Malfunction Threshold
A malfunction is detected if the temperature difference (IAT minus ECT) is 52°F (29°C) or more after the engine and the ignition switch have been off for at least 6 hours before restarting the engine.
A malfunction is detected if the temperature difference (IAT minus ECT) is 52°F (29°C) or more after the engine and the ignition switch have been off for at least 6 hours before restarting the engine.