Checking Coolant Sensor Calibration & Radiator Fan Operation

NOTE: After each repair, perform TEST VER-2 .

Start engine. Allow engine to reach normal operating temperature. Using scan tool, read Engine Coolant Temperature (ECT) sensor value. If ECT sensor value does not increase smoothly, replace ECT sensor. If ECT sensor value increases smoothly, go to next step.
If coolant temperature reaches 180°F (82°C) or more, replace ECT sensor. If coolant temperature does not reach 180°F (82°C) or more, go to next step.
Run engine until radiator fan operates or temperature reaches 220°F (104°C). If cooling fan does not operate, repair cooling fan as necessary. See SPECIFICATIONS & ELECTRIC COOLING FANS article in ENGINE COOLING. If cooling fan operates, test is complete.