Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read the Body Control Module (BCM) DTCs and record on the repair order.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - 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. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE BCM FOR ADDITIONAL DTCS
1. With the scan tool, read the BCM DTCs.
  Does the scan tool display DTC P0460 - 15 - FUEL LEVEL SENSOR 1 - CIRCUIT SHORT TO BATTERY OR OPEN as active?
  
  Yes
  - Go To 6
  No
  - Go To 3
CHECK THE (N5) FUEL LEVEL SIGNAL 2 CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Fuel Pump Module harness connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (N5) Fuel Level Signal 2 circuit at the Fuel Pump Module harness connector.
  Is there any voltage present?
  
  Yes
  - Go To 4
  No
  - Go To 5
CHECK FOR A SHORTED BCM WIRING HARNESS
1. Turn the ignition off.
2. Disconnect the BCM C5/E harness connector.
3. Check for continuity between the (N5) Fuel Level Signal 2 circuit and all other terminals at the BCM C5/E harness connector.
  Is there continuity between the (N5) Fuel Level Signal 2 circuit and any other terminal at the BCM C5/E harness connector?
  
  Yes
  - Repair the short in the (N5) Fuel Level Signal 2 circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 7
CHECK THE (N5) FUEL LEVEL SIGNAL 2 CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the BCM C5/E harness connector.
3. Measure the resistance of the (N5) Fuel Level Signal 2 circuit between the Fuel Pump Module harness connector and the BCM C5/E harness connector.
  Is the resistance above 3.0 Ohms?
  
  Yes
  - Repair the open in the (N5) Fuel Level Signal 2 circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Check the Auxiliary Fuel Pump Module harness for any signs of damage which could cause an open or shorted circuit. If no problems are found, replace the Auxiliary Fuel Level Sensor in accordance with the service information. Refer to MODULE, FUEL PUMP, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (G109) FUEL LEVEL SENSE RETURN CIRCUIT FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the Fuel Pump Module harness connector.
3. Disconnect the BCM C5/E harness connector.
4. Measure the resistance of the (G109) Fuel Level Sense Return circuit between the Fuel Pump Module harness connector and the BCM C5/E harness connector.
  Is the resistance above 3.0 Ohms?
  
  Yes
  - Repair the open in the (G109) Fuel Level Sense Return circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 7
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. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .