FOUND THE PROBLEM -
Sorry for the delayed response. So after lots of troubleshooting, parts swapping, phone calls, and even help from a toyota dealer, no one could figure this **** truck out, until I accidentally bumped a harness and found the open/short that was causing the issue. There is a little black box that houses a small circuit board, and is mounted right in front of the AC drive controller. I've been told this board starts charging the capacitors on key up. However the Toyota manual only refers to it as "Board". Anyway, there was a poor solder joint on the circuit board where the harness plugs into it. I noticed it when slightly tugging on that harness would cause the faults to display even when not driving.
I remove this unit, and swapped with another truck, and all is running fine. Has been for about 2 months now with no issues.
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