Power Lock Diagnostics: What Automotive Technicians Look For During Inspections
Modern cars now typically include power door locks, which provide security and ease. When these systems fail, though, it can be annoying and possibly threaten safety. Beginning with knowledge of the basic electrical circuit involved, automotive technicians use a methodical approach to diagnose power lock problems. This circuit typically consists of the door lock switch, door lock actuator motor, wire, relays, and control module. Technicians use wire diagrams to trace the circuit and identify potential failure points. The standard, simple solution for blown fuses is to start by checking the fuse that is attached to the power locks.
Examining the Door Lock Switch and Actuator
When looking at power lock problems, the main suspect is the door lock switch found in the driver's side door or ce...