Trip A/B And Odometer Displays
WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
The vehicle speed signal (VSS) from all four wheels is hardwired directly to the ABS/TC/IVD. The speed status is then sent to the instrument cluster by the ABS/TC/IVD over the SCP communication network to establish a rolling count.