You would get low input or high input codes thrown for improper voltage.
However, to check the TPS voltage, you need to turn the key to the acc position. Then back probe the TPS sensor plug. I'm not sure the Ram readings but it'll be somewhere around say 1.6-2v when the T/B is in the closed position. Then as you open up the T/B, the voltage should rise and stop around like 4-5v???. Something like that. Again, not sure what those numbers should be, but they are fairly close. A Haynes manual would tell you exactly what the voltage should read at open and closed.
I would say that the T/b is causing the issue's not the TPS. Maybe truckin(Truckin151) or Teach (off_road_teacher) can chime in as they have the fastman. i think it wasTruckin who had his edge filed down on the inside which helped throw less codes or have issue's. Again, throwin this out there to get chewed up. I'm not 100% sure on what his issue was.