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Home >> Chrysler >> 2007 >> Sebring Base, 2.4 K >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P1572 To P2110 - NGC >> P2066-Fuel Level Sensor 2 Performance >> Diagnostic Test

Diagnostic Test

  1. 1) DTC IS ACTIVE 

    Turn the ignition on.

    NOTE: Diagnose and repair any Can bus or communication DTCs before proceeding with this test.

    With the scan tool, select View DTCs and review the DTC environmental information.

    Is the good trip counter greater than 0? 

    Yes 

    1. The DTC is not active at this time. Refer to *CHECKING FOR AN INTERMITTENT DTC diagnostic procedure.

    No 

    1. Go to step  2).
  2. 2) EXTERIOR FUEL TANK DAMAGE 

    Inspect the exterior of the fuel tank for any damage that may restrict the movement of the fuel level sensor floats.

    Were any problems found? 

    Yes 

    1. Replace the fuel tank as necessary.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go to step  3).
  3. 3) FUEL PUMP MODULE WIRING AND CONNECTORS 

    Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Pump Module harness connector and the Body Control Module (BCM).

    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 BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go to step  4).
  4. 4) (N5) FUEL LEVEL SIGNAL 2 CIRCUIT VOLTAGE 

    Turn the ignition off.

    Disconnect the C2 Fuel Pump Module harness connector.

    Turn the ignition on.

    With the scan tool, read the Fuel Level Sensor 2 circuit voltage.

    NOTE: The sensor voltage should be approximately 5.0 volts (plus or minus.1 volt) with connector disconnected.

    Turn the ignition off.

    Connect a jumper wire between ground and the (N5) Fuel Level Signal 2 circuit in the C2 Fuel Pump Module harness connector.

    Turn the ignition on.

    With the scan tool, read the Fuel Level Sensor 2 circuit voltage.

    NOTE: The sensor voltage should be approximately 0.0 volts (plus or minus.1 volt) with the jumper wire in place.

    Does the scan tool display the voltage as described above? 

    Yes 

    1. Go to step  5).

    No 

    1. Go to step  12).
  5. 5) (N4) FUEL LEVEL SIGNAL 1 CIRCUIT VOLTAGE 

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

    NOTE: The sensor voltage should be approximately 5.0 volts (plus or minus.1 volt) with connector disconnected.

    Turn the ignition off.

    Connect a jumper wire between ground and the (N4) Fuel Level Signal 1 circuit in the C1 Fuel Pump Module harness connector.

    Turn the ignition on.

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

    NOTE: The sensor voltage should be approximately 0.0 volts (plus or minus.1 volt) with the jumper wire in place.

    Does the scan tool display the voltage as described above? 

    Yes 

    1. Go to step  6).

    No 

    1. Go to step  15).
  6. 6) (Z913) GROUND CIRCUIT OPEN OR HIGH RESISTANCE 

    Turn the ignition off.

    Using a 12 volt test light connected to 12 volts, check the (Z913) Ground circuit in the C2 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.

    Is the test light illuminated and bright? 

    Yes 

    1. Go to step  7).

    No 

    1. Repair the open or high resistance in the (Z913) Ground circuit.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  7. 7) (Z911) GROUND CIRCUIT OPEN OR HIGH RESISTANCE 

    Using a 12 volt test light connected to 12 volts, check the (Z911) Ground circuit in the C1 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.

    Is the test light illuminated and bright? 

    Yes 

    1. Go to step  8).

    No 

    1. Repair the open or high resistance in the (Z911) Ground circuit.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  8. 8) FUEL TANK WIRING HARNESS INSPECTION 
    WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting or line, the fuel system pressure must be released. Failure to follow these instructions can result in personal injury or death.

    Remove the fuel tank in accordance with the Service Information.

    Inspect the wiring and connectors between the C1 and C2 Fuel Pump Module harness connectors.

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

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

    Were any problems found? 

    Yes 

    1. Repair as necessary.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go to step  9).
  9. 9) FUEL LEVEL SENSOR 1 INSPECTION 

    Remove Fuel Level Sensor 1.

    Inspect Fuel Level Sensor 1 and the inside of the fuel tank for any condition that would restrict the movement of the fuel level sensor float.

    Were any problems found? 

    Yes 

    1. Repair or replace the fuel tank components as necessary.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go to step  10).
  10. 10) FUEL LEVEL SENSOR 1 RESISTANCE 

    Move the Fuel Level Sensor 1 float to its lowest point of travel.

    Measure the resistance between the terminals of Fuel Level Sensor 1.

    NOTE: The resistance should be approximately 220 ohms with the float at its lowest point of travel (empty).

    Move the Fuel Level Sensor 1 float to its highest point of travel.

    Measure the resistance between the terminals of Fuel Level Sensor 1.

    NOTE: The resistance should be approximately 20 ohms with the float at its highest point of travel (full).

    Is the resistance of the sensor within the values described above? 

    Yes 

    1. Go to step  11).

    No 

    1. Replace Fuel Level Sensor 1.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  11. 11) FUEL LEVEL SENSOR 2 INSPECTION 

    Remove Fuel Level Sensor 2 sensor.

    Inspect Fuel Level Sensor 2 and the inside of the fuel tank for any condition that would restrict the movement of the fuel level sensor float.

    Were any problems found? 

    Yes 

    1. Repair or replace the fuel tank components as necessary.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Replace Fuel Level Sensor 2.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  12. 12) (N5) FUEL LEVEL SIGNAL 2 CIRCUIT SHORTED TO VOLTAGE 

    Turn the ignition off.

    Disconnect the C2 TIPM harness connector.

    Turn the ignition on.

    Measure the voltage of the (N5) Fuel Level Signal 2 circuit in the Fuel Level Sensor 2 harness connector.

    Is there any voltage present? 

    Yes 

    1. Repair the short to voltage in the (N5) Fuel Level Signal 2 circuit.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go to step  13).
  13. 13) (N5) FUEL LEVEL SIGNAL 2 CIRCUIT SHORTED TO GROUND 

    Turn the ignition off.

    Measure the resistance between ground and the (N5) Fuel Level Signal 2 circuit in the Fuel Level Sensor 2 harness connector.

    Is the resistance above 100 ohms? 

    Yes 

    1. Go to step  14).

    No 

    1. Repair the short to ground in the (N5) Fuel Level Signal 2 circuit.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  14. 14) (N5) FUEL LEVEL SIGNAL 2 CIRCUIT OPEN OR HIGH RESISTANCE 

    Measure the resistance of the (N5) Fuel Level Signal 2 circuit between the Fuel Level Sensor 2 harness connector and the C7 TIPM harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go to step  18).

    No 

    1. Repair the open or high resistance in the (N5) Fuel Level Signal 2 circuit.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  15. 15) (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE 

    Turn the ignition off.

    Disconnect the C7 TIPM harness connector.

    Turn the ignition on.

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

    Is there any voltage present? 

    Yes 

    1. Repair the short to voltage in the (N4) Fuel Level Signal 1 circuit.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go to step  16).
  16. 16) (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO GROUND 

    Turn the ignition off.

    Measure the resistance between ground and the (N4) Fuel Level Signal 1 circuit in the Fuel Level Sensor 1 harness connector.

    Is the resistance above 100 ohms? 

    Yes 

    1. Go to step  17).

    No 

    1. Repair the short to ground in the (N4) Fuel Level Signal 1 circuit.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  17. 17) (N4) FUEL LEVEL SIGNAL 1 CIRCUIT OPEN OR HIGH RESISTANCE 

    Measure the resistance of the (N4) Fuel Level Signal 1 circuit between the Fuel Level Sensor 1 harness connector and the C7 TIPM harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go to step  18).

    No 

    1. Repair the open or high resistance in the (N4) Fuel Level Signal 1 circuit.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  18. 18) TOTALLY INTEGRATED POWER MODULE (TIPM) 

    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).

    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 BODY VERIFICATION TEST - VER 1 .

    No 

    1. Replace the Body Control Module (BCM) in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1 .
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