Malfunction Threshold

A malfunction is detected if the following three conditions are present after the engine has stopped and the ignition switch has been turned to LOCK (0) for at least 6 hours before restarting the engine:

• When the temperature difference between the IAT and ECT1 is 67 °F (37 °C) or more.
• When the temperature difference between the IAT and ECT2 is 60 °F (33 °C) or more.
• When the temperature difference between the ECT2 and ECT1 is 74 °F (41 °C) or more.