Diagnostic Procedure
WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
Remove Engine Coolant Temperature (ECT) sensor, and place in heated water. See Figure. Measure resistance between ECT sensor terminals (component side), with water at specified temperatures. See ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE . If resistance is not as specified, replace ECT sensor and retest system. If resistance is as specified, test is complete.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE
| Temperature - °F (°C) | (1) Ohms | ||
|---|---|---|---|
| 68 (20) | 2100-2900 | ||
| 122 (50) | 680-1000 | ||
| 194 (90) | 236-260 | ||
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