Simple Bus Interface (SBI) Serial Data Link

The simple bus interface is a serial data link. This serial data link replaces vehicle cables between various door modules with a single wire. The same amount of information is sent by multiplexing (time-sharing) data to and from each device over that wire. The serial data signals are referenced to ground. If the simple bus interface is lost, the passenger door module, LRDM, and RRDM will enter the sleep mode. With the door modules in sleep mode, no power window operations are possible.