You have a short somewhere in the system.
Power door locks fuse blowing.
Suggest starting w power lock solenoid and see if it is drawing too much current and blowing fuse.
This will be tedious but may id source of current draw.
Dead power door lock switch.
2002 dodge ram 1500 power door locks keep blowing fuse.
If the door lock relay has any.
Lights and horn flashes honk just no action on the locking mechanism i m at a complete loss i ve disconnected entire harness inside of passenger side door fuse still blows.
Jul 20 2009 dodge ram 1500 cars trucks.
To test disconnect all locks and switch then replace fuse if don t blow start with driver door and reconnect lock check fuse see if it blew if not reconnect switch active lock check fuse see if ok.
Remove door panel and route current flow through multimeter rated for 20a.
Slightly easier you could also inspect the wiring for a short very low resistance to ground and trace the short.
It s not rare for fuses to blow and when they do electrical current will stop running to the door lock actuator rendering the power door lock system useless.
Power door locks function intermittently one of the first symptoms of a possible problem with the door lock relay are door locks that function intermittently.
Power door locks are prone to failures due to electrical interruptions corrosion broken wires or blown fuses.
One door at a time so disconnect 3 keep changing the active one till you find which one isnt working then test its circuits ok cheers rob.
The power door lock switch is a relatively simple rocker switch.
Maybe one of the lock actuators or a switch.
Find out why a lack of any movement in door locks is most likely a result of a blown.