Principles of Operation: Notes

WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: A new front electronic module (FEM) or rear electronic module (REM) must be reconfigured before installing. REFER to MODULE CONFIGURATION .

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

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.