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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R Spec V >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Engine Controls - Self-Diagnostics - 2.2L) >> Diagnostic Tests >> DTC P0463: Fuel Level Sensor Circuit - High Input >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Isuzu Rodeo Sport and 2002 Isuzu Rodeo. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform ON-BOARD DIAGNOSTIC II SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing OBD-II system check, go to next step.
  2. Turn ignition on. On scan tool observe FUEL LEVEL parameter. If parameter is 99-100 percent, go to step  4 . If parameter is not as specified, 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 WIRING DIAGRAMS article. If reading is 2.9 volts or more, go to next step. If reading is less than 2.9 volts, go to step  6 .
  5. Check for open in fuel level sensor ground circuit. If problem is found, go to step  7 . If no problem was found, go to next step.
  6. Check for open 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 WIRING DIAGRAMS article. After repair, go to step  11 .
  8. Locate and repair short to voltage in fuel level sensor output circuit. After repair, go to step  11 .
  9. Repair open in fuel level sensor ground. See WIRING DIAGRAMS article. After repair, go to step  11 .
  10. Replace and reprogram PCM. See POWERTRAIN CONTROL MODULE REPLACEMENT  under POWERTRAIN CONTROL MODULE. After repair is complete, go to next step.
  11. Using scan tool, select DTC and clear DTC information. Start engine and idle to normal operating temperature of 167-203°F (75-95°C). Select specified DTC INFO for DTC set. Operate vehicle within CODE ENABLE CRITERIA  . If scan tool indicates DTC P0463 RAN AND PASSED, system is okay. If scan tool does not indicate system RAN AND PASSED, repeat test starting in step  2 .
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