CAN COMMUNICATION SYSTEM(for LHD) SYSTEM DIAGRAM


  1. SYSTEM DIAGRAM


    1. Overall CAN Bus Diagram


      1. Control system CAN is composed of 5 buses.

        A01CRBDE03
        No. ECU/Sensor Name
        1 ECM
        2 Hybrid vehicle control ECU
        3 Main body ECU (multiplex network body ECU)
        4 Brake booster with master cylinder assembly (skid control ECU)
        5 Parking brake ECU assembly
        6 Power steering ECU assembly
        7 Air conditioning amplifier assembly
        8 Stereo component equalizer assembly*1
        9 Certification ECU (smart key ECU assembly)
        10 Spiral with sensor cable sub-assembly (steering angle sensor)
        11 DLC3
        12 Airbag ECU assembly
        13 Radio receiver assembly*2
        14 Telematics transceiver*12
        15 Bus buffer ECU
        16 Combination meter assembly
        17 Multiplex tilt and telescopic ECU*3
        18 Outer mirror control ECU assembly RH*4
        19 Outer mirror control ECU assembly LH*4
        20 Front power seat switch LH*4
        21 Headlight light control ECU sub-assembly LH
        22 Multiplex network door ECU*5
        23 No. 2 CAN junction terminal
        24 Driving support ECU assembly*6
        25 Clearance warning ECU assembly*7
        26 Parking assist ECU*8
        27 Lane departure warning camera*9
        28 Blind spot monitor sensor LH*10
        29 Absorber control ECU*11
        30 No. 1 CAN junction terminal
        31 Millimeter wave radar sensor assembly*6

        *1: w/ ASC System

        *2: w/ Navigation System or Audio and Visual System

        *3: for Power Tilt and Power Telescopic Steering Column

        *4: w/ Memory

        *5: w/ Power Back Door System

        *6: w/ Pre-crash Safety System

        *7: w/ LEXUS Parking Assist-sensor System

        *8: w/ Panoramic View Monitor System

        *9: w/ Lane Departure Alert System

        *10: w/ Blind Spot Monitor System

        *11: w/ Adaptive Variable Suspension System

        *12: w/ Emergency Call Switch

        Tech Tips


        • The main body ECU (multiplex network body ECU) functions as a gateway between the V bus and sub bus 1.

        • The hybrid vehicle control ECU functions as a gateway between the V bus and sub bus 11.

        • Refer to the following bus wiring diagrams for details.

    2. V Bus

      A01CNARE01
      A01CR5AE01
      A01CNZCE01

      Tech Tips

      The CAN communication system connects to other networks via ECUs that function as gateways.

      Click here

    3. Sub Bus 11

      A01CQ8DE02
      A01CRL5E01

    4. Sub Bus 1

      A01CQ49E01
      A01CNUHE03

      Tech Tips

      The CAN communication system connects to other networks via ECUs that function as gateways.

      Click here

    5. Sub Bus 15

      A01CPXJE03

    6. Local Bus (w/ Pre-crash Safety System)

      A01COYYE03