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Home >> Isuzu >> 2000 >> Hombre S, 2.2 4, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.2L >> Diagnostic Trouble Code Identification >> DTC P0460: Fuel Level Sensor Circuit >> Diagnostic Procedures

Diagnostic Procedures

  1. Perform On-Board Diagnostic II (OBD-II) system check. See ON-BOARD DIAGNOSTIC II (OBD-II) SYSTEM CHECK in SELF-DIAGNOSTICS - INTRODUCTION article. After performing OBD-II system check, go to next step.
  2. Install Tech 2 scan tool. Using scan tool, observe fuel level. If scan tool displays either zero percent or 100 percent, go to next step. If not, see DIAGNOSTIC AIDS .
  3. Turn ignition off. Disconnect fuel level sensor harness connector. Turn ignition on. Check fuel level using scan tool. If scan tool indicates 100 percent, go to next step. If scan tool does not indicate 100 percent, go to step  5.
  4. Using a jumper wire, connect fuel level sensor ground circuit to signal circuit (Purple wire). Check scan tool display. If scan tool indicates zero percent, go to step  10. If scan tool does not indicate zero percent, go to next step.
  5. Check fuel level sensor circuit (Purple wire) for short to ground. Repair as necessary. After repair, go to step  12. If circuit is okay, go to step  9.
  6. Using a test light connected to battery voltage, probe fuel level sensor ground (Orange/Black wire). If test light comes on, go to next step. If test light does not come on, go to step  8.
  7. Check for open or malfunctioning connections on fuel level sensor signal circuit (Purple wire). Repair as necessary. After repairs, go to step  12. If circuit is okay, go to step  9.
  8. Check for open or malfunctioning connections on fuel level sensor ground circuit (Orange/Black wire). Repair as necessary. After repairs, go to step  12. If circuit is okay, go to step  9.
  9. Replace PCM. Program replacement PCM using appropriate equipment. See PROGRAMMING . After replacing PCM, go to step  12.
  10. Check for open or malfunctioning connections at fuel lever sensor. Repair as necessary. After repair, go to step  12. If connections are okay, go to next step.
  11. Replace fuel level sensor. After replacing fuel level sensor, go to next step.
  12. Using scan tool, select CLEAR INFO or CLEAR DTCS function to clear DTCs. Start engine and allow it to idle. Ensure engine is at normal operating temperature. Operate vehicle within conditions required for setting this DTC. Select SPECIFIC DTC function, then enter DTC P0460. If scan tool indicates TEST RAN AND PASSED, go to next step. If scan tool does not indicate TEST RAN AND PASSED, repeat step  2.
  13. If any other DTCs are set, diagnose DTCs as necessary. If no other DTCs are set, no problem is indicated at this time.
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