Diagnostic Test

1) DTC IS ACTIVE
NOTE: If P0627, P0628 or P0629 has set along with this DTC, diagnose those DTC(s) first before continuing.

Ignition on, engine not running.

With the scan tool, select View DTCs.

Is the status Active for this DTC?

Yes
1. Go To 2).
No
1. Refer to the *CHECKING FOR AN INTERMITTENT CONDITION Diagnostic Procedure.
2) (N1) FUEL PUMP CONTROL OUTPUT CIRCUIT SHORTED TO BATTERY VOLTAGE

Fig 1: Measuring Voltage Of The (N1) Fuel Pump Control Output Circuit In The C7 TIPM Harness Connector
Courtesy of CHRYSLER LLC

Turn the ignition off

Disconnect the C7 TIPM harness connector.

Turn the ignition on.

Using a voltmeter, measure the voltage of the (N1) Fuel Pump Control Output circuit in the C7 TIPM harness connector.

Does the voltmeter indicate voltage present?

Yes
1. Repair the short to battery voltage in the (N1) Fuel Pump Control Output circuit.
2. Perform PCM VERIFICATION TEST .
No
1. Go To 3).
3) FUEL PUMP MOTOR GROUND CIRCUIT

Fig 2: Probing Fuel Pump Motor Ground Circuit In The Fuel Pump Module Harness Connector
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Fuel Pump Module harness connector.

Using a 12-volt test light to battery voltage, probe the Fuel Pump Motor Ground circuit in the Fuel Pump Module harness connector.

NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

Does the test light illuminate brightly.

Yes
1. Go To 4).
No
1. Repair the Fuel Pump Motor Ground circuit.
2. Perform PCM VERIFICATION TEST .
4) FUEL PUMP MODULE

Fig 3: Measuring Voltage Of The (N1) Fuel Pump Control Output Circuit In The C7 TIPM Harness Connector
Courtesy of CHRYSLER LLC

Connect the C7 TIPM harness connectors.

Ignition on, engine not running.

Using the scan tool under the TIPM Actuators, actuate (Toggle) 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 PCM 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 PCM VERIFICATION TEST .
No
1. Replace the Totally Integrated Power Module per Service Information.
2. Perform PCM VERIFICATION TEST .