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.
2024 Mazda 3 Preferred, 4D HatchbackFACTORY OEM SERVICE PROCEDURE
PID/data Monitor Inspection
- Connect the M-MDS to the DLC-2.
- Switch the ignition ON (engine off).
- Display PID EGRP_ACT and simulation item SEGRP_DSD using the M-MDS. (See PCM INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION)] .)
- Verify that the PID EGRP_ACT value conforms to the simulation item SEGRP_DSD value when the EGR valve opening angle (simulation item: SEGRP_DSD) is driven using the simulation function.
- If it cannot be verified, perform the voltage inspection. (See VOLTAGE INSPECTION .)
Factory Service Tools
Use the Manual With the Right Hardware
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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.