Circuit/System Description
WARNING: This page is about a different car, the 2010 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The rear object sensor control module directly controls the parking assist indicators located in the rear parking assist display. The rear object sensor control module monitors the voltage supplied to the rear parking assist display to verify it is within operating range. The rear parking assist display consists of two amber and one red LED that indicate the distance of an object from the rear bumper. As objects become progressively closer to the bumper, the rear object sensor control module will illuminate the LEDs in a sequence: one amber LED, both amber LEDs, and lastly, both amber LEDs and the red LED.