Circuit/System Testing
- With the ignition OFF, disconnect C413.
- With the ignition ON, install a scan tool and observe the Fuel Tank Level Remaining parameter in the PCM/ECM EVAP Data List.
- If the Fuel Tank Level Remaining parameter indicates a value less than 4 percent, check the signal circuit of the fuel level sensor for a short to ground between C413 and the fuel level sensor.
- If the fuel level sensor circuit tests normal between C413 and the fuel level sensor, replace the fuel level sensor.
- If the Fuel Tank Level Remaining parameter indicates a value greater than 4 percent, check the signal circuit of the fuel level sensor circuit for a short to ground between C413 and the PCM/ECM.
- If the fuel level sensor circuit tests normal between C413 and the PCM/ECM replace the PCM/ECM