CAN COMMUNICATION SYSTEM


  1. OUTLINE


    1. The Controller Area Network (CAN) is a serial data communication network for real time application. It is a multiplex communication network equipped in a vehicle, and has communication speeds of 500 kbps (HS-CAN) and 250 kbps (MS-CAN), and the ability to detect malfunctions.

    2. The HS-CAN consists of the V Bus, Bus 2, Bus 3, Bus 4, Bus 5 and Local Bus.

    3. The MS-CAN consists of the Sub Bus 1.

    4. The communication wire used is a twisted-pair wire. The bus line has a high line (2.5 V to 3.5 V of voltage is applied) and a low line (1.5 V to 2.5 V of voltage is applied).

      Speed Communication Bus Terminating Resistor Location Gateway Function Gateway Destination
      High-speed (HS-CAN) V Bus Network Gateway ECU Network Gateway ECU

      • Bus 2

      • Bus 3

      • Bus 4

      • Bus 5
      Bus 2

      • ECM

      • Combination Meter Assembly

      		 Main Body ECU (Multiplex Network Body ECU) Sub Bus 1
      Network Gateway ECU

      • V Bus

      • Bus 3

      • Bus 4

      • Bus 5
      Bus 3 Network Gateway ECU Network Gateway ECU

      • V Bus

      • Bus 2

      • Bus 5
      Bus 4

      • ECM

      • No. 2 CAN Junction Terminal

      		 Network Gateway ECU

      • V Bus

      • Bus 2

      • Bus 3

      • Bus 5
      Bus 5 Network Gateway ECU Network Gateway ECU

      • V Bus

      • Bus 2

      • Bus 3

      • Bus 4
      Middle-speed (MS-CAN) Sub Bus 1

      • Main Body ECU (Multiplex Network Body ECU)

      • No. 1 CAN Junction Terminal

      		 Main Body ECU (Multiplex Network Body ECU) Bus 2