System Diagram

Fig 1: Engine Immobilizer System - System Diagram

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Communication table:

COMMUNICATION CHART

Transmitting ECU (Transmitter)	Receiving ECU (Receiver)	Signals	Communication method
Certification ECU	Main body ECU RH	Security indicator light flash signal Security indicator light illumination signal Immobilizer system set/unset signal	BEAN
Power source control ECU	Certification ECU	Key code recognition signal	BEAN
ID code box	Certification ECU	DTC(B2791) signal	LIN
ID code box	Steering lock ECU	Steering lock release signal Matching request random number signal	LIN
ID code box	Certification ECU	Matching request random number signal	LIN