Communications Network: Overview
WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
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.
NOTE:
Vehicles equipped with a mid-level or high-level IPC have an Infotainment Controller Area Network (I-CAN) that is connected to the Data Link Connector (DLC). However, modules on the I-CAN do not communicate directly with the diagnostic scan tool. The IPC operates as the gateway for modules on the I-CAN to communicate with the diagnostic scan tool over the HS-CAN.
The vehicle has 3 module communication networks connected to the DLC, located under the instrument panel. The communication networks are:
- High Speed Controller Area Network(HS-CAN)
- Medium Speed Controller Area Network(MS-CAN)
- Infotainment Controller Area Network(I-CAN)