Following is a copy of a post I put up on 10-11-2010:
For years I put up with the problem of the doors locking/unlocking when the remote button was pressed but fixed it recently by replacing the driver's door lock actuator. This was a non-genuine unit (a Dynamco) costing about $35. A new genuine unit was priced at about $200. The only issue I had was sorting out the 5 coloured wires and matching them to the wires left on the car when I cut off the socket that plugged into the original (faulty) actuator. If you buy a Dynamco unit the wires are Black - Common, White - Open, Brown - Closed, Green - Power, Blue - Power. The wires on the car are: Black - Common, Red/Brown - Open, Orange/Brown - Closed, Black/Yellow - Power, Black/Red - Power. (Where I state e.g. 'Black/Yellow' this is the one wire with a trace - and I can't remember which is the trace). You simply match the wires from the new actuator to those wires left in the door. The only problems I had was with the power wires which I had the wrong way around on first try and I needed to cut away the lever on the door lock as it was too wide to engage in the hole provide on the new actuator. Grinding it away with a dremel did the trick.