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Home >> Mazda >> 2005 >> 6 i, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting (Engine Control System L3) >> No. 27 Fuel Refill Concerns >> Diagnostic procedure

Diagnostic procedure

NO. 27 FUEL REFILL CONCERNS DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 Connect WDS or equivalent to DLC-2.
Turn ignition switch to ON position (Engine off).
Retrieve any DTCs.
Are there any DTCs displayed?		 Yes DTC is displayed: 
Go to appropriate DTC test.
No No DTC is displayed: 
Go to the next step.
2 Remove fuel-filler pipe.
Make sure nonreturn valve is installed properly.
Inspect nonreturn valve operation.
Is nonreturn valve normal?		 Yes Inspect for the following:
  • Improper use of fuel nozzle
  • Inadequate fuel filling speed
No Nonreturn valve is installed improperly: 
  • Reinstall nonreturn valve to proper position.

Nonreturn valve does not operate properly: 
  • Replace nonreturn valve.
3 Verify test results.
  • If okay, return to diagnostic index to service any additional symptoms.
  • If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
    • If vehicle is repaired, troubleshooting completed.
    • If vehicle is not repaired or additional diagnostic information is not available, reprogram PCM if later calibration is available. Retest.
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