CAN COMMUNICATION SYSTEM GENERAL


  1. OUTLINE


    1. The Controller Area Network (CAN) uses 5 different CAN buses: CAN No. 1 bus, CAN No. 2 bus, power management bus and powertrain bus for high-speed communication (500 kbps) and CAN MS bus for medium-speed communication (250 kbps).

    2. The CAN has 2 terminating resistors which are necessary for accurate judgment of communication on the main bus.

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

      Bus Terminating Resistor Location
      CAN No. 1 Bus

      • ECM

      • Combination Meter Assembly
      CAN No. 2 Bus

      • Power Management Control ECU

      • No. 3 CAN Junction Connector
      Power Management Bus

      • Power Management Control ECU

      • ECM
      Powertrain Bus

      • TCM

      • ECM
      CAN MS Bus

      • Main Body ECU (Driver Side Junction Block Assembly)

      • No. 4 CAN Junction Connector

    4. The main body ECU (driver side junction block assembly) has a gateway function and is used to transmit data between the CAN No. 1 bus and the CAN MS bus.

    5. The power management control ECU has a gateway function and is used to transmit data between the power management bus, CAN No. 1 bus and CAN No. 2 bus.