Communication system for vehicle control system having presettable initial state

A communication system for a vehicle, comprising a first station and a second station which are actuated by receiving electric power supply from a battery mounted on the vehicle, said first and second stations being positioned at various places in the vehicle, wherein the first station and the second station communicate via a communication signal line,

• said first station comprising:
• first communication means, receiving an input signal, for sending an information signal including said input signal via said communication signal line, and for receiving a communication signal sent from said second station via said communication signal line,
• outputting means for performing drive control of a plurality of driven means in accordance with said communication signal when the communication signal is received by said first communication means, and
• continuity control means, provided between said first communication means and said outputting means to electrically connect and disconnect therebetween, for electrically separating said first communication means from said outputting means to electrically disconnect therebetween by assuming a high impedance state between a time when supply of an electric power supply voltage from said battery to the first station is started, until said first communication means receives the communication signal from said second station, and
• wherein said outputting means performs drive control of said plurality of driven means in a desired initial state independent of said communication signal when connection between said first communication means and said outputting means is electrically separated by said continuity control means, and
• said second station comprising:
• second communication means for receiving said information signal from said first station via said communication signal line and for sending a control signal to said first station as said communication signal via said communication signal line, and
• arithmetic operation processing means, connected with the second communication means, for performing an arithmetic operation processing on the basis of said information signal received by said second communication means and for making said control signal on the basis of a result of said arithmetic operation processing.