Circuit/System Description
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The console passive antenna is located in the center console. It is used as short range low frequency (LF) antennas. The console antenna is used to determine transmitter placement within the vehicle. When a valid keyless entry transmitter is within the passenger compartment, the console antenna broadcasts a challenge within the passenger compartment to the transmitter. If the response from the transmitter via radio frequency (RF) is a valid response, the antenna will determine there is a transmitter within the vehicle. If no response is received, the antenna determines that no transmitter is in the vehicle.