yeah definitely the first step getting the fuse box down behind the glove box.If it has blown then replace it and try the locking.If it blows straight away,keep replacing it and disconnecting one door loom at a time(dead easy,just twist the big black connector going into each door).
If you narrow it down to one door in particular,then it will probably be that the door latch motor has a ground to earth and is blowing the fuse.
Give it a try...Gary
Gary
July 2006