FixVault

System Diagram

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Wireless Door Lock Control System Diagram (1 Of 2)
G05754230Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Wireless Door Lock Control System Diagram (2 Of 2)
G05754231Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
SIGNAL REFERENCE

Transmitting ECU (Transmitter) Receiving ECU (Receiver) Signal Line
Main body ECU RH (cowl side junction block RH) Certification ECU (smart key ECU assembly) IG switch signal BEAN
Power source ECU Main body ECU RH (cowl side junction block RH) Engine switch signal BEAN
Power window master switch Main body ECU RH (cowl side junction block RH) Power window open signal BEAN
Power window master switch(1) Sliding roof ECU(1) Sliding roof open signal(1) BEAN
Main body ECU RH (cowl side junction block RH) Front controller Vehicle horn sound request BEAN
(1) w/ Sliding Roof