Passenger power sliding door

The passenger sliding door will lock and unlock, but will not open. The motor sounds like it is working, but the door goes nowhere. If I pull the handle to pop it out manually, it will then power the rest of the way open and will close automatically just fine.

I replaced the actuator a year ago and it worked good until a week ago when it started not closing all the way at first (would almost close, then bounce back open) and then not opening on its own at all. Today I took the wiring out of the "snake" to inspect it - finding no breaks.

Is it the latch not popping the door open or a motor? I have seen something about a pin, but that seems to be on the drivers' door.