Engine Coolant Temperature (ECT) Sensor

Sensor is located at rear of engine on 3.0L and in water outlet connector at rear of cylinder head on 2.3L. Sensor is located in intake manifold cooling passage on all other models.

ECT sensor requires a 5-volt reference signal during engine operation. With sensor disconnected, sensor may be checked by measuring resistance between sensor terminals. For specifications, see SENSOR RANGE CHARTS article in the ENGINE PERFORMANCE section. For additional sensor circuit testing, see CIRCUIT TEST DA in TESTS W/CODES - EEC-IV article in the ENGINE PERFORMANCE section.