RAM 1500 Truck 4WD V8-5.9L VIN Z (2002)
Fuel Gauge Sender: Testing and Inspection
FUEL LEVEL SENDING UNIT
The fuel level sending unit contains a variable resistor (track). As the float moves up or down, electrical resistance will change. Refer to Instrument
Panel and Gauges for Fuel Gauge testing. To test the gauge sending unit only, it must be removed from vehicle. The unit is a part of the fuel pump
module. Refer to Fuel Pump Module Removal/Installation for procedures. Measure the resistance across the sending unit terminals. With float in up
position, resistance should be 20 ohms (± 6 ohms). With float in down position, resistance should be 220 ohms (± 6 ohms).