System Diagram

Fig 1: Engine Immobilizer System Diagram

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Communication table:

COMMUNICATION CHART

Transmitting ECU (Transmitter)	Receiving ECU (Receiver)	Signals	Communication method
Main body ECU	Certification ECU	Key code recognition signal	LIN
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