System Diagram

WARNING: This page is about a different car, the 2012 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Smart Key System Diagram (For Entry Function) System Diagram (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Smart Key System Diagram (For Entry Function) System Diagram (2 Of 2)

Transmitting ECU (Transmitter)	Receiving ECU	Signal	Communication Method
Main body ECU (Instrument panel junction block)	Certification ECU (smart key ECU assembly)	Door lock output signal	CAN
		Luggage compartment door output request signal
		Wireless door lock buzzer request signal
		Door lock position switch signal
		Driver door key operated switch signal
		Luggage compartment door key operated switch signal
Certification ECU (smart key ECU assembly)	Main body ECU (Instrument panel junction block)	Illumination light request signal	CAN
		Light answer back signal
		Door lock/unlock request signal
Certification ECU (smart key ECU assembly)	Combination meter	Meter buzzer single-tone request signal	CAN
		Meter buzzer intermittence request signal
		Meter buzzer continuation request signal
Combination meter	Certification ECU (smart key ECU assembly) Main body ECU (Instrument panel junction block)	Vehicle speed signal	CAN