FixVault

System Diagram

WARNING: This page is about a different car, the 2010 Lexus GS 450h. However, it is still accessible from the selected car via links, so may be relevant.
Item Details
Number of BEAN connected ECUs*1 20
Number of CAN connected ECUs*1 14
Number of AVC-LAN connected ECUs*1 3
Number of communication frames*2 208
Gateway function between BEAN and diagnosis Network gateway ECU
Gateway function between BEAN and AVC-LAN Network gateway ECU
Gateway function between BEAN and CAN Network gateway ECU
ECU in charge of vehicle customization information Network gateway ECU
Protocol CAN, BEAN and AVC-LAN

HINT: 

*1: Optional ECUs are also included.

*2: An amount of data that is required for a single instance of communication.

Fig 1: Network Gateway ECU - System Diagram (1 Of 5)
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Fig 2: Network Gateway ECU - System Diagram (2 Of 5)
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Fig 3: Network Gateway ECU - System Diagram (3 Of 5)
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Fig 4: Network Gateway ECU - System Diagram (4 Of 5)
GTY116791Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 5: Network Gateway ECU - System Diagram (5 Of 5)
GTY150459Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002