CAN COMMUNICATION SYSTEM SYSTEM DIAGRAM


  1. OVERALL CAN BUS DIAGRAM (for LHD)


    1. w/o Network Gateway ECU

      The CAN communication system is composed of 2 buses.

      A01MY7EC05
      1

      ECM

      (for V Bus)

      		 2

      Main Body ECU (Multiplex Network Body ECU)

      (for V Bus and Sub Bus 1)
      3

      Air Conditioning Amplifier Assembly

      (for V Bus)

      		 4

      Telematics Transceiver

      (w/ Telematics Transceiver)

      (for V Bus)
      5

      Headlight Leveling ECU Assembly

      (for V Bus)

      		 6

      Certification ECU (Smart Key ECU Assembly)

      (for V Bus)
      7

      Power Steering ECU Assembly

      (for V Bus)

      		 8

      Steering Sensor

      (for V Bus)
      9

      Skid Control ECU (Brake Actuator Assembly)

      (for V Bus)

      		 10

      Option Connector (Bus Buffer ECU)

      (for V Bus)
      11

      Airbag Sensor Assembly

      (for V Bus)

      		 12

      Yaw Rate Sensor

      (for V Bus)
      13

      DLC3

      (for V Bus)

      		 14

      Radio Receiver Assembly

      (for V Bus)
      15

      Combination Meter Assembly

      (for V Bus)

      		 16

      Front Power Seat Switch LH

      (w/ Seat Position Memory System)

      (for Sub Bus 1)
      17

      Outer Mirror Control ECU Assembly (for Driver Side)

      (w/ Seat Position Memory System)

      (for Sub Bus 1)

      		 18

      Outer Mirror Control ECU Assembly (for Front Passenger Side)

      (w/ Seat Position Memory System)

      (for Sub Bus 1)
      19

      Multiplex Tilt and Telescopic ECU

      (w/ Power Tilt and Power Telescopic System)

      (for Sub Bus 1)

      		 20

      No. 1 CAN Junction Terminal

      (for Sub Bus 1)

      Tech Tips


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

      • Refer to the following bus wiring diagrams for details.

    2. w/ Network Gateway ECU

      The CAN communication system is composed of 5 buses.

      A01MYEEC03
      1

      ECM

      (for V Bus)

      		 2

      Network Gateway ECU

      (for V Bus and Sub Bus 2)
      3

      Main Body ECU (Multiplex Network Body ECU)

      (for V Bus and Sub Bus 1)

      		 4

      Skid Control ECU (Brake Actuator Assembly)

      (for V Bus and V3 Bus)
      5

      Telematics Transceiver

      (w/ Telematics Transceiver)

      (for V Bus)

      		 6

      Front Steering Control ECU

      (w/ VGRS System)

      (for V Bus and V3 Bus)
      7

      Air Conditioning Amplifier Assembly

      (for V Bus)

      		 8

      Steering Sensor

      (for V Bus)
      9

      Headlight Leveling ECU Assembly

      (for V Bus)

      		 10

      Certification ECU (Smart Key ECU Assembly)

      (for V Bus)
      11

      DLC3

      (for V Bus)

      		 12

      Airbag Sensor Assembly

      (for V Bus)
      13

      Yaw Rate Sensor

      (for V Bus)

      		 14

      Power Steering ECU Assembly

      (for V Bus and V3 Bus)
      15

      Radio Receiver Assembly

      (for V Bus)

      		 16

      Combination Meter Assembly

      (for V Bus)
      17

      Front Power Seat Switch LH

      (w/ Seat Position Memory System)

      (for Sub Bus 1)

      		 18

      Outer Mirror Control ECU Assembly (for Driver Side)

      (w/ Seat Position Memory System)

      (for Sub Bus 1)
      19

      Outer Mirror Control ECU Assembly (for Front Passenger Side)

      (w/ Seat Position Memory System)

      (for Sub Bus 1)

      		 20

      Multiplex Tilt and Telescopic ECU

      (w/ Power Tilt and Power Telescopic System)

      (for Sub Bus 1)
      21

      No. 1 CAN Junction Terminal

      (for Sub Bus 1)

      		 22

      Driving Support ECU Assembly

      (w/ Pre-crash Safety System)

      (for Sub Bus 2 and Sub Bus 13)
      23

      Absorber Control ECU

      (w/ AVS System)

      (for Sub Bus 2 and V3 Bus)

      		 24

      Option Connector (Bus Buffer ECU)

      (w/ Option Connector)

      (for Sub Bus 2)
      25

      Lane Departure Warning Camera

      (w/ Lane Departure Alert System)

      (for Sub Bus 2)

      		 26

      Clearance Warning ECU Assembly

      (w/ LEXUS Parking Assist-sensor System)

      (for Sub Bus 2)
      27

      Blind Spot Monitor Sensor LH

      (w/ Blind Spot Monitor System)

      (for Sub Bus 2)

      		 28

      No. 2 CAN Junction Terminal

      (for Sub Bus 2)
      29

      Millimeter Wave Radar Sensor Assembly

      (w/ Pre-crash Safety System)

      (for Sub Bus 13)

      		 - -

      Tech Tips


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

      • The network gateway ECU functions as a gateway between the V bus and sub bus 2.

      • The driving support ECU assembly functions as a gateway between the sub bus 2 and sub bus 13.

      • Refer to the following bus wiring diagrams for details.

  2. V BUS (for LHD)


    1. w/o Network gateway ECU

      A01MVBFE04
      A01MXXTE03
      A01MWTCE10

      Tech Tips

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

      Click here

    2. w/ Network gateway ECU

      A01MX24E04
      A01MYLSE03
      A01MWTCE11

      Tech Tips

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

      Click here

  3. SUB BUS 1 (for LHD)

    A01MXDSE04

  4. SUB BUS 2 (for LHD)

    A01MYQ4E02
    A01MYUBE05

  5. SUB BUS 13 (for LHD)

    A01MXPAE06

  6. V3 Bus (LHD)

    A01MUA9E04

  7. OVERALL CAN BUS DIAGRAM (for RHD)


    1. w/o Network Gateway ECU

      The CAN communication system is composed of 2 buses.

      A01MYWSC01
      1

      ECM

      (for V Bus)

      		 2

      Main Body ECU (Multiplex Network Body ECU)

      (for V Bus and Sub Bus 1)
      3

      Air Conditioning Amplifier Assembly

      (for V Bus)

      		 4

      Headlight Leveling ECU Assembly

      (for V Bus)
      5

      Certification ECU (Smart Key ECU Assembly)

      (for V Bus)

      		 6

      Power Steering ECU Assembly

      (for V Bus)
      7

      Steering Sensor

      (for V Bus)

      		 8

      Skid Control ECU (Brake Actuator Assembly)

      (for V Bus)
      9

      Airbag Sensor Assembly

      (for V Bus)

      		 10

      Yaw Rate Sensor

      (for V Bus)
      11

      Option Connecter (Bus Buffer ECU)

      (for V Bus)

      		 12

      Radio Receiver Assembly

      (for V Bus)
      13

      DLC3

      (for V Bus)

      		 14

      Combination Meter Assembly

      (for V Bus)
      15

      Outer Mirror Control ECU Assembly (for Driver Side)

      (w/ Seat Position Memory System)

      (for Sub Bus 1)

      		 16

      Outer Mirror Control ECU Assembly (for Front Passenger Side)

      (w/ Seat Position Memory System)

      (for Sub Bus 1)
      17

      Multiplex Tilt and Telescopic ECU

      (w/ Power Tilt and Power Telescopic System)

      (for Sub Bus 1)

      		 18

      Front Power Seat Switch LH

      (w/ Seat Position Memory System)

      (for Sub Bus 1)
      19

      No. 1 CAN Junction Terminal

      (for Sub Bus 1)

      		 - -

      Tech Tips


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

      • Refer to the following bus wiring diagrams for details.

    2. w/ Network Gateway ECU

      The CAN communication system is composed of 5 buses.

      A01MU7FC02
      1

      ECM

      (for V Bus)

      		 2

      Network Gateway ECU

      (for V Bus and Sub Bus 2)
      3

      Main Body ECU (Multiplex Network Body ECU)

      (for V Bus and Sub Bus 1)

      		 4

      Skid Control ECU (Brake Actuator Assembly)

      (for V Bus and V3 Bus)
      5

      Front steering Control ECU

      (w/ VGRS System)

      (for V Bus and V3 Bus)

      		 6

      Air Conditioning Amplifier Assembly

      (for V Bus)
      7

      Steering Sensor

      (for V Bus)

      		 8

      Headlight Leveling ECU Assembly

      (for V Bus)
      9

      Certification ECU (Smart Key ECU Assembly)

      (for V Bus)

      		 10

      DLC3

      (for V Bus)
      11

      Airbag Sensor Assembly

      (for V Bus)

      		 12

      Yaw Rate Sensor

      (for V Bus)
      13

      Power Steering ECU Assembly

      (for V Bus and V3 Bus)

      		 14

      Radio Receiver Assembly

      (for V Bus)
      15

      Combination Meter Assembly

      (for V Bus)

      		 16

      Front Power Seat Switch LH

      (w/ Seat Position Memory System)

      (for Sub Bus 1)
      17

      Outer Mirror Control ECU Assembly (for Driver Side)

      (w/ Seat Position Memory System)

      (for Sub Bus 1)

      		 18

      Outer Mirror Control ECU Assembly (for Front Passenger Side)

      (w/ Seat Position Memory System)

      (for Sub Bus 1)
      19

      Multiplex Tilt and Telescopic ECU

      (w/ Power Tilt and Power Telescopic System)

      (for Sub Bus 1)

      		 20

      No. 1 CAN Junction Terminal

      (for Sub Bus 1)
      21

      Driving Support ECU Assembly

      (w/ Pre-crash Safety System)

      (for Sub Bus 2 and Sub Bus 13)

      		 22

      Lane Departure Warning Camera

      (w/ Lane Departure Alert System)

      (for Sub Bus 2)
      23

      Absorber Control ECU

      (w/ AVS System)

      (for Sub Bus 2 and V3 Bus)

      		 24

      Blind Spot Monitor Sensor LH

      (w/ Blind Spot Monitor System)

      (for Sub Bus 2)
      25

      Clearance Warning ECU Assembly

      (w/ LEXUS Parking Assist-sensor System)

      (for Sub Bus 2)

      		 26

      No. 2 CAN Junction Terminal

      (for Sub Bus 2)
      27

      Millimeter Wave Radar Sensor Assembly

      (w/ Pre-crash Safety System)

      (for Sub Bus 13)

      		 - -

      Tech Tips


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

      • The network gateway ECU functions as a gateway between the V bus and sub bus 2.

      • The driving support ECU assembly functions as a gateway between the sub bus 2 and sub bus 13.

      • Refer to the following bus wiring diagrams for details.

  8. V BUS (for RHD)


    1. w/o Network gateway ECU

      A01MWXWE01
      A01MU8LE02
      A01MWSRE03

      Tech Tips

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

      Click here

    2. w/ Network gateway ECU

      A01MXD7E02
      A01MVJBE02
      A01MWSRE04

      Tech Tips

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

      Click here

  9. SUB BUS 1 (for RHD)

    A01MYJRE06

  10. SUB BUS 2 (for RHD)

    A01MUHZE02
    A01MVMSE02

  11. SUB BUS 13 (for RHD)

    A01MXPAE07

  12. V3 Bus (RHD)

    A01MYQKE02