Pinpoint Test A: DTC B2103 - Antenna Not Connected: Notes
WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
Refer to appropriate SYSTEM WIRING DIAGRAMS article, Passive Anti-Theft System for schematic and connector information.