Engine Coolant Temperature (ECT) Sensor
Turn ignition off. Disconnect ECT sensor connector. Drain small amount of coolant. Remove ECT sensor from vehicle and measure resistance at various temperatures. Replace ECT sensor if not within specification. See ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE table.
ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) | (1) Ohms | (1) Output Voltage | ||
|---|---|---|---|---|
| -22 (-30) | 28,000 | 4.70 | ||
| 14 (-10) | 9000 | 4.20 | ||
| 68 (20) | 2500 | 2.70 | ||
| 104 (40) | 1050 | 2.00 | ||
| 140 (60) | 600 | 1.20 | ||
| 176 (80) | 330 | 0.75 | ||
| 266 (130) | 90 | 0.25 | ||
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