I've searched and searched for a write up to make a checker lamp for the tps sensor. But I haven't found anything, my idle is crappy and I think the tps is to blame. I found the step-by-step for the error code for an s4, but I need a step-by-step for an s4 checker lamp for the tps. As shown here.

http://www.geocities.com/huguesdc1/Graphics/tps.jpg

 

Can't bring the page up, but just use a voltmeter if you have one. Insert the positive in the single unit, then insert the positive in each of the others alternately. If you get a reading in only one combo your good. Naturally if no reading, or a reading in both, you must adjust.