When in DIAG for the TPS I've noticed that it jumps five numbers, from 15 to 20 at minimal throttle opening then it rises to a maximum of 99 without missing a number.
The APS rises from closed throttle to full throttle without missing a number, as it should.
I need to know if this is normal. Hopefully someone either knows the answer or can check their 15 or 16 Tracer.