Fuel Gauge: Description and Operation

FUEL GAGE

The instrument panel cluster (IPC) displays the fuel level as determined by the powertrain control module (PCM) or the engine control module (ECM). The IPC receives a Class 2 from the PCM/ECM indicating the fuel level percent. The fuel gage defaults to empty if the PCM/ECM detects a malfunction in the fuel level sensor circuit or the IPC detects a loss of class 2 communications with the PCM/ECM.