Diagnostic Test

1) DTC IS ACTIVE
Start the engine and allow it to reach normal operating temperature.

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

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) (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE

Fig 1: Measuring Voltage Of (N4) Fuel Level Signal 1 Circuit In Fuel Level Sensor 1 Harness Connector
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Fuel Level Sensor connector.

Disconnect the Instrument Cluster (CCN) connector.

Turn the ignition on.

Measure the voltage of the (N4) Fuel Level Signal 1 circuit in the Fuel Level Sensor harness connector.

Is there any voltage present?

Yes
1. Repair the (N4) Fuel Level Signal 1 circuit for a short to voltage.
2. Perform PCM VERIFICATION TEST .
No
1. Go to 3).
3) (N4) FUEL LEVEL SIGNAL 1 OPEN OR HIGH RESISTANCE

Fig 2: Checking Fuel Level Signal 1 Circuit For Open Or High Resistance
Courtesy of CHRYSLER LLC

Turn the ignition off.

Measure the resistance of the (N4) Fuel Level Signal 1 circuit between the Fuel Level Sensor harness connector and the Instrument Cluster (CCN) harness connector.

Is the resistance below 5.0 ohms?

Yes
1. Go to 4).
No
1. Repair the (N4) Fuel Level Signal 1 circuit for an open circuit or high resistance.
2. Perform PCM VERIFICATION TEST .
4) (Z965) GROUND CIRCUIT OPEN OR HIGH RESISTANCE

Fig 3: Measuring Resistance Between Ground And (Z965) Ground Circuit In Fuel Pump Module Harness Connector
Courtesy of CHRYSLER LLC

Measure the resistance between ground and the (Z965) Ground circuit in the Fuel Level Sensor harness connector.

Is the resistance below 5.0 ohms?

Yes
1. Go to 5).
No
1. Repair the (Z965) Ground circuit for an open circuit or high resistance.
2. Perform PCM VERIFICATION TEST .
5) FUEL LEVEL SENSOR

Fig 4: Locating Ground And Fuel Level Signal 1 Circuits In Fuel Pump Module Harness Connector
Courtesy of CHRYSLER LLC

Turn the ignition off.

Connect the Instrument Cluster (CCN) connector.

Connect a jumper wire between the (N4) Fuel Level Signal 1 circuit and the (Z965) Ground in the Fuel Level Sensor harness connector.

Turn the ignition on.

With the scan tool, read the Fuel Level Sensor 1 signal voltage.

Is the voltage below 1.0 volt with the jumper wire in place?

Yes
1. Replace the Fuel Level Sensor in accordance with the Service Information.
2. Perform PCM VERIFICATION TEST .
No
1. Go to 6).
6) INSTRUMENT CLUSTER (CCN)
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Level Sensor and the Instrument Cluster (CCN).

Look for any chafed, pierced, pinched, or partially broken wires.

Look for broken, bent, pushed out or corroded terminals.

Refer to any Technical Service Bulletins that may apply.

Were any problems found?

Yes
1. Repair as necessary.
2. Perform PCM VERIFICATION TEST .
No
1. Replace and program the Instrument Cluster (CCN) in accordance with the Service Information.
2. Perform PCM VERIFICATION TEST .