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. Turn the ignition on.
2. With the scan tool, read DTCs and record on the repair order.
  Is the DTC active or pending?
  
  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. Refer to BODY VERIFICATION TEST .
FUEL LEVEL SENDING UNIT
1. Turn the ignition off.
2. Disconnect the Secondary Fuel Pump Module harness connector.
3. Turn the ignition on.
4. With the scan tool, read DTCs.
  NOTE:
  The scan tool should display the P2068-FUEL LEVEL SENSOR 2 CIRCUIT HIGH DTC as active or pending with the harness connector unplugged
  
  Does the scan tool display as describe above?
  
  Yes
  - Replace the Fuel Level Sensor 2 in accordance with the Service Information. Refer to BODY VERIFICATION TEST .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (N5) FUEL LEVEL SENSOR SIGNAL 2 CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the BCM C5 harness connector.
3. Check for continuity between ground and the (N5) Fuel Level Sensor Signal 2 circuit at the Secondary Fuel Pump Module harness connector.
  Is there continuity between ground and the (N5) Fuel Level Sensor Signal 2 circuit?
  
  Yes
  - Repair the (N5) Fuel Level Sensor Signal 2 circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (N5) FUEL LEVEL SENSOR SIGNAL 2 CIRCUIT FOR A SHORT TO THE (G109) FUEL LEVEL SENSE RETURN CIRCUIT
1. Check for continuity between the (G109) Fuel Level Sense Return circuit and the (N5) Fuel Level Sensor Signal 2 circuit at the Secondary Fuel Pump Module harness connector.
  Is there continuity between the (G109) Fuel Level Sense Return circuit and the (N5) Fuel Level Sensor Signal 2 circuit?
  
  Yes
  - Repair the short between the (G109) Fuel Level Sense Return circuit and the (N5) Fuel Level Sensor Signal 2 circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 5
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 Service Bulletins 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 in accordance with the Service Information. Refer to MODULE, BODY CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .