LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 151 (2.4L - DTCS P0443 To P1618) >> DTC Troubleshooting >> P0461-Fuel Level Sensor 1 Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    NOTE:

    Diagnose and repair any Can bus, communication or implausible signal DTCs before proceeding with this test.

    NOTE:

    Diagnose P0462 or P0463 first, if set along with P0461.

    1. Start the engine.
    2. Allow the engine to reach normal operating temperature.
    3. With the scan tool, read DTCs.
      NOTE:

      It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data.

      Is the DTC Active or Pending at this time?

      Yes 

      • Go To  2

      No 

  2. VISUALLY INSPECT FUEL TANK 
    1. Visually inspect the Fuel Tank for damage that may restrict the Fuel Sending Unit float from moving.

      Is the Fuel Tank OK?

      Yes 

      • Go To  3

      No 

  3. FUEL LEVEL SENSOR CIRCUIT DTCS SET IN THE BCM 

    Are any Fuel Level Sensor Circuit DTCs set in the BCM?

    Yes 

    No 

    • Go To  4
  4. CHECK FOR EXCESSIVE RESISTANCE IN THE (N4) FUEL LEVEL SIGNAL 1 CIRCUIT 
    1. Disconnect the Fuel Pump Module C1 harness connector.
    2. Disconnect the BCM E harness connector.
    3. Measure the resistance of the (N4) Fuel Level Signal 1 circuit from the Fuel Pump Module C1 harness connector to the BCM E harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      • Repair the open in the (N4) Fuel Level Signal 1 circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST

      No 

      • Go To  5
  5. CHECK FOR EXCESSIVE RESISTANCE IN THE (G109) FUEL LEVEL SENSE RETURN CIRCUIT 
    1. Measure the resistance of the (G109) Fuel Level Signal Sense Return circuit from the Fuel Pump Module C1 harness connector to the BCM E harness connector.

      Is the resistance above 5.0 Ohms?

      Yes 

      • Repair the open in the (G109) Fuel Level Signal Sense Return circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST

      No 

      • Go To  6
  6. INTERNAL INSPECTION OF THE FUEL TANK 
    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 possible serious or fatal injury.

    1. Remove the Fuel Tank in accordance with the service information. Refer to TANK, FUEL, REMOVAL .
    2. Remove the Fuel Pump Module. Refer to MODULE, FUEL PUMP, REMOVAL .
    3. Visually inspect the inside of the Fuel Tank for any obstructions or deformities.
    4. Inspect the Fuel Pump Module Float arm for damage.

      Were any problems found?

      Yes 

      No 

      • Go To  7
  7. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Body Control Module (BCM) 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 Sensor and Powertrain Control Module connectors.
    4. Perform any Technical Service Bulletins that may apply.

      Were there any problems found?

      Yes 

      No