Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the fuel level sensors.
- Ignition ON, verify that the scan tool Fuel Level parameter is less than 7.6 liters (2 gallons)
- If greater than 7.6 liters, test the signal circuit for a short to ground. If the circuit tests normal, replace the ECM/PCM.
- If all circuits test normal, test or replace the fuel level sensors.