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 MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 334 (SYMPTOM TROUBLESHOOTING (ENGINE CONTROL SYSTEM AJ))ENGINE CONTROL SYSTEM OPERATION INSPECTIONELECTRONIC THROTTLE CONTROL INSPECTIONENGINE COOLANT TEMPERATURE COMPENSATION INSPECTION
2010 Mazda 5 Sport, 2.3 L, Standard
Engine coolant temperature compensation inspection
2010 Mazda 5 Sport, 2.3 L, StandardSECTION Engine coolant temperature compensation inspection
WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- Connect the WDS or equivalent to the DLC-2.
- Select the PID/DATA MONITOR AND RECORD function on the WDS or equivalent display.
- Select the following PIDs.
- ECT
- IAT
- RPM
- Verify that the engine is in cold condition, then start the engine.
- Verify that the engine speed decreases as the engine warm-up.
- If the engine speed does not decrease or decreases slowly, inspect the following:
- ECT sensor and related harness (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION .)
- Throttle body and related harness (See THROTTLE ACTUATOR INSPECTION .) (See THROTTLE POSITION (TP) SENSOR INSPECTION .)
- If the engine speed does not decrease or decreases slowly, inspect the following:
RENDER: 1.0x
NO RELATED
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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.