The network between the powertrain and control unit for chassis system is called F-CAN and it employs high speed CAN with communication rate at 500 kbps.
The data link connector (DLC) is separated from F-CAN bus and connected to the CAN gateway as DIAG-CAN.

The F-CAN detects the differential voltage generated between two communication wires (F-CAN H and F-CAN L) and uses it as a signal level. This is a digital signal that indicates "1" when no differential voltage is found and "0" when differential voltage is found.