Theory Of Operation
WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
The Radio Frequency (RF) Hub module sends out a start signal request message over the communication network when either a valid remote start request occurs or the Keyless Ignition Node (KIN) receiver Start/Stop Button is pressed and cycled to RUN with the Brake Pedal applied while the FOB is present in the vehicle. The Body Control Module (BCM) receives the start signal request message and provides voltage to the coil of the Starter Relay.