Theory Of Operation
WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.
The Keyless Ignition Node (KIN) communicates with the RF Hub over a dedicated Security K Line Communication circuit. The K Line circuit is a one wire, low speed network operating similarly to a LIN bus system. The RF Hub compares the information on the dedicated Security K Line communication circuit to the Ignition Switch Position Signal circuit, when the ignition switch position is changed.