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
Electronic Control Throttle Operation Inspection
- Connect the M-MDS to the DLC-2.
- Perform the KOEO or KOER self test. (Refer to DTC INSPECTION in troubleshooting information.)
- Verify that none of the following PCM DTCs are displayed:
- P0122:00, P0123:00, P0222:00, P0223:00, P0638:00, P2101:00, P2107:00, P2109:00, P2110:00, P2112:00, P2119:00, P2122:00, P2123:00, P2127:00, P2128:00, P2135:00 and P2138:00
- If any one DTC is displayed, perform the DTC inspection. (Refer to DTC TABLE [PCM (SKYACTIV-G 2.5T)] in troubleshooting information.)
- P0122:00, P0123:00, P0222:00, P0223:00, P0638:00, P2101:00, P2107:00, P2109:00, P2110:00, P2112:00, P2119:00, P2122:00, P2123:00, P2127:00, P2128:00, P2135:00 and P2138:00
- Access the following PIDs using the M-MDS. (Refer to [PID/DATA MONITOR INSPECTION
] in troubleshooting information.)
- THRO_ANG_ACT
- THRO_ANG_COMD
- With the accelerator pedal not depressed and with it depressed to the floor, verify that the data monitor item [THRO_ANG_ACT] value changes in conjunction with the [THRO_ANG_COMD] value.
- If this change cannot be verified, perform the Resistance Inspection for the throttle body. (See THROTTLE BODY INSPECTION [SKYACTIV-G 2.5T] .)
Factory Service Tools
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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.