Principles of Operation: Notes

The message center electronic functions use both hardwired, and controller area network (CAN) circuitry to transmit and receive information. As a technician, 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 that received the input (message) controls the output of the feature, or if it outputs a message over the CAN to another module.
• which module controls the output of the feature.

The message center provides the following features:

• Information displays
• Setup displays
• System check messages
• System warning messages

The message center information is selected through a set of 3 buttons:

• INFO
• SETUP
• RESET