System Diagram

Fig 1: Wireless Door Lock Control System Diagram

Transmitting ECU (Transmitter)	Receiving ECU	Signals	Communication Method
Mulitplex network body ECU	Front Controller	Wireless door lock buzzer drive (answer back) signal Headlight drive (panic alarm) signal Horn drive (panic alarm) signal Security horn drive (panic alarm) signal	Multiplex communication system
Multiplex netowrk body ECU	Combination meter	Door warning light ON signal	Multiplex communication system