Set Condition

After a calibrated amount of cool down time, the Powertrain Control Module (PCM) compares the AAT, Engine Coolant Temperature (ECT) Sensor, and the Intake Air Temperature (IAT) Sensor values. If the general temperature rationality passes, the PCM compares the Engine Oil Temperature (EOT) Sensor value to a threshold based on the other temperature sensor values. If the difference is greater than a calibrated value, the diagnostic fails.