2007~2015 CX-9 Battery light on after new Alternator

[TheDude88]

Hello. I recently replaced my alternator on my 2014 CX9 and the battery light comes back on a few minutes after starting. Also installed new belt and battery. It sometimes will go off but always comes back. I checked the blade fuses and all ok. Voltage at battery while running is 14.7v. Initially I got P0882 TCM power output low but cleared it and now no new codes but light still on.

 

[N7turbo]

Have you checked the output with a multimeter?

 

[TheDude88]

Have you checked the output with a multimeter?

14.7 while running

 

[TheDude88]

Initially I got P0882 TCM power output low but cleared it and now no new codes but light still on. Any next steps?

 

[TheDude88]

Initially I got P0882 TCM power output low but cleared it and now no new codes but light still on. Any next steps?

Thank you

 

[2007 cx9]

I have a similar issue with my 2007 Mazda CX-9. Did anyone determine what the issue was?

At first mine threw a code like - not enough power save or support, but I think one of the alternator wires was loose or was connected wrong, as my connector broke when I took it off. I got a new pigtail for the alternator and reconnected and that code is no longer there.