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Diagnostic procedure

NO. 27 FUEL REFILL CONCERNS DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY PCM DTC
Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No Go to the next step.
2 INSPECT EVAPORATIVE SYSTEM HOSES FOR RESTRICTION
  • Inspect for restriction in the evaporative system hoses.
  • Is there any malfunction?
Yes Repair or replace the malfunctioning part according to the inspection results.
No Go to the next step.
3 DETERMINE IF MALFUNCTION CAUSE IS NONRETURN VALVE OR OTHER
  • Remove the fuel-filler pipe.
  • Make sure nonreturn valve is installed properly.
  • Inspect the nonreturn valve operation.
  • Is there any malfunction?
Yes Replace the fuel tank.
(See FUEL TANK REMOVAL/INSTALLATION .)
No Inspect the following:
  • Improper use of fuel nozzle
  • Inadequate fuel filling speed

Repair or replace the malfunctioning part according to the inspection results.
4 Verify test results.
  • If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX .)
  • If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
  • If the vehicle is repaired, troubleshooting is completed.
    • If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.