematic on the side of the relay and use a volt meter to test it.
BAD RELAY answer bad switch bad relay and most likely, bad clutch
Check relay
You may have a bad compressor clutch coil, you need to check the coil and work from there................
also check the AC clutch check for blown fuse... a possible bad blower motor relay
See if you are getting voltage at the relay when you turn the AC on. Check your wiring and connectors before replacing PCM, I doubt that is your problem.
Bad fan motor? Check to see if you are getting power to it Bad Switch? Bad fan relay?
there are a few things that will cause this, relay or fuse to ac blown, if low on freon ac will not work. check and see if clutch on ac motor works. if not its the relay.
Check to see what stops working when the fuse blows. If it is the compressor itself, then either the ac clutch or the ac relay has probably gone bad.
Check the blower motor fuse. Also check the fan relay and resister pack, If all of these are ok then the blower motor probably is bad.
check fuse or ac relay in under hood fuse box.. if out of coolant ac clutch will not engage,this is a safety feature!!
The thermal relay may be bad.