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Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Control System L3 With TC) >> No. 27 Fuel Refill Concerns >> Diagnostic procedure
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Diagnostic procedure

DIAGNOSTIC PROCEDURE

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

Non-return valve does not operate properly: 
  • Replace the non-return valve.
3 Verify test results.
  • If normal, return to the diagnostic index to service any additional symptoms.
  • If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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.
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