Diagnostic Procedures
WARNING: This page is about a different car, the 2003 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.
- If QUICK TEST was not performed, go to QUICK TEST under SELF-DIAGNOSTIC SYSTEM. If QUICK TEST was performed, go to next step.
- Check For Missing Or Leaking Fuel Filler Cap - Check for missing or loose fuel filler cap. Check for possible cross-threaded fuel filler cap. If a concern is present, repair or replace as necessary. After repair, go to next step. If a concern is not present, go to step 4.
- EVAP System Leak Test - Perform EVAP system leak test. Refer to EVAPORATIVE EMISSIONS SYSTEM LEAK TEST under FUEL EVAPORATIVE SYSTEM under EMISSION SYSTEMS & SUB-SYSTEMS in SYSTEM & COMPONENT TESTING - B2300, B3000, B4000 & TRIBUTE article. If test result is okay, go to next step. If test result is not okay, go to DTC P0455 OR DTC P1443 trouble shooting.
- Drive Cycle - Reconnect all disconnected connectors. Clear DTCs from PCM memory using scan tool generic OBD-II function. Perform EVAP System Monitor Drive Cycle. Refer to EVAP RUNNING LOSS SYSTEM REPAIR VERIFICATION DRIVE CYCLE under MONITOR REPAIR VERIFICATION DRIVE CYCLES. Retrieve pending code. If DTC P0455 and P0457 are not present, go to next step. If DTC P0455 and P0457 are still present, go to DTC P0455 OR DTC P1443 trouble shooting.
- Verify Trouble Shooting Of DTCs Completed - Perform PCM Quick Test. If any DTC is present, go to applicable procedure for other DTCs. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no DTCs are set, trouble shooting is complete. Advise customer that it is important and necessary to tighten fuel filler cap after refueling.