I would suspect the grounds to the dash more than the PCM. Chrysler loves to stuff multiple wires into a single connector and if one starts to fail then things get interesting. In your case the cluster and multi-function switch grounds are shared at ground 212 on the right hand side of the dash. However knowing Chrysler I would check the grounds at both ends of the dash, they will be up behind the trim panel at the ends on each side. They will be easy to find as they will be at least 5 wires stuffed into a connector screwed to the steel A-Pillar. I normally will remove the single screw, then cut the connector off, get new ring terminals. Take 2 or three wires, clean them and twist them together, then crimp them into a new terminal. Next step is to drill new holes in a line into the A pillar, scuff the area so it is clean and attach the new terminals with new screws. Once done I generally test everything, if it's all good I spray the new area with a coat or two of clear paint, just to slow corrosion.
There are a number of these ground points that cause similar issues on this make.
Saturday, November 9th, 2019 AT 3:50 AM