Low refrigerant pressure. There is a switch on the low side of the system that will simply disable the compressor if there isn't enough refrigerant. Plus it does it with no codes. Add a can of refrigerant and it should be operational again.
If you need to get the compressor to run for the system to take refrigerant, unplug the pressure switch Krashed previously mentioned and jump it with a paper clip. The compressor will run so you can fill with freon.
You need to clear the codes in the a/c and heater controles to get it to work , you can jump all the plugs you want it wont come on without clearing the codes, someone on here has to have the presedure .. i'll try and hunt it down and post it?
Ranger has to know...
gentlemen I seem to be having the same problem ? I am new to your site and trying to find my way around. where is the "sticky post section ?" I need ac compressor to run to suck refrigerant into system.
thanx for any help you might offer
I have a SWEET 99 DeVille D'elegance that needs some TLC