Resistance inspection
WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
- 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. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION .)
- 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.
- 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 .)
Specification (Reference)
| ECT (°C {°F}) | Resistance (Kilohms) |
|---|---|
| 20 {68} | Approx. 2.45 |
| 80 {176} | Approx. 0.318 |