2500 4x4 Pickup V8-318 5.2L Magnum (1995)
Fuel Gauge: Description and Operation
Circuit G4 connects the fuel level sensor to the fuel gauge in the instrument cluster. Circuit F14 from fuse 14 in the fuse block supplies voltage to the fuel
gauge. The fuel level sensor draws voltage from circuit F14 through the fuel gauge on circuit G4.
As current flows through the coils in the fuel gauge, it creates a magnetic field. The magnetic field controls the position of the fuel gauge pointer.
The fuel level sensor contains a variable resistor. As the position of the float arm on the fuel level sensor changes, the resistor changes the current flow
through the fuel gauge circuit. A change in current flow alters the magnetic field in the fuel gauge, which changes the pointer position.
Circuit Z11 provides the ground path for the fuel level sensor.
