I recently bought an 02 pt cruiser. All other parts of locking system work, even the fob. I have swapped out the switch, even tested new switch on drivers door and it was good. There is a black/yellow wire that lights up my 12v tester when I push the fob buttons so I think it is getting power. There is also a black wire(ground) and in the middle are a white and green wire connected to the same pin.

Any ideas are appreciated,
Thanks