Circuit/System Description
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
The BCM supplies battery voltage to the hands - free liftgate sensor lamp located on the lower center section of the rear bumper. The hands - free liftgate sensor lamp illuminates the area where the sensor for the foot activated liftgate actuator is located for hands free liftgate operation. When the keyless entry transmitter is operated to either the lock or unlock functions, a serial data message is sent to the BCM. The BCM responds to the input by illuminating the hands-free liftgate sensor lamp. The hands - free liftgate sensor lamp will display the image of the car brand logo on the ground directly under the center of the rear bumper.