Fuel Level Sensor: Testing and Inspection

DIAGNOSIS AND TESTING - 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. To test the gauge sending unit only, it must be removed from vehicle. The unit is a separate part of the lower fuel tank module section.

Remove only the upper section of the fuel pump module. Measure the resistance across the sending unit terminals. With float in up position, resistance should be 20 ohms (+/- 5%). With float in down position, resistance should be
220 ohms (+/- 5%).