Information Bus: Description and Operation

CONTROL AREA NETWORK (CAN) SYSTEM OUTLINE
The vehicle communication network utilizes CAN communications. CAN is used for many modules to communicate with each other on a common network. CAN in-vehicle networking is a method for transferring data among distributed electronic modules via a serial data bus.

The vehicle has 2 module communication networks: Medium speed (MS) CAN and High speed (HS) CAN. Both networks are connected to the Data Link Connector (DLC). This makes diagnosis and testing of these systems easier by allowing one scan tool to be able to diagnose and control any module on the networks from one connector.

CAN SYSTEM STRUCTURAL VIEW

CAN System Structural View:

CAN SYSTEM WIRING DIAGRAM

CAN System Wiring Diagram:

INSTRUMENT CLUSTER
The instrument cluster is the gateway module, translating HS-CAN to MS-CAN and vice versa. It receives and sends information to other modules over both the high speed CAN and the medium speed CAN that may not necessarily be used for instrument cluster gauge or indicator outputs. This enables network communication between modules that do not communicate using the same network. The instrument cluster is the only module with this ability.