Resistance Inspection
WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flowchart.
- Disconnect the ECT sensor connector.
- Remove the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION .)
- Place the ECT sensor in the water and while increasing the water temperature, measure the resistance between ECT sensor terminals A and B.
- If the monitor item status/specification (reference) is not within the specification, even though the ECT sensor resistance is within the specification, perform the Circuit Open/Short Inspection .
- If not within the specification, replace the ECT sensor.