Normal Operation
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
During each vehicle start sequence, the transceiver module reads the encoded ignition key identification code and sends the data to the powertrain control module (PCM). The PCM then compares this data with stored values to determine start enable.