Fuel Gage Inaccurate or Inoperative

DIAGNOSTIC AIDS
^ Ensure that the fuel level is in the same range as the customer concern.
^ For intermittent diagnosis, refer to Testing for Intermittent and Poor Connections in Diagnostic Aids.
^ Refer to Fuel Level Specifications in order to verify the correct fuel level sensor readings. The Fuel Tank Level Remaining %) parameter is available on the scan tool in the PCM Enhanced EVAP data list.

IMPORTANT: When inspecting for a deformed or warped fuel tank, measure the resistance of the suspect fuel level sensor at empty, with the sensor in the fuel tank, and again with the sensor removed from the fuel tank. The measured resistance values should be the same at empty. If the measured resistance values are not the same, refer to Fuel Tank Replacement (Right) or Fuel Tank Replacement (Left) in Computers and Controls Systems.

TEST DESCRIPTION

Steps 1-3:

Steps 4-13:

The number(s) below refer to the step number(s) on the diagnostic table.
3. This step tests for a high resistance in the signal circuit and the low reference circuit of the fuel level sensor.
13. DTCs will be set in the PCM when you perform this diagnostic table.