CAN COMMUNICATION SYSTEM


  1. OUTLINE


    1. The Controller Area Network (CAN) uses 2 different types of CAN buses:


      • The CAN V1 bus, V2 bus, power management bus and the local bus are HS-CAN buses that operate at 500 kbps.

      • The CAN MS bus is an MS-CAN bus that operates at 250 kbps.

    2. Each CAN bus has 2 terminating resistors which are necessary for accurate judgment of communication.

    3. The terminating resistors for each bus are located as shown in the following table.

      Speed Communication Bus Terminating Resistor Location
      High-speed (HS-CAN) CAN V1 Bus

      • ECM

      • Combination Meter Assembly
      CAN V2 Bus

      • Junction Connector

      • Power Management Control ECU
      CAN Power Management Bus

      • ECM

      • Power Management Control ECU
      CAN Local Bus

      • Driving Support ECU Assembly

      • Millimeter Wave Radar Sensor
      Middle-speed (MS-CAN) CAN MS Bus

      • Junction Connector

      • Main Body ECU (Multiplex Network Body ECU)

    4. The power management control ECU has a gateway function and is used to transmit data between the CAN V1 bus, CAN V2 bus and CAN power management bus.

    5. The main body ECU (multiplex network body ECU) has a gateway function and is used to transmit data between the CAN V1 bus and CAN MS bus.

    6. The driving support ECU assembly has a gateway function and is used to transmit data between the CAN V2 bus and CAN local bus.

  2. MAJOR DIFFERENCE


    1. The new models have been modified from the previous models as shown below:


      1. Due to the adoption of a new model navigation system, the CAN bus, to which the DCM is connected, has been changed.