Chrysler TPS Readings

Is it normal for a Chrysler TPS to read around 14-15% when throttle closed and only around 75% WOT (engine off and key on)? My scan tool shows all three of my 98 Grand Caravan, 2001 Neon, and 2003 T&C with the same readings as indicated. Vehicles run fine. Reason I ask is I also have a 97 Chevy Lumina that reads 0% closed and 100% WOT. Is this just a chrysler thing? Wanted some advice as it seems unlikely I've got three bad sensors on three different Chrysler vehicles all giving me the exact same bad readings. Thanks

Yes normal. Chrysler' are mostly a speed density system; no MAF ( mass air flow sensor). Your Lumina has a MAF which gives an input of the airflow into the engine. 2 completely different systems. Each work as they are designed and you don't have codes for TPS votage high so don't worry about it. System working as designed.

Ok. I appreciate the response and thanks for the detailed explanation.