Hi, Have a problem with the passenger door lock on my 320ci. I have changed the actuator(used part)but have the same problem. If I connect a test meter to terminal one and press the lock button or use the remote I get a 12v spike and the lock activates, but if I connect the meter to terminal two and try to unlock with the button or the remote I get no 12v spike, so I guess that means the GM5 needs attention. What are your thoughts.