Just an update on this. I ordered a new PDM and replaced it last night. Car is charging again! It's not terribly difficult with a few 10 mm and 13 mm wrenches. Bolts are mostly easy to access, but will require the removal of windshield wipers and upper cowling. Didn't follow the exact workshop manual instructions and disconnected the harnesses in place vs removing everything and opening the case outside of the car. The case is glued shut, so a small crowbar goes a long way. When closing the new case you will need some kind of glue - I used silicone sealant, but I am sure there is some kind of official glue/sealant. A full 'official' list of parts would be: PDM (look up the exact number on the right side decal), Nissan logo (can be re-used from old cover), safety decal and glue/sealant. As always, disconnect the battery or you will die!
Thanks for all the help!