Electric inside locks for car doors do not work on 2000 Honda Civic

What could it be? Where to go? How much might this cost?

Asked by for the 2000 Honda Civic
Inspection of your Electrical system for doors locks need to be performed for a blown fuse, Bad Relay, Bad Switch, Electrical wire damage. Would advise to take vehicle to your local Repair Shop for Inspection and Estimate. The use of Special tools may be required.