All Door Lock

Pressing LOCK once on either door lock switch sends a ground signal, through a 470 Ohm resistor, to the BCM through the door lock/unlock input circuit. The door lock/unlock input signal causes the BCM to supply ground to the power door unlock feed circuits and the BCM also supplies voltage to the power door lock feed circuits for 300 ms. The voltage and ground that is supplied, energizes all of the door actuators and locks all of the doors.