Power Door Entry System: Notes

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 considers the door lock signal stuck and the BCM will set a trouble code and the signal input is ignored until the stuck condition disappears. The door lock switches and the inside and outside door handles provide a variable amount of resistance thereby dropping the voltage of the multiplexed (MUX) circuit and the BCM will respond to that command.