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Engine Coolant Temperature (ECT) Sensor

ECT sensor is threaded into upper front side of engine. Unplug 2-wire connector (Red/White and Green/White wires) from sensor. Measure resistance across sensor terminals. Resistance should be as specified in ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE .

ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE

Temperature - °F (°C)	(Ohms)
-4 (-20)	15,000-18,000
68 (20)	1000-4000
176 (80)	200-400
248 (120)	50-150