Diagnostic Test

ACTIVE DTC
NOTE: Diagnose any communication DTCs before continuing.
1. Start the engine.
2. Allow the engine to reach normal operating temperature.
3. With the scan tool, select View DTCs and record the related Freeze Frame data.
  NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data.
  
  Is the DTC Active at this time?
  
  Yes
  - Go to step 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
FUEL LEVEL SENSOR

Fig 1: Fuel Pump Module Electrical Harness Connector
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Fuel Pump Module electrical harness connector.
3. Ignition on, engine not running.
4. With the scan tool, monitor the Fuel Level Signal voltage.
5. Connect a jumper wire between the (N4) Fuel Level Signal circuit and the (K91) Sensor ground circuit.
  Did the Fuel Level voltage change from approximately 5 Volts to 0 Volts?
  
  Yes
  - Verify that there is good pin to terminal contact in the Fuel Pump Module and the TIPM connectors. If OK, replace the Fuel Level Sensor.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 3
    NOTE: Remove the jumper wire before continuing.
(N4) FUEL LEVEL SIGNAL CIRCUIT SHORTED TO VOLTAGE

Fig 2: Measuring Voltage On Fuel Level Signal Circuit In Fuel Pump Module Harness Connector
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the C7 TIPM harness connector.
3. Ignition on, engine not running.
4. Measure the voltage on the (N4) Fuel Level Signal circuit in the Fuel Pump Module harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (N4) Fuel Level Signal circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 4
(N4) FUEL LEVEL SIGNAL CIRCUIT OPEN

Fig 3: Checking Fuel Level Signal Circuit For Open Or Excessive Resistance
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Measure the resistance of the (N4) Fuel Level Signal circuit from the Fuel Pump Module harness connector to the C7 TIPM harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go to step 5
  No
  - Repair the open in the (N4) Fuel Level Signal circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
(K91) SENSOR GROUND CIRCUIT OPEN

Fig 4: Checking Sensor Ground Circuit For Open Or Excessive Resistance
Courtesy of CHRYSLER LLC
1. Disconnect the C1 TIPM harness connector.
2. Measure the resistance of the (K91) Sensor Ground circuit from the Fuel Pump Module harness connector to the TIPM harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go to step 6
  No
  - Repair the open in the (K91) Sensor Ground circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
TOTALLY INTEGRATED POWER MODULE (TIPM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Pump Module and the Totally Integrated Power Module (TIPM).
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 TIPM connectors.
4. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .