Chrysler Repair: 99 LHS 3.5L: Code P0123 , smooth variation, signal wire

Question
Hey Roland I sent another follow-up to the last problem we discussed. Did it come through by chance? i could find an email confirmation. Thanks

Answer
This is the most recent Q and A:
QUESTION: Hey again, gave ya a great review, but now something else came up with the car.  I had the throttle body cleaned out and its doing much better regarding the idle. Still not perfect the idle fluctuates some, revving up and down every now and again.  We havent drove the car in a few days, but got in it this morning, pulled out and the check engine light came on. (It did seem to be doing fine, but i only drove about 100 ft then put it back in the driveway.  Pulled the code P0123.  my hope is that the TPS is just loose... any thoughts? Thanks!
Answer: Hi Casey,
That code says the voltage on the TPS signal wire is too high suggesting either that the wire itself is shorted to a voltage source (5v or 12v) somewhere along the harness, or that the TPS is shorted internally. I would unplug the TPS and see what the wires show: pin 1 violet/white should show 5v, pin 2 orange/dark blue should show no voltage between it and pin 3 (it is the signal wire), and pin 3 black/light blue should measure continuity to pin 43 of the pcm as that is the sensor 'ground' wire. If those check out, then I would suspect a problem in the TPS. Try measuring the resistance between the middle pin and both of the outer pins as you move the throttle: they should show smooth variation of the resistance across the full range of motion, inversely to one another.
Roland
PS Thanks for the rating. You are entitled to do it again if you so choose.