You have it a little wrong

The high fan has nothing to do with the a/c system...and yours seems to be working correctly at 105 coolant temp.
A/c fan is LOW fan only. That is triggered by a/c high pressure sw . The test for that circuit is to jumper the sw at the reciever/drier with the pigtail wires on it. That should verify low fan circuit. If fan comes ON w/jumper, then you hav a bad sw. or low on refrigerant [ the latter being the most likely diagnosis]
If NO fan w/jumper, resistor.relay/fuse are problem
First tests is jumper high pressure sw..................