Pinpoint Test E: DTC B1681 - PATS Transceiver Module Signal Is Not Received: Notes
WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
Refer to SYSTEM WIRING DIAGRAMS , Passive Anti-Theft System for schematic and connector information.