How do you check to see if the throttle position sensor is okay on a Daewoo Leganza?

3 very quick and obvious things that will tell you the TPS is operating correctly. 1) If no signal is being received, the transmission will stay in 3rd gear and will not shift. 2) If high voltage exist, the transmission will shift very late if at all but will take of in 1st gear. 3) The check engine light will be on.