Multiplex Communication Functions

Multiplex control system reduces the number of wire harnesses by sending digital signals over shared multiplex communication lines. A CPU converts input signals from each switch to digital signals, and transmits these as serial signals. Transmitted serial signals from multiplex control units are converted to switch signals for switch operation. There are 2 dedicated communication lines between multiplex control units. From door multiplex control unit 20-pin connector "A" terminal No. 15 to driver's multiplex control unit 24-pin connector "A" terminal No. 2 (Brown wire) and from driver's multiplex control unit 22-pin connector "B" terminal No. 1 (Pink wire) to passenger's multiplex control unit 22-pin connector "B" terminal No. 9.