Information Bus: Description and Operation: Overview

Module Communications Network

Overview

Communication Network

Multiplexing is a method of sending 2 or more signals simultaneously over a single circuit. Multiplexing allows 2 or more electronic modules (nodes) to communicate over a twisted wire pair [data (+) and data (-)] network. The information or messages that can be communicated on these wires consists of commands, status or data. The advantage of using multiplexing is to reduce the weight of the vehicle by reducing the number of redundant components and electrical wiring.

The vehicle has 3 module communication networks connected to the DLC (Data Link Connector), located under the instrument panel. The communication networks are:
- HS-CAN (High Speed Controller Area Network)
- MS-CAN (Medium Speed Controller Area Network)
- I-CAN (Infotainment Controller Area Network)
NOTE:The I-CAN (Infotainment Controller Area Network) goes to the DLC (Data Link Connector), but the I-CAN (Infotainment Controller Area Network) modules communicate with the scan tool over the MS-CAN (Medium Speed Controller Area Network). The IPC (Instrument Panel Cluster) is used as a gateway module for the messages to transfer between the scan tool and the modules on the I-CAN (Infotainment Controller Area Network).