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Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information And Procedures >> DTC P0461-P0464: Fuel Level Sensor (FWD With Gasoline Engine) >> Component Testing

Component Testing

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Remove the fuel level sensor.
  3. Test for 245 to 255 ohms between the test points:Signal circuit terminal 5 & Low Reference circuit terminal 6 - Fuel Level Sensor - Empty
    • If not between 245 and 255 ohms 

      Replace the component:Fuel Level Sensor

    • Go to next step: If between 245 and 255 ohms 
  4. Test for 37 to 43 ohms between the test points:Signal circuit terminal 5 & Low Reference circuit terminal 6 - Fuel Level Sensor - Full
    • If not between 37 and 43 ohms 

      Replace the component:Fuel Level Sensor

    • Go to next step: If between 37 and 43 ohms 
  5. Perform a component sweep test:Fuel Level Sensor
  6. Test for 37-43 to 245-255 ohms between the test points:Signal circuit terminal 5 & Low Reference circuit terminal 6
  7. The value should not spike or drop out while moving the sensor through the entire range.
    • If not between 37-43 and 245-255 ohms or spikes or drops out 

      Replace the component:Fuel Level Sensor

    • Go to next step: If between 37-43 to 245-255 ohms and there are no spikes or drops out 
  8. All OK.
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