Hello and welcome to just answer Dodge. The code that is causing the overcharging is code 41. Now if you have disconnected the alternator field wires, and the PCM (engine computer) connector and checked for shorts to ground in the alternator field circuit then the PCM is shorted internally and will need to be replaced. There are only 3 things that can cause this 1 a shorted field inside the alternator (but you changed that) the wiring, and the PCM.
Hope this information helps, and let me know if you need more assistance with this.
Sounds good. If you or someone you know has and can use an ohmmeter, then check the field circuit that way before opening up the harness. Simply disconnect the field wires at the alternator, disconnect the PCM and remove the ASD relay. Then check for continuity at the field wire going to the pcm (not sure what color that one is) and to ground. There should be NO continuity. If there is not, then the wiring is good and you should suspect the PCM as the problem.
Thanks for the accept, and let me know how it goes,
That is probably the problem! Glad you found this and let me know if that fixes it.
Ok, then let's try this next. Disconnect the PCM connector and start the engine. If it is still overcharging, with the PCM disconnected then the problem is the PCM. Let me know how that goes,
Ok, let me know. Yes the PCM is on the firewall behind the air box.
Well it should not be charging at all with the PCM disconnected. This sounds like it is the PCM. If it was still overcharging with the PCM disconnected then the problem would be a short to ground in the field wire to the PCM. Normal charging should be 13.8 to 14.2 volts. Are you reading the voltage with a voltmeter or are you going by what the meter on the dash says? I recommend reading the voltage at the batterywith a good hand held digital voltmeter.
14.1 is perfect. Now is that with the PCM connected or disconnected?
By the way, thank you for the accept.
Thank you for the accept! If it still seems to overcharge with the PCM connected, then suspect a bad PCM.
You are very welcome!