System Diagram [08/2016 - 11/2017]

1. The CAN communication system is composed of 5 buses.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   1	Combination Meter Assembly (for V Bus)	2	Main Body ECU (Multiplex Network Body ECU) (for V Bus and Sub Bus 1)
   3	Network Gateway ECU (for V Bus and Sub Bus 2)	4	Air Conditioning Amplifier Assembly (for V Bus)
   5	DLC3 (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 and V3 Bus)
   9	Yaw Rate Sensor (for V Bus)	10	Spoiler Control ECU Assembly (for V Bus)
   11	Airbag ECU Assembly (for V Bus)	12	Certification ECU (Smart Key ECU Assembly) (for V Bus)
   13	Radio Receiver Assembly (for V Bus)	14	Torque Vectoring Differential ECU Assembly (w/ Torque Vectoring Differential System) (for V Bus and V3 Bus)
   15	Stereo Component Equalizer Assembly (w/ ASC System) (for V Bus)	16	ECM (for V Bus and V3 Bus)
   17	Multiplex Tilt and Telescopic ECU (for Sub Bus 1)	18	Outer Mirror Control ECU Assembly (for Driver Side) (w/ Seat Position Memory System) (for Sub Bus 1)
   19	Position Control ECU and Switch Assembly LH (w/ Seat Position Memory System) (for Sub Bus 1)	20	Headlight Light Control ECU Sub-assembly LH (for Triple Beam Headlight) (for Sub Bus 1)
   21	Rear Television Camera Assembly (for Sub Bus 1)	22	Position Control ECU and Switch Assembly RH (w/ Seat Position Memory System) (for Sub Bus 1)
   23	Outer Mirror Control ECU Assembly (for Front Passenger Side) (w/ Seat Position Memory System) (for Sub Bus 1)	24	No. 1 CAN Junction Terminal (for Sub Bus 1)
   25	Driving Support ECU Assembly (w/ Pre-collision System) (for Sub Bus 2 and Sub Bus 13)	26	Telematics Transceiver (for Lexus Enform Remote Compatible Type) (for Sub Bus 2)
   27	Clearance Warning ECU Assembly (w/ Intuitive Parking Assist System) (for Sub Bus 2)	28	Option Connector (Bus Buffer ECU) (for Sub Bus 2)
   29	Headlight Leveling ECU Assembly (for Single Beam Headlight) (for Sub Bus 2)	30	Lane Departure Warning Camera (w/ Lane Departure Alert System) (for Sub Bus 2)
   31	Blind Spot Monitor Sensor LH (w/ Blind Spot Monitor System) (for Sub Bus 2)	32	Absorber Control ECU (for Sub Bus 2)
   33	No. 2 CAN Junction Terminal (for Sub Bus 2)	34	Roll Rate and Vertical Acceleration Sensor (V3 Bus)
   35	Millimeter Wave Radar Sensor Assembly (w/ Pre-collision System) (for Sub Bus 13)	-	-

   HINT: 

   • 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.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT: 

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

Refer to SYSTEM DIAGRAM [09/2014 - 01/2023]