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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 P0462: Fuel Level Sensor Low 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 0-1 percent, go to step  4 . If scan tool does not indicate 0-1 percent, go to next step.
  3. Test fuel gauge operation. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.
  4. Using DVOM, backprobe Orange/Green wire at fuel level sensor harness connector. If reading is less than .13 volt, go to next step. If reading is .13 volt or greater, go to step  6 .
  5. Check for an open circuit in Orange/Green wire between PCM harness connector terminal B5 and fuel level sensor harness connector. See Figure and Figure . If an open circuit was found, go to step  7 . If no problem was found, go to next step.
  6. Using DVOM connected to ground, backprobe fuel level sensor output terminal of fuel level sensor. See Figure . If reading is greater than 2.9 volts, go to step  9 . If reading is 2.9 volts or less, go to step  10 .
  7. Repair open circuit in Orange/Green wire between PCM harness connector terminal B5 and fuel level sensor harness connector. See Figure and Figure . Go to step  11 .
  8. Repair open in fuel level sensor output circuit. Go to step  11 .
  9. Repair short to voltage in fuel level output circuit. 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 at normal operating temperature. Select specified DTC INFO for DTC set. Operate vehicle within conditions for setting DTC P0462. 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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