Battery voltage is applied at all times through the door lock fuse to the power door lock control module. The power door lock module is permanently grounded at G200.

When either the LH front lock cylinder or the power door lock switch is moved to the UNLOCK position, the power door lock control module receives a ground signal at the UNLOCK input terminal. When this ground signal is received, the power door lock control module applies voltage to the UNLOCK output terminal and a ground to the LOCK output terminal. With both power and ground provided to the power door lock actuators, the actuators turn the push/pull mechanical linkages in the doors in order to unlock the doors.

When any of the following items is moved to the LOCK position, the power door lock control module receives a ground signal at the LOCK input terminal:

When this ground signal is received, the power door lock control module applies voltage to the LOCK output terminal and a ground to the UNLOCK output terminal. With both power and ground provided to the power door lock actuators, the actuators turn the push/pull mechanical linkages in the doors in order to lock the doors.