Mazda CX-5 Service & Repair Manual: Engine Coolant Temperature (ECT) Sensor Inspection

Mazda CX-5 Service & Repair Manual / Engine / Cooling / Engine Coolant Temperature (ECT) Sensor Inspection

Resistance Inspection

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

1. Remove the ECT sensor No.1..

2. Place the ECT sensor No.1 in water with a thermometer, and heat the water gradually.

3. Measure the resistance between ECT sensor No.1 terminals A and B.

If not as specified, replace the ECT sensor No.1..

Specification


ECT (°C {°F})	Resistance (Kilohms)
20 {68}	Approx. 2.45
80 {176}	Approx. 0.318

ECT Sensor No.2

1. Remove the ECT sensor No.2..

2. Place the ECT sensor No.2 in water with a thermometer, and heat the water gradually.

3. Measure the resistance between ECT sensor No.2 terminals A and B.

If not as specified, replace the ECT sensor No.2..

Specification


ECT (°C {°F})	Resistance (Kilohms)
20 {68}	Approx. 2.45
80 {176}	Approx. 0.318

Engine Coolant Replacement

WARNING: Never remove the cooling system cap or loosen the radiator drain plug while the engine is running, or when the engine and radiator are hot. Scalding engine coolant and steam may ...

Engine Coolant Temperature (ECT) Sensor Removal/Installation

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 1. Disconnect the negative battery c ...

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