CAN COMMUNICATION SYSTEM(w/ Central Gateway ECU) SYSTEM DIAGRAM


  1. OVERALL CAN BUS DIAGRAM (for LHD)


    1. The CAN communication system is composed of 6 buses.

      A01W332E03
      Text in Illustration
      No. ECU/Sensor Name No. ECU/Sensor Name
      1

      Central Gateway ECU

      (for V Bus, Bus 5, Bus 2 and Bus 3)

      		 2

      DLC3

      (for V Bus)
      3

      Combination Meter Assembly

      (for Bus 2)

      		 4

      ECM

      (for Bus 2)
      5

      Airbag Sensor Assembly

      (for Bus 2)

      		 6

      Steering Sensor

      (for Bus 2)
      7

      Brake Actuator Assembly (Skid Control ECU)

      (for Bus 2)

      		 8

      Certification ECU (Smart Key ECU Assembly)

      (for Bus 2)
      9

      Air Conditioning Amplifier Assembly

      (for Bus 2)

      		 10

      Clearance Warning ECU Assembly

      (for Bus 2)
      11

      Power Steering ECU with Motor Assembly

      (for Bus 2)

      		 12

      Headlight Leveling ECU (Headlight Swivel ECU Assembly)

      (for Bus 2)
      13

      Engine Stop and Start ECU

      (for 6AR- FSE)

      (for Bus 2)

      		 14

      Main Body ECU (Multiplex Network Body ECU)

      (for Bus 2 and Sub Bus 1)
      15

      Radio Receiver Assembly

      (for Bus 3)

      		 16

      Telematics Transceiver

      (w/ Telematics Transceiver)

      (for Bus 3)
      17

      No. 1 CAN Junction Terminal

      (for Sub Bus 1)

      		 18

      Front Power Seat Switch LH

      (w/ Seat Position Memory System)

      (for Sub Bus 1)
      19

      Front Power Seat Switch RH

      (w/ Seat Position Memory System)

      (for Sub Bus 1)

      		 20

      Multiplex Tilt and Telescopic ECU

      (w/ Power Tilt and Power Telescopic Steering Column System)

      (for Sub Bus 1)
      21

      Luggage Closer Motor Assembly

      (w/ Power Trunk Lid System)

      (for Sub Bus 1)

      		 22

      Outer Mirror Control ECU Assembly (for Driver Side)

      (w/ Reverse Shift-linked Mirror)

      (for Sub Bus 1)
      23

      Outer Mirror Control ECU Assembly (for Front Passenger Side)

      (w/ Reverse Shift-linked Mirror)

      (for Sub Bus 1)

      		 24

      Rear Television Camera Assembly

      (w/ Parking Assist Monitor System without Parallel Parking Assist Function)

      (for Sub Bus 1)
      25

      No. 2 CAN Junction Terminal

      (for Bus 5)

      		 26

      Blind Spot Monitor Sensor LH

      (w/ Blind Spot Monitor System)

      (for Bus 5)
      27

      Driving Support ECU Assembly

      (w/ Lexus Safety System +)

      (for Bus 5 and Sub Bus 13)

      		 28

      Millimeter Wave Radar Sensor Assembly

      (w/ Lexus Safety System +)

      (for Bus 5 and Sub Bus 13)
      29

      Forward Recognition Camera

      (w/ Lexus Safety System +)

      (for Bus 5 and Sub Bus 13)

      		 - -

    Tech Tips


    • The main body ECU (multiplex network body ECU) functions as a gateway between the bus 2 and sub bus 1.

    • The central gateway ECU functions as a gateway between the V bus, bus 5, bus 2 and bus 3.

    • The driving support ECU assembly functions as a gateway between the bus 5 and sub bus 13.

    • Refer to the following bus wiring diagrams for details.

  2. V BUS (for LHD)

    A01W23HE06

  3. BUS 5 (for LHD)

    A01VZITE05

  4. BUS 2 (for LHD)

    A01VZEUE02
    A01W4FYE07

    Tech Tips

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

  5. BUS 3 (for LHD)

    A01W5LXE04

  6. SUB BUS 1 (for LHD)

    A01W3TYE10
    A01W4KCE07

  7. SUB BUS 13 (for LHD with Lexus Safety System +)

    A01W2AUE07

  8. OVERALL CAN BUS DIAGRAM (for RHD)


    1. The CAN communication system is composed of 6 buses.

      A01W2PHE03
      Text in Illustration
      No. ECU/Sensor Name No. ECU/Sensor Name
      1

      Central Gateway ECU

      (for V Bus, Bus 5, Bus 2 and Bus 3)

      		 2

      DLC3

      (for V Bus)
      3

      Combination Meter Assembly

      (for Bus 2)

      		 4

      ECM

      (for Bus 2)
      5

      Airbag Sensor Assembly

      (for Bus 2)

      		 6

      Steering Sensor

      (for Bus 2)
      7

      Brake Actuator Assembly (Skid Control ECU)

      (for Bus 2)

      		 8

      Certification ECU (Smart Key ECU Assembly)

      (for Bus 2)
      9

      Air Conditioning Amplifier Assembly

      (for Bus 2)

      		 10

      Clearance Warning ECU Assembly

      (for Bus 2)
      11

      Power Steering ECU with Motor Assembly

      (for Bus 2)

      		 12

      Headlight Leveling ECU (Headlight Swivel ECU Assembly)

      (for Bus 2)
      13

      Main Body ECU (Multiplex Network Body ECU)

      (for Bus 2 and Sub Bus 1)

      		 14

      Radio Receiver Assembly

      (for Bus 3)
      15

      No. 1 CAN Junction Terminal

      (for Sub Bus 1)

      		 16

      Front Power Seat Switch LH

      (w/ Seat Position Memory System (for Front Passenger Side))

      (for Sub Bus 1)
      17

      Front Power Seat Switch RH

      (for Sub Bus 1)

      		 18

      Multiplex Tilt and Telescopic ECU

      (w/ Power Tilt and Power Telescopic Steering Column System)

      (for Sub Bus 1)
      19

      Luggage Closer Motor Assembly

      (w/ Power Trunk Lid System)

      (for Sub Bus 1)

      		 20

      Outer Mirror Control ECU Assembly (for Driver Side)

      (for Sub Bus 1)
      21

      Outer Mirror Control ECU Assembly (for Front Passenger Side)

      (for Sub Bus 1)

      		 22

      Rear Television Camera Assembly

      (w/ Parking Assist Monitor System without Parallel Parking Assist Function)

      (for Sub Bus 1)
      23

      Driving Support ECU Assembly

      (w/ Lexus Safety System +)

      (for Bus 5 and Sub Bus 13)

      		 24

      No. 2 CAN Junction Terminal

      (for Bus 5)
      25

      Blind Spot Monitor Sensor LH

      (w/ Blind Spot Monitor System)

      (for Bus 5)

      		 26

      Millimeter Wave Radar Sensor Assembly

      (w/ Lexus Safety System +)

      (for Bus 5 and Sub Bus 13)
      27

      Forward Recognition Camera

      (w/ Lexus Safety System +)

      (for Bus 5 and Sub Bus 13)

      		 - -

    Tech Tips


    • The main body ECU (multiplex network body ECU) functions as a gateway between the bus 2 and sub bus 1.

    • The central gateway ECU functions as a gateway between the V bus, bus 5, bus 2 and bus 3.

    • The driving support ECU assembly functions as a gateway between the bus 5 and sub bus 13.

    • Refer to the following bus wiring diagrams for details.

  9. V BUS (for RHD)

    A01W23HE07

  10. BUS 5 (for RHD)

    A01VZITE06

  11. BUS 2 (for RHD)

    A01W47JE04
    A01W4JGE02

    Tech Tips

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

  12. BUS 3 (for RHD)

    A01W4QVE06

  13. SUB BUS 1 (for RHD)

    A01W3GKE06
    A01W2LME03

  14. SUB BUS 13 (for RHD with Lexus Safety System +)

    A01W2AUE08