Normal Operation
WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The smart junction box (SJB) receives lock/unlock commands from the RKE transmitter located on the integrated key. The SJB then arms/disarms the perimeter alarm system.