Principles of Operation: Notes
WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The message center electronic functions use both hardwired inputs and controller area network (CAN), and universal asynchronous receiver-transmitter (UART)-based protocol (UBP) communication networks to transmit and receive information. It is very important to understand:
- where the input (command) originates.
- all the information (messages) necessary in order for a feature to operate.
- which module(s) receive(s) the input or command message.
- if the module which received the input (message) controls the output of the feature, or if it outputs a message over the CAN or UBP circuits to another module.
- which module controls the output of the feature.
The message center provides the following features:
- information displays
- setup displays
- warning messages
- system check messages
The message center information can be selected through a set of 3 switches:
- INFO
- SETUP
- RESET