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 194 (ENGINE CONTROL SYSTEM)PCM INSPECTIONPCM INSPECTION USING THE SST (WDS OR EQUIVALENT)NOTES
1999 Mazda 626 ES, 2.5 D, Standard
PCM Inspection Using the SST (WDS or equivalent): Notes
1999 Mazda 626 ES, 2.5 D, StandardSECTION Notes
WARNING: This page is about a different car, the 2004 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- PIDs for the following parts are not available on this model. Go to the appropriate part inspection page.
- CMP sensor (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION .)
- Main relay (See RELAY INSPECTION .)
- Connect the WDS or equivalent to the DLC-2. (See ON-BOARD DIAGNOSTIC TEST .)
- Turn the ignition switch to ON.
- Measure the value.
- If the value is not within the specification, follow the instructions in Action column.
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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.