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DIAGNOSTIC PROCEDURE NO.28 FUEL FILLING SHUT OFF CONCERNS (MZI-3.7) DIAGNOSTIC PROCEDURE POSSIBLE CAUSE fuel. Fuel line spills and leakage are dangerous. Fuel can ignite and (See BEFORE SERVICE PRECAUTION [MZI-3.7] .) (See AFTER SERVICE PRECAUTION [MZI-3.7] .) CAUTION: Disconnecting/connecting quick release connector without cleaning it STEP INSPECTION ACTION 1 Connect the M-MDS to the DLC-2. Yes DTC is displayed: No No DTC is displayed: Go to the next step. 2 Remove the fuel-filler pipe. Yes Inspect for the following: Improper use of fuel nozzle Fuel is not inserted correctly. Inspect fuel shut-off valve. No Nonreturn valve is installed improperly: Reinstall the nonreturn valve to proper position.
Nonreturn valve does not operate properly:
Replace the nonreturn valve. Verify test results. If normal, return to diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [MZI-3.7].)
2008 Mazda CX-9 Grand Touring 2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
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