Diagnostic Procedure
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE - FUEL LEVEL SENDING UNIT FAILURE
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Turn the ignition on. With the DRBIII®, erase DTCs. Cycle the ignition. Wait approximately 1 minute. With the DRBIII® in Body Computer, read DTCs. Does the DTC reset? Yes --> Go To 2 No --> The condition is not present at this time. Monitor DRBIII® parameters while wiggling the related wire harness. Refer to any Technical Service Bulletins (TSBs) that may apply. Visually inspect the related wiring harness and connector terminals. Perform BODY VERIFICATION TEST - VER 1 . |
All |
| 2 | Turn the ignition off. Disconnect the Fuel Tank Module harness connector. Turn the ignition on.
NOTE:
The BCM sends out a low current 12 volt signal on the Fuel Level Sensor Signal circuit. This low current should not illuminate a 12 volt test light. Using a 12-volt test light connected to ground, probe the Fuel Level Sensor Signal circuit in the Fuel Tank Module harness connector. Does the test light illuminate? Yes --> Repair the Fuel Level Sensor Signal circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3 |
All |
| 3 | Turn the ignition off. Disconnect the Fuel Tank Module harness connector. Measure the resistance of the Fuel Level Sensor Ground circuit in the Fuel Tank Module harness connector. Is the resistance below 5.0 ohms? Yes --> Go To 4 No --> Repair the Fuel Level Sensor Ground circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . |
All |
| 4 | Turn the ignition off. Disconnect the BCM harness connector. Disconnect the Fuel Tank Module harness connector. Measure the resistance between the Fuel Level Sensor Signal circuit and the Sensor Ground circuit in the BCM connector. Is the resistance below 5.0 ohms? Yes --> Repair the Fuel Level Sensor Signal circuit for a short to the Sensor Ground circuit. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 5 |
All |
| 5 | Turn the ignition off. Disconnect the BCM harness connector. Disconnect the Fuel Tank Module harness connector. Measure the resistance between ground and the Fuel Level Sensor Signal circuit. Is the resistance below 5.0 ohms? Yes --> Repair the Fuel Level Sensor Signal circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 6 |
All |
| 6 | Turn the ignition off. Disconnect the Fuel Tank Module harness connector. Disconnect the BCM harness connector. Measure the resistance of the Fuel Level Sensor Signal circuit between the Fuel Tank Module harness connector and the BCM harness connector. Is the resistance below 5.0 ohms? Yes --> Go To 7 No --> Repair the Fuel Level Sensor Signal circuit for an open. Perform BODY VERIFICATION TEST - VER 1 . |
All |
| 7 | Turn the ignition off. Disconnect the Fuel Tank Module harness connector. Measure the resistance of the Fuel Level Sensor. The Fuel Level Sensor resistance must be within the following values: Full = Approximately 130 Ohms 3/4 = Approximately 340 Ohms 1/2 = Approximately 550 Ohms 1/4 = Approximately 760 Ohms Empty = Approximately 940 Ohms Does the Fuel Level Sensor resistance measure within specifications? Yes --> Replace the Body Control Module in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1 . No --> Replace the Fuel Level Sensor in accordance with the Service Information.. Perform BODY VERIFICATION TEST - VER 1 . |
All |