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Home >> Mitsubishi >> 2003 >> Lancer Evolution >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.0L Turbo >> Diagnostic Tests >> DTC P0461: Fuel Level Sensor Circuit Range/Performance Fuel Gauge Unit Circuit >> Diagnostic Procedure
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Diagnostic Procedure

  1. Check fuel gauge unit harness connector for damage. Repair or replace as necessary. After repairs, go to step  2 . If connector is in good condition, go to step  5 .
    CAUTION: To prevent damage to scan tool, always turn ignition switch to LOCK position before connecting or disconnecting scan tool.
  2. Using scan tool, check fuel level sensor. Connect scan tool to data link connector. Turn ignition on. Read the DTC. Turn ignition switch to LOCK position. If DTC P2066 is set, go to next step, otherwise go to step  4 .
    3. NOTE: Check harness after checking intermediate connector C-113, C-122 and D-34. If damaged, then repair, then go to step  7 .
  3. Check for short circuit to ground between ECM connector C-115 (terminal No. 74) and fuel level sensor (sub) connector D-10 (terminal No. 1). If harness is in good condition, then see appropriate Equipment Diagnosis, otherwise go to step  8 .
  4. Check for short circuit to ground between ECM connector C-119 (terminal No. 46) and fuel pump and level sensor (main) connector D-12 (terminal No. 2). If harness is in good condition, go to appropriate GAUGES & INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT, otherwise, repair it, then go to step  8 .
  5. Check connector C-119 at ECM for damage. If connector is in good condition, then see go to next step, otherwise repair or replace, then go to step  8 .
  6. Check for open circuit or harness damage between ECM connector C-119 (terminal No. 74) and fuel pump and level sensor (main) connector D-12 (terminal No. 2). If harness wire is in good condition, go to next step, otherwise, repair, then go to step  8 .
  7. Retest system. Carry out a test drive with the drive cycle pattern. See OTHER MONITOR  . Check DTC. If DTC P0461 set, then replace ECM, then go to next step, otherwise it can be assumed that this malfunction is intermittent, see INTERMITTENTS in TROUBLE SHOOTING - NO CODES - LANCER TURBO article.
  8. Perform the OBD-II drive cycle. Carry out a test drive with the drive cycle pattern. See OTHER MONITOR  . Check DTC. If DTC P0461 set, then repeat troubleshooting, otherwise procedure is complete.
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