Principles of Operation: Notes

The High Speed Controller Area Network (HS-CAN) operates at a maximum data transfer speed of 500 Kbps and is designed for real time powertrain information transfer and control. Modules on the HS-CAN communicate using bussed messages. The HS-CAN uses an unshielded twisted pair cable, data bus (+) and data bus (-) circuits. In addition to scan tool communication, the HS-CAN allows sharing of information between all modules on the network.

The Medium Speed Controller Area Network (MS-CAN) operates at a maximum data transfer speed of 125 Kbps for bus messages and is designed for general information transfer. Modules on the MS-CAN communicate using bussed messages. The MS-CAN uses an unshielded twisted pair cable, data bus (+) and data bus (-) circuits. In addition to scan tool communication, the MS-CAN allows sharing of information between all modules on the network.

The Infotainment Controller Area Network (I-CAN) operates at a maximum data transfer speed of 500 Kbps and is designed for real time audio and multimedia information transfer and control. Modules on the I-CAN communicate using bussed messages. The I-CAN uses an unshielded twisted pair cable, data bus (+) and data bus (-) circuits. The I-CAN allows sharing of information between all modules on the network. The I-CAN is connected to the Data Link Connector (DLC), but the I-CAN modules communicate with the scan tool over the HS-CAN. The Instrument Panel Cluster (IPC) is used as a gateway module for the messages to transfer between the scan tool and the modules on the I-CAN.