Voyager L4-2.4L VIN B (1997)
Fuel Gauge: Description and Operation
CIRCUIT OPERATION
The Body Control Module (BCM) calculates the pointer position of the fuel gauge based on the input of the fuel tank gauge level sending unit
relative to fuel tank ground. The G4 circuit sends the signal to the BCM.
The fuel pump module, located in the fuel tank, contains the fuel pump and the variable resistor for the fuel gauge. As the position of the float arm
changes, the resistor changes the current flow through the G4 circuit. The change in current flow is then measured by the BCM and pointer
position is adjusted to reflect the fuel tank level. The signal is sent over the CCD Bus to the instrument cluster.
