P2065-15

P2065-15-FUEL LEVEL SENSOR 2 - CIRCUIT SHORT TO BATTERY OR OPEN

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Body Control Module (BCM) provides a switched reference voltage on the fuel level signal circuit through a pull-up resistor that is connected to battery voltage. The BCM monitors the voltage on the fuel level signal circuit. The fuel level signal is adjusted for changes in battery voltage. The voltage value is then transmitted as a network message on the communication network.

- When Monitored:
With the ignition on.

Battery voltage greater than 10.4 volts.

- Set Condition:
The Body Control Module (BCM) detects that the Fuel Level Sensor 2 input voltage is above the maximum acceptable value.





1. CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. With the scan tool, read DTCs.

Does the scan tool display DTC: P2065-15-FUEL LEVEL SENSOR 2 - CIRCUIT SHORT TO BATTERY OR OPEN?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE (N5) FUEL LEVEL SENSOR SIGNAL 2 CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Fuel Pump Module C1 harness connector.
3. Disconnect the BCM E harness connector.
4. Turn the ignition on.
5. Measure the voltage between ground and the (N5) Fuel Level Sensor Signal 2 circuit at the Fuel Pump Module C1 harness connector.

Is there any voltage present?

Yes

- Repair the short to voltage in the (N5) Fuel Level Sensor Signal 2 circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE FUEL LEVEL SENSOR 2 FOR CORRECT OPERATION
1. Turn the ignition off.
2. Connect the BCM E harness connector.
3. Connect a jumper wire between the (N5) Fuel Level Sensor Signal 2 circuit and the (G109) Fuel Level Sense Return circuit at the Fuel Pump Module C1 harness connector.
4. Turn the ignition on.
5. With the scan tool, read DTCs.

Does the scan tool display DTC: P2065-11-FUEL LEVEL SENSOR 2 - CIRCUIT SHORT TO GROUND?

Yes

- Replace the Auxiliary Fuel Level Sending Unit. Fuel Tank - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. CHECK THE (N5) FUEL LEVEL SENSOR SIGNAL 2 CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the BCM E harness connector.
3. Measure the resistance of the (N5) Fuel Level Sensor Signal 2 circuit between the Fuel Pump Module C1 harness connector and the BCM E harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 5

No

- Repair the open in the (N5) Fuel Level Sensor Signal 2 circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

5. CHECK THE (G109) FUEL LEVEL SENSE RETURN CIRCUIT FOR AN OPEN
1. Measure the resistance of the (G109) Fuel Level Sense Return circuit between the Fuel Pump Module C1 harness connector and the BCM E harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 6

No

- Repair the open in the (G109) Fuel Level Sense Return circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

6. BODY CONTROL MODULE (BCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Pump Module and the BCM.
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Fuel Pump Module and the BCM harness connectors.
4. Perform any Technical Service Bulletins (TSB)s that may apply.

Were any problems found?

Yes

- Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the BCM. Body Control Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.