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 MANUALSMAZDA1999PROTEGE ES, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONOBD-II DRIVE CYCLESDRIVE CYCLES2002-03: PROTEGE, PROTEGE5OBD-II DRIVE MODE DESCRIPTION
1999 Mazda Protege ES, Automatic
OBD-II Drive Mode Description
1999 Mazda Protege ES, AutomaticSECTION OBD-II Drive Mode Description
OBD-II drive mode is performed to inspect proper operation and ensure no additional DTCs are present. During drive mode, following OBD-II systems are inspected:
- EGR system.
- HO2S and HO2S heater.
- Three-way Catalytic (TWC) converter.
- Fuel, misfire and evaporative (EVAP) system.
NOTE:
DO NOT disconnect battery during and after drive mode. Disconnecting battery will reset memory. If OBD-II system inspection is not completed during drive mode, OBD-II system detects malfunction or drive mode procedure has not been completed correctly.
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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.