Theory Of Operation
WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.
The Camera is activated when the ignition switch is in the RUN position. The (F923) circuit supplies power to the camera. The camera sends a video signal (std. NTSC i.e. TV) to the Radio Receiver Module (RRM), using circuits (X970) camera signal, (X971) signal return and (X972) camera shield, which displays on the Radio Receiver Module (RRM) screen. The screen toggles functions displaying only one kind of image at a time. And in reverse, the rear camera has priority. The (Z923) circuit is ground for the system.