Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 48 (ENGINE CONTROLS - SELF-DIAGNOSTICS)DRIVE CYCLE PROCEDURESOBD-II DRIVE CYCLEOBD-II DRIVE CYCLE PROCEDURE
1999 Mazda 626 ES, 2.5 D, Standard
OBD-II Drive Cycle Procedure
1999 Mazda 626 ES, 2.5 D, StandardSECTION OBD-II Drive Cycle Procedure
WARNING: This page is about a different car, the 2002 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Once drive cycle is started, engine must not be turned off.
- Start engine and drive vehicle. Drive vehicle in stop and go traffic for at least 20 minutes with at least 4 idle periods. Drive vehicle on an expressway for 10-15 minutes. Access and monitor IAT PID during expressway drive. Heavy accelerations, sudden accelerations or wide open throttle applications are not recommended.
- If IAT PID is less than 40°F (4°C) at any time during expressway drive, the Evaporative Emission Monitor will not complete. Access On-Board System Readiness menu to check completion status. Rerun Continuous Memory self-test to check DTC P1000 status. If Evaporative Emission Monitor is the only monitor not showing completion and DTC P1000 has been cleared, OBD-II drive cycle has been completed.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.