DTC U1000: Can Communication Line (A/T): Description
WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
CAN 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 and 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.