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Home >> Isuzu >> 2001 >> Rodeo S, 2.2 D, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.2L >> Diagnostic Tests >> DTC P0463: Fuel Level Sensor High Input >> Diagnostic Procedures
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Diagnostic Procedures

  1. Perform OBD-II system check. See ON-BOARD DIAGNOSTIC II (OBD-II) SYSTEM CHECK  . After performing OBD-II system check, go to next step.
  2. Turn ignition on. Observe fuel level reading on scan tool. If reading displayed is 99-100 percent, go to step  4 . If scan tool is reading is not 99-100 percent, go to next step.
  3. Test fuel gauge operation. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.
  4. Turn ignition off. Using DVOM, backprobe fuel level sensor input at sensor input cavity. See Figure . If reading is greater than 2.9 volts, go to next step. If reading is 2.9 volts or less, go to step  6 .
  5. Check for open circuit in fuel level sensor ground circuit. If an open circuit is found, go to step  7 . If no problem was found, go to next step.
  6. Check for open circuit in fuel level sensor ground. If a problem was found, go to step  9 . If no problem was found, go to step  10 .
  7. Locate and repair short to voltage in fuel level input circuit. See Figure . Go to step  11 .
  8. Locate and repair short to voltage in fuel level sensor output circuit. Go to step  11 .
  9. Repair open in fuel level sensor ground. See Figure . Go to step  11 .
  10. Replace and reprogram PCM using required equipment. See PROGRAMMING  . Go to next step.
  11. Using scan tool, select DTC and clear DTC information. Start engine and idle to normal operating temperature. Select specified DTC INFO for DTC set. Operate vehicle within conditions for setting DTC P0463. If scan tool indicates diagnostic RAN AND PASSED, system is okay. If DTC does not indicate system RAN AND PASSED, go back to step  2 .
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