Power Door Entry System: Notes

The Driver door has three circuits that will signal a door entry, lock/unlock request:

• Digital outside door handle input
• Muxed door lock and interior handle switch
• Driver door cylinder unlock switch mux

  The passenger door has one muxed input: door lock switch, inside and outside door handle switches. Each of the muxed switches has variable amounts of resistance (there by dropping the voltage) as an input to the BCM. When the BCM receives input for a door open request from the inside or outside door handle, it will turn the respective unlatch drivers on for a specified time of 100 mSec. If the request is there beyond 10 Seconds, the BCM will ignore this input and set a stuck switch trouble code until the stuck conditions disappears.