Operation of the dual wiper in a TPS

What is your question? How they operate or how to test or what? The TPS on the SC2 is not a dual wiper unit, it is a three wire with a 5 volt feed on the gray wire, a signal ground on the black wire and the signal to the PCM on the dark blue wire. As the throttle is moved you will see .4 volts with the throttle closed and close to 4.7 at WOT. During testing the voltage should rise smoothly from .4 up to the 4.7 mark. You will want a graphing meter or a scope to test it as small glitches that can cause problems may not show on a digital meter.