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 unit 20-pin connector terminal A15 to driver's unit 24-pin connector terminal A2 (Brown wire) and from driver's unit 22-pin connector terminal B1 (Pink wire) to passenger's unit 22-pin connector terminal B9.