Fuel Level Sensors
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The fuel level sensors electrical output signal is proportional to the amount of fuel in the tank and the position of the float arm. The measured resistance is processed by Body Control Module/Gateway Module (BCM/GWM) and is sent to the Instrument Cluster (IC) via the High Speed Controller Area Network (CAN) comfort systems bus to implement an anti-slosh function. This monitors the signal and updates the pointer position at regular intervals, preventing constant pointer movement caused by fuel movement in the tank due to cornering and braking.
When the fuel level becomes low, a fuel warning indicator in the IC is illuminated and a message is displayed.