Theory Of Operation
WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.
The fuel level signal is a direct input to the Cluster. The fuel level signal is sent to the Totally Integrated Power Module (TIPM) over the CAN B bus circuit. The Powertrain Control Module (PCM) receives the fuel level signal from the TIPM over the CAN C bus circuit.