Pinpoint Test E: DTC B1681 - PATS Transceiver Module Signal Is Not Received: Notes
WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Refer to SYSTEM WIRING DIAGRAMS - E350 SUPER DUTY , Passive Anti-Theft System for schematic and connector information.