Im not sure what else to check. Ac is not working. It set a PO533 a while back. I put a high pressure switch on it and no changes. There is continuity through the coil and it's only showing 10.85 volts making it to the compressor. Pressures look good. I'm at the point, I'm not sure where to go from here. Any help would be appreciated.

 

Jumper the switch and see what happens. Could get a bad switch from factory. Did you check pressures at all to see if the switch should be activating?