removed that door....

and all wires look OK
hi,
I am new to a 2013 model - sold my 03 S60 - when locking a car with a remote, can't hear any confirmation ( and I should ) , red alarm lamp blinking but the car is not locked! No messages what is wrong, all doors, trunk, hood closed, tried resetting car settings, programmed everything again and still nothing changed. Wow - I just found the passenger door cannot be locked, but I still can lock and unlock other doors from the passenger side, I thought the wire must have been broken inside the harness going to that door..but all wires are OK
thanks for any help