My wife has a 2016 Town and Country mini van that the radiator fan stopped working. With all the electronics in there, I wasn't sure where to look for the problem, so I went on Youtube and searched for "Fan not working" type videos on Chrysler and Dodge mini vans. There was a bunch of videos that showed me how to jump the relay to test the fan, which worked great, then where the sensors are that control the van. Probably the hardest part was figuring out how to disconcert the wires from the sensors!!! But I found videos on that too. Fortunately I found the parts in town and was able to get it working again for about $80 thanks to Youtube.
I don't have any one recommendation, I just wanted to mention how useful Youtube can be when trying to figure out something that you have never done before, or know nothing about.