Circuit/System Description

The K9 Body Control Module monitors the voltage level of the signal circuit 126. The door open switch and the door ajar switch contacts will be open with the door is fully closed, the door switches within the door latch are designed so that the when the door is ajar, the contact in the door ajar switch closes, the voltage is pulled low and the window motor will then send a serial data message to the body control module indicating that the door is ajar. When the door is opened further, the contact in the door open switch will then decrease the resistance in the signal circuit to the ground for the door open signal circuit, the body control module will then detect the change in the voltage level that the door is open.