I have a Haynes manual and I have been relentlessly going over it, trying to figure out how I can trying checking the possible problems the code spit out which are
1) AC Switch
2) TPS circuit
3) TPS
4) Computer
Does anyone have any ways I can go about testing each option until I find the real problem?

 

I own a 1986 Toyota 4runner . I am having the same issue, I have replaced the tps and computer and neither solved the issue. I hope this helps narrow it down for you.

 

That does help narrow it down for me, thank you for helping.