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.
2011 Mazda 2 L4-1.5LFACTORY OEM SERVICE PROCEDURE
Engine Temperature Sensor: Service and Repair
ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [MZR 1.5]
WARNING:
- When the engine is hot, it can badly burn. Turn off the engine and wait until it is cool before removing the ECT sensor.
ECT Sensor No.1 Removal/Installation
1. Disconnect the negative battery cable.
2. Drain the engine coolant. Service and Repair
3. Remove the battery. Removal and Replacement
4. Disconnect the ECT sensor No.1 connector.
5. Remove the ECT sensor No.1 using the SST.
6. Install in the reverse order of removal.
7. Refill the engine coolant. Service and Repair
ECT Sensor No.2 Removal/Installation
1. Disconnect the negative battery cable.
2. Drain the engine coolant. Service and Repair
3. Disconnect the ECT sensor No.2 connector.
4. Remove the ECT sensor No.2 using the SST.
5. Install in the reverse order of removal.
6. Refill the engine coolant. Service and Repair
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.
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