Fuel Level Sensor: Description and Operation

FUEL LEVEL INPUT (FLI)

NOTE: The Ford GT uses a piezoelectric sonar type fuel level sensor. The sensor is located in the tank and the sensor signal is provided as a communications network message by the instrument cluster to the PCM.

The FLI is either a hard wire signal input to the PCM from the fuel pump (FP) module or a communications network message. Most vehicle applications use a potentiometer type FLI sensor connected to a float in the FP module to determine fuel level.