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System Diagram

WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Wireless Door Lock Control System - System Diagram (1 Of 2)
GTY119004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Wireless Door Lock Control System - System Diagram (2 Of 2)
GTY139944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Transmitting ECU
(Transmitter)		 Receiving ECU
(Receiver)		 Signal Line
Certification ECU Main body ECU RH IG relay operating states BEAN
Power source ECU Main body ECU RH Engine switch signal BEAN
Main body ECU RH Power window master switch Power window open signal BEAN
Power window master switch Sliding roof ECU Sliding roof open signal BEAN
Main body ECU RH Front controller Vehicle horn sound request BEAN
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