Operation CHARM: Car repair manuals for everyone.

CAN Communication

CAN COMMUNICATION

System Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.




CAN Communication Unit

NOTE: Confirming the presence of the following items helps to identify CAN system type.




- Model with Intelligent Key system




- Model with rear active steer




- Model with automatic drive positioner

TYPE 1/TYPE 2/TYPE 3/TYPE 4

System Diagram

System Diagram:




- Type 1

System Diagram:




- Type 2

System Diagram:




- Type 3

System Diagram:




- Type 4

Input/Output Signal Chart Part 1:




Input/Output Signal Chart Part 2:




Input/output Signal Chart

TYPE 5/TYPE 6/TYPE 7/TYPE 8

System Diagram

System Diagram:




- Type 5

System Diagram:




- Type 6

System Diagram:




- Type 7

System Diagram:




- Type 8

Input/Output Signal Chart Part 1:




Input/Output Signal Chart Part 2:




Input/output Signal Chart