System Diagram

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

SYSTEM DIAGRAM REFERENCE CHART

Item		Details
Connected ECUs*1		21
Communication Frame*2		100
Gateway Function	BEAN x Diagnosis	Network Gateway ECU
Gateway Function	BEAN x AVC-LAN Network Gateway ECU	Network Gateway ECU
ECU in charge of vehicle information of the customized body electronics system		Network Gateway ECU
Troubleshooting the multiplex communication system		The DTCs (Diagnostic Trouble Codes) of the Gateway ECU are checked on the intelligent tester
Communication Speed		10 Kbps*3
HINT: 1: Optional ECUs are also included. 2: A group of data that is required for a single instance of communication. *3: A unit of data transmission per second (bits per second).

Fig 1: Multiplex Communication System Diagram - Entire System (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Multiplex Communication System Diagram - Entire System (2 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Multiplex Communication System Diagram - Door Bus

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Multiplex Communication System Diagram - Instrument Panel Bus

Fig 5: Multiplex Communication System Diagram - Line Bus

Fig 6: Multiplex Communication System Diagram - AVC-LAN