UBP Communications Network
WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The UBP communications network uses a single wire network circuit 693 (OG). The UBP communications network allows inter-module communications. The UBP communications network does not function if the wire is shorted to ground or voltage. If one of the modules on the UBP communications network loses voltage or shorts internally, communications to that module fail.