Normal Operation
WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
The smart junction box (SJB) receives from the LH or RH door lock control switch a ground signal through circuit 1761 (PK/YE) to lock or through circuit 1762 (PK/LG) to unlock all the doors. The door lock control switches are grounded through circuit 1205 (BK).