Diagnosis And Testing - Power Locks
WARNING: This page is about a different car, the 2004 Dodge Intrepid, 2004 Chrysler Intrepid, 2004 Chrysler Concorde, and 2004 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
The most reliable, efficient, and accurate means to diagnose the power lock system requires the use of a DRBIII(R) scan tool and the proper Diagnostic Procedures.