Automatic Door Locks

B+ is supplied to the stop lamp switch by fuse #2. The stop lamp switch feeds B+ to the transmission control selector switch. Ground is provided to the transmission control selector switch from G103.

When the transmission is shifted out of the PARK position, terminal B01 of the BCM connector C1 is grounded. When the BCM detects that this terminal has been grounded, it internally grounds terminal D02 of connector C2. This energizes the door lock relay. All of the side door lock actuators activate and lock all the doors.

When the transmission is shifted into the PARK position, ground is removed from terminal B01 of the BCM connector C1. When the BCM detects that the ground has been removed from this terminal, it internally grounds terminals C10 and C11 of connector C2. Terminal C10 energizes the driver door unlock relay which unlocks the driver's door. Terminal C11 energizes the door unlock relay which unlocks the remaining three doors.