LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2002 >> Neon R/T >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0460: Fuel Level Unit No Change Over Miles >> Testing

DTC P0460: Fuel Level Unit No Change Over Miles: Testing

NOTE: Diagnose DTC P0462 or P0463 first, if set along with DTC P0460. See DTC P0462: FUEL LEVEL SENDING UNIT VOLTAGE TOO LOW & DTC P0463: FUEL LEVEL SENDING UNIT VOLTAGE TOO HIGH  . Inspect the fuel pump module harness connector for any corrosion or damage.
  1. Turn the ignition on. With the DRBIII(R), read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, go to step  8 .
  2. Visually inspect the fuel tank for damage that may restrict the fuel sending unit float from moving. Is the fuel tank okay? If yes, go to next step. If no, repair or replace the fuel tank as necessary.
  3. Turn the ignition off. Disconnect the fuel pump module harness connector. Measure the resistance between ground and the fuel level sensor signal circuit in the fuel pump module harness connector. Is the resistance less than 100 ohms? If yes, repair the fuel level sensor signal circuit for a short to ground. If no, go to next step.
  4. Turn the ignition off. Disconnect the instrument cluster harness connector. Measure the resistance of the fuel level sensor signal circuit between the fuel pump module harness connector and the instrument cluster harness connector. Is the resistance less than 5.0 ohms? If yes, go to next step. If no, repair the fuel level sensor signal circuit for an open.
  5. Reconnect the instrument cluster harness connector. Measure the resistance between ground and the ground circuit in the fuel pump module harness connector. Is the resistance less than 5.0 ohms? If yes, go to next step. If no, repair the ground circuit for an open.
    6. WARNING: The fuel system is under constant pressure even with the engine off. Before opening the fuel system, the fuel pressure must be released.
  6. Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE  . Remove the fuel tank. Remove the fuel pump module. Visually inspect the inside of the fuel tank for obstructions or deformities. Inspect fuel pump module float arm for damage. Were any problems found? If yes, repair as necessary. If no, go to next step.
  7. There are no possible causes remaining, replace fuel level sensor.
    8. WARNING: When the engine is operating, DO NOT stand in a direct line with the fan. DO NOT put your hands near the pulleys, belts or fan. DO NOT wear loose clothing.
  8. Conditions that set DTC are not present at this time. The following list may help in identifying the intermittent condition:
    • With the engine running at normal operating temperature, monitor the DRBIII(R) parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set.
    • Review the DRBIII(R) Freeze Frame information to identify under what conditions the DTC set.
    • Refer to any Technical Service Bulletin (TSB) that may apply.
    • Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
    • Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

      Were any of the above conditions present? If yes, repair as necessary. If no, test is complete.

scientia non olet · About LEMON Manuals