Diagnostic Test

ACTIVE DTC
1. Ignition on, engine not running.
2. With the scan tool, select View DTCs.
  Is the DTC Active at this time?
  
  Yes
  - Go to step 2
  No
  - Refer to the INTERMITTENT CONDITION Diagnostic Procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
FUEL PUMP CONTROL OPERATION FROM THE PCM

Fig 1: Using 12-Volt Test Light Connected To B+ To Probe Fuel Pump Control Circuit In C1 TIPM Harness Connector
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the C1 TIPM harness connector.
  NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
3. Ignition on, engine not running.
4. Using a 12-volt test light connected to B+, probe the (K31) Fuel Pump Control circuit in the C1 TIPM harness connector.
5. Using a scan tool actuate the Fuel Pump under the PCM actuations.
  Does the test light illuminate accordingly during the actuation?
  
  Yes
  - Go to step 5
  No
  - Go to step 3
(K31) FUEL PUMP CONTROL CIRCUIT OPEN

Fig 2: Checking Fuel Pump Control Circuit For Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the C3 PCM harness connector.
  CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box 8815 to perform diagnosis.
3. Measure the resistance of the (K31) Fuel Pump Control circuit from the C1 TIPM harness connector to the appropriate terminal of special tool #8815.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Go to step 4
  No
  - Repair the open in the (K31) Fuel Pump Control circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
(K31) FUEL PUMP CONTROL CIRCUIT SHORTED TO GROUND

Fig 3: Checking Fuel Pump Control Circuit For Short To Ground
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (K31) Fuel Pump Control circuit in the TIPM C1 harness connector.
  Is the resistance below 100 ohms?
  
  Yes
  - Repair the short to ground in the (K31) Fuel Pump Control circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 8
(N1) FUEL PUMP OUTPUT CIRCUIT OPEN

Fig 4: Checking Fuel Pump Output Circuit For Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the C5 TIPM harness connector.
3. Disconnect the Fuel Pump Module harness connector.
4. Measure the resistance of the (N1) Fused Fuel Pump Output circuit from the C5 TIPM harness connector and the Fuel Pump Module harness connector.
  Is the resistance above 5.0 ohms?
  
  Yes
  - Repair the open in the (N1) Fused Fuel Pump Output circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 6
(N1) FUEL PUMP OUTPUT CIRCUIT SHORTED TO GROUND

Fig 5: Checking Fuel Pump Output Circuit For Short To Ground
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (N1) Fused Fuel Pump Output circuit at the Fuel Pump Module harness connector.
  Is the resistance below 100 ohms?
  
  Yes
  - Repair the short to ground in the (N1) Fused Fuel Pump Output circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 7
FUEL PUMP MODULE/TIPM

Fig 6: Using 12-Volt Test Light Connected To Ground To Probe Fused Fuel Pump Output Circuit At Fuel Pump Module Harness Connector
Courtesy of CHRYSLER LLC
1. Connect the C3 PCM harness connector.
2. Connect the C1 and C5 TIPM harness connectors.
3. Turn the ignition on.
4. Using a scan tool actuate the Fuel Pump Module.
5. Using a 12-volt test light connected to ground, probe the (N1) Fused Fuel Pump Output circuit at the Fuel Pump Module harness connector.
  Does the test light illuminate?
  
  Yes
  - Replace the Fuel Pump Module in accordance with the Service Information. Refer to Fuel System/Fuel Delivery/MODULE, Fuel Pump - Removal .
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Replace the Totally Integrated Power Module in accordance with the Service Information. Refer to Electrical/Power Distribution/MODULE, Totally Integrated Power (TIPM) - Removal .
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Pump Module and the Powertrain Control Module (PCM).
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 and Control Module connectors.
4. Refer to any Technical Service Bulletins that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
  No
  - Replace and program the Powertrain Control Module per Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure