Principles of Operation: Notes

WARNING: This page is about a different car, the 2002 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The front electronic module (FEM), rear electronic module (REM), & driver door module (DDM) must all be reconfigured before installing a new module. See MODULE CONFIGURATION .

The vehicle's electronic functions are divided into zones. The FEM controls the front portion of the vehicle & the REM controls the rear portion of the vehicle. These systems rely heavily on the standard corporate protocol (SCP) communication network in order to transmit & receive signals. As a technician, it is very important to understamd:

Where the input (command) originates from.
All information (messages) necessary in order for a feature to operate.
Which module(s) receive(s) the input or command message.
Whether the module which received the input (message) controls the output of the feature, or whether it outputs a message over the SCP communication network to another module.
Which module controls the output of the feature.