LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Isuzu >> 1997 >> Hombre S, 2.2 4, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.2L >> Circuit Testing >> DTC P0460 - Fuel Level Sensor Circuit >> Diagnostic Procedures
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnostic Procedures

  1. Perform On-Board Diagnostic (OBD) System Check. After performing OBD system check, go to next step.
  2. 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 buffer module connector. Turn ignition on. Check fuel level using scan tool. If scan tool indicates zero percent, go to next step. If not, go to step 6).
  4. Using a jumper wire, jumper fuel buffer module 5-volt reference circuit to signal circuit. Check scan tool display. If scan tool indicates 100 percent, go to next step. If not, go to step 8).
  5. Using a test light connected to battery voltage, probe fuel buffer module sensor ground. If test light illuminates, diagnose instrument cluster. If test light does not illuminate, go to step 7).
  6. Check fuel buffer module sensor signal circuit for short to voltage. Repair as necessary. After repairs, go to step 12). If circuit is okay, go to step 11).
  7. Check for open or malfunctioning connections on fuel buffer module sensor ground circuit. Repair as necessary. After repairs, go to step 12). If circuit is okay, go to step 11).
  8. With test light connected to battery voltage, probe fuel buffer module sensor signal circuit. If scan tool indicates 100 percent value, go to next step. If not, go to step 10).
  9. Check for open or malfunctioning connections on fuel buffer module sensor 5-volt reference circuit. Repair as necessary. After repairs, go to step 12). If circuit is okay, go to step 11).
  10. Check for open or malfunctioning connections on fuel buffer module sensor signal circuit. Repair circuit as necessary. After repairs, go to step 12). If circuit is okay, go to next step.
  11. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, 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.
scientia non olet · About LEMON Manuals