2000 f53 chassis. P00113 code. voltage too high. The 5.0 volt reference voltage is present at the switch (grey wire) . Grey/red wire is the return and it shows a perfect ground. The switch checked out with the 5 volts to the pin. A little heat and the voltage adjusts accordingly. Switch is good tested by itself. No matter what I do, I get -40 in my live data. I am afraid this means a new PCM. Ouch!! What am I missing?

 

welcome to this site,your post has been moved to the proper area to aid you more .good luck

 

P0113 IAT voltage too high

Next step is measure voltage at the pin on the PCM.