Fuel Level Sensor: Testing and Inspection

1999 Chrysler Cirrus L4-2.4L VIN XSECTION Testing and Inspection

Level Sensor Diagnosis:




This procedure tests the resistance of the level sensor itself. It does not test the level sensor circuit.

The level sensor is a variable resistor. Its resistance changes with the amount of fuel in the tank, The float arm attached to the sensor moves as the fuel level changes. To test the level sensor, connect an ohmmeter across the sensor signal and sensor ground terminals of the fuel pump module connector. Move the float lever over the entire range to the positions shown in the resistance chart.
Record the resistance at each end point. Replace the level sensor if the resistance is not within specifications, or an open circuit is noted during the entire range inspection.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.