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.
2014 Mazda 3 SV, Automatic TransFACTORY OEM SERVICE PROCEDURE
ECT Sensor No. 2
- Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
- Lift up the vehicle.
- Remove the front under cover No. 1. (See FRONT UNDER COVER NO. 1 REMOVAL/INSTALLATION .)
- Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
- Disconnect the ECT sensor No. 2 connector.
- Remove the ECT sensor No. 2 using the SST .
- Install in the reverse order of removal.
- Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
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.
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