ECT Sensor No.2

WARNING: This page is about a different car, the 2013 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

Remove the ECT sensor No.2. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION ).
Place the ECT sensor No.2 in water with a thermometer, and heat the water gradually.

Fig 1: Measuring ECT Sensor No.1 Temperature Using Thermometer
Measure the resistance between ECT sensor No.2 terminals A and B.
- If not as specified, replace the ECT sensor No.2. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION ).

RESISTANCE SPECIFICATION

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

Fig 2: Identifying ECT Sensor No.2 Connector Terminals

Fig 3: ECT Sensor No.2 Resistance Versus Temperature Graph