Set Condition

After a calibrated amount of cool down time, the Powertrain Control Module (PCM) compares the Ambient Air Temperature (AAT), Engine Coolant Temperature (ECT), and Intake Air Temperature (IAT) Sensor values. If one sensor value is not within 10°C (18°F) of the other temperature sensors for two consecutive trips, a DTC will set. Three good trips to turn off the MIL.