How can I verify my TPS is bad or not?

What is your question?

If I unplug one of the 2 sensors on top of my throttle body, the car will start but only runs at a rough idle until gas peddle is pressed then dies. With car running at rough idle (as above) if I plug in "that" sensor, car will die. No engine codes reported. What are the two sensors on throttle body that are not the TPS?