Test B: One Door Lock Inoperative
WARNING: This page is about a different car, the 1997 Mercury Tracer and 1997 Ford Escort. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect inoperative door lock actuator. Measure voltage between inoperative door lock actuator harness connector terminals while pressing "L" and "U" buttons on door lock switch. Voltage in both positions should be greater than 10 volts. If voltage is greater than 10 volts in both switch positions, replace door lock actuator. If voltage is less than 10 volts, repair open in suspect wire between door lock actuator and door lock relay. See WIRING DIAGRAM .