System Diagram

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Smart Access System Diagram (1 Of 2)

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Fig 2: Smart Access System Diagram (2 Of 2)

Communication table

SIGNAL REFERENCE

Sender	Receiver	Signal	Line
Hybrid vehicle control ECU	Main body ECU	READY signal	CAN
Meter ECU	Main body ECU	Vehicle speed signal	CAN
Steering lock ECU	Main body ECU	Steering lock/unlock signal	LIN
Certification ECU	Main body ECU	LIN master signal	LIN
Main body ECU	ID code box	ID required signal	LIN
Main body ECU	Certification ECU	Key existence condition signal	LIN