Malfunction Threshold

A malfunction is detected if these three conditions are present after the engine and the ignition switch have been off for at least 6 hours:

• When the temperature difference between the IAT and ECT1 is 61 °F (34 °C) or more.
• When the temperature difference between the IAT and ECT2 is 28 °F (16 °C) or more.
• When the temperature difference between the ECT2 and ECT1 is 60 °F (33 °C) or more.