Fuel Gage Inaccurate or Inoperative (Dual Tanks)

Fuel Gage Inaccurate or Inoperative (Dual Tanks)

Diagnostic Aids

* Ensure that the fuel level is in the same range as the customer concern.
* For intermittent diagnosis, Refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics
* Refer to Fuel Level Specifications in order to verify the correct fuel level sender readings. The fuel level is available on the scan tool in the Fuel Tank Level Remaining (%) parameter in the PCM Enhanced EVAP Data list-gas only or in the Fuel Level Sensor (voltage) parameter in the Engine Data Fuel System display - 6.6L diesel only.

Test Description

Step 1 - Step 4:

Step 5 - Step 15:

The numbers below refer to the step numbers on the diagnostic table.
3. This step tests for high resistance in the signal circuits and the low reference circuit of the fuel level senders.
15. DTCs will be set in the powertrain control module (PCM) when you perform this diagnostic table.