169002279 - E1050 CAN CONNECTION LINES - DESCRIPTION

Description

This vehicle is equipped with a CAN (Controller Area Network) system of electrical connections: it involves a software and hardware solution which is designed to manage the resources on the vehicle efficiently allowing:

  • the sharing of information between the various electronic units;
  • the intergration of several electronic units through one network;
  • a high network information exchange speed;
  • advantages in economic terms because there is a considerable reduction in the wiring/connectors inside the vehicle;
  • superior standards in terms of quality and reliability.
The advantage of using a CAN system stems from the fact that communication takes place between numerous control units and consequently the number of signals to be managed is very high.The system uses a low speed CAN serial network (B CAN) and a high speed network (C CAN) for communication between Nodes.
NODES are all the electrical/electronic devices and control units that contain a specific interface (NETWORK INTERFACE) that allow data, information and signals travelling via the CANs to be transmitted and received.
The B-CAN (low speed) network comprises 2 electrical wires, one White/Pink shown in the wiring diagram as the B CAN-A cable and one Black/Pink one shown in the wiring diagram as the B CAN-B cable.The transmission of information on this pair of wires takes place by means of 2 voltage levels, one High and one Low, associated with the B CAN-A cable and the B CAN-B cable respectively.The C-CAN (high speed) network comprises 2 electrical wires, one Green shown in the wiring diagram as the CAN-H cable and one Brown shown in the wiring diagram as the CAN-L cable.The transmission of information on this pair of wires takes place by means of 2 voltage levels, one High and one Low, associated with the C CAN-H cable and the C CAN-L cable respectively.Shared information for the dynamic control of the vehicle is transferred via the C CAN whilst the B CAN manages the standard bodywork functions.The gateway for communication between the C CAN and B CAN is located in the body computer node.For more details on the operating principle of the B CAN and C CAN networks, consult the DESCRIPTION and OPERATION section.    See descriptions 5505 INSTRUMENT/GAUGE ELECTRICAL CIRCUITS.