Charging volts are not right. WARNING 17v is dangerous! Your R/R is faulty! This voltage can cook your battery and more importantly could destroy your ECM!
Are you sure your meter is accurate? 13.5v battery voltage engine off sounds high!
Unplug the three yellow stator connector from the R/R, do the ohmic checks for the stator, should have very low ohms between phases and virtual infinity resistance from any phase to Ground. Do the AC voltage checks engine running, and if they are ok your stator is good and you R/R is what's at fault.
Have you got the service manual? You can download it from this forum.