Circuit Description
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
The infrared transmitter is powered by the retained accessory power (RAP) relay. When a key on the remote is pressed, the remote control sends an infrared message to the infrared transmitter. The infrared transmitter will convert these infrared signals into a frequency and send that message to the radio via the remote infrared signal circuits (+) and (-).