Diagnostic Test

1) FUEL PUMP OPERATION
Ignition on, engine not running.

With a scan tool under the PCM Actuators, actuate the Fuel Pump.

Is the Fuel Pump operating?

Yes
1. Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Refer to INTERMITTENT CONDITION .
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 2).
2) FUEL PUMP CONTROL OPERATION FROM THE PCM
Turn the ignition off.

Disconnect the C2 TIPM harness connector.

Ignition on, engine not running.

Using the scan tool under the PCM Actuators, actuate the Fuel Pump.

With a 12-volt test light connected to ground, probe the (K31) Fuel Pump Control circuit in the TIPM C2 harness connector.

Does the test light illuminate brightly and flash on an off?

Yes
1. Go to 3).
No
1. Perform the Diagnostic Procedure for P0627-FUEL PUMP CONTROL CIRCUIT. Refer to P0627-FUEL PUMP RELAY CIRCUIT .
3) (N1) FUEL PUMP CONTROL OUTPUT CIRCUIT OPEN

Fig 1: Measuring Resistance Of The Fuel Pump Control Output Circuit
Courtesy of CHRYSLER LLC

Turn the ignition off

Disconnect the TIPM C7 harness connector.

Disconnect the Fuel Pump Module harness connector.

Measure the resistance of the (N1) Fuel Pump Control Output circuit between the TIPM C7 harness connector and the Fuel Pump Module harness connector.

Is the resistance below 5.0 ohms?

Yes
1. Go to 4).
No
1. Repair the short to ground in the (N1) Fuel Pump Control Output circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
4) FUEL PUMP MODULE

Fig 2: Checking Fuel Pump Control Output Circuit With 12-Volt Test Light
Courtesy of CHRYSLER LLC

Connect the C2 and C7 TIPM harness connectors.

Ignition on, engine not running.

Using the scan tool under the TIPM Actuators, actuate the Fuel Pump.

With a 12-volt test light connected to ground, probe the (N1) Fuel Pump Control Output circuit at the Fuel Pump Module harness connector.

Does the test light illuminate brightly and flash on and off?

Yes
1. Replace the Fuel Pump Module in accordance with the Service Information.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 5).
5) TOTALLY INTEGRATED POWER MODULE
NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage or terminal push out. Repair as necessary.

Using the schematics as a guide, inspect the wire harness and connectors.

Pay particular attention to all Power and Ground circuits.

Were any problems found?

Yes
1. Repair as necessary.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Replace the Totally Integrated Power Module in accordance with the Service Information.
2. Perform POWERTRAIN VERIFICATION TEST .