LAN Connected Units

LAN CONNECTED UNITS




UNITS CONNECTED VIA HIGH SPEED LAN

NOTE:
- Terminal resistors built into the ECM and VDCCM &H/U stabilize traffic on the bus, and enables signals distinction from the voltage difference between the two bus lines (CAN_High and CAN_Low). These bus lines are called the main lines. Other units are connected in parallel to the main lines. These wires are called branch lines.
- If one bus line of the main lines becomes open, this is detected as an error and communication becomes no longer possible.
- If one bus line of a pair of branch lines becomes open, communication with the unit connected to the branch line becomes no longer possible, however, communication with other units remain intact. (The error will be displayed.)




UNITS CONNECTED VIA LOW SPEED LAN

NOTE:
- In low-speed CAN, the system still allows communication even if one of the twisted-pair cable wires becomes open. (Errors will be detected.)




- The high-speed and low-speed LANs described, and the IE_Bus, dedicated communication lines, and select monitor communication, etc. comprise the vehicle's data communication system.