Fuel Gauge

Fuel level data is sent from the PCM through the class II serial data link to the instrument cluster. The instrument cluster will then compare the fuel level data with a sixteen-point look-up table to determine needle deflection. A smooth filter is used to secure a continuous response. The instrument cluster will determine if a low fuel condition is present. In the event of a low fuel condition, the instrument cluster turns on the LOW FUEL indicator. In the event the fuel level data is lost, or the PCM is in a state of health fault, the instrument cluster will drive the fuel gauge to empty.