Normal Operation
WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
Vehicle speed information is sent to the powertrain control module (PCM) from the anti-lock brake system (ABS) module. The instrument cluster receives the vehicle speed data from the PCM over the communication network.