Multiplex Communication Functions

Multiplex control system reduces number of wire harnesses by sending digital signals over shared multiplex communication lines. Each multiplex control unit converts input signals from each switch to digital signals, and transmits these as serial data signals. Transmitted serial data signals are converted back to switch signals by receiving multiplex control unit for switch operation. Dedicated communication lines exist between door multiplex control unit and driver's multiplex control unit (Brown wire), and between driver's multiplex control unit, driver's power seat control unit and passenger's multiplex control unit (Pink wire). See WIRING DIAGRAMS  .