DTC U1000: Can Comm Circuit: 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 two 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 Signal Chart. Refer to HOW TO USE CAN COMMUNICATION SIGNAL CHART .