Theory Of Operation
WARNING: This page is about a different car, the 2022 Chrysler Voyager and 2022 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
RFHM communicates with KIN through two redundant inputs, a hard wired ignition switch position signal and a dedicated Security K Line. An active DTC will set when 3 consecutive debounced hardwired switch states do not match the switch states received over the K line.