There are several fuses related to the system and there is a triple pressure switch which is located at the top of the receiver dryer. Additionally, there are relays to consider.
I'm not sure what is happening to the vehicle, so I can't suggest what to check. If it isn't working in general, take a look through this link and see if it helps:
Also, I attached the entire wiring schematic below for the manual AC system. If you have automatic temperature control, let me know and I'll get you those schematics.
Here is a link you may find helpful if you need to check the wiring:
Let me know if this helps.
Images (Click to enlarge)
Thursday, June 24th, 2021 AT 9:26 PM