Malfunction determination 2:

With a partially cooled engine (one that has been off for less than 6 hours):

When the difference between the coolant temperature after 24 minutes or more of running time or 3 miles (4 km) or more of driving distance the coolant temperature after the engine has been off for 6 hours and then run for 10 seconds is 18 deg.F (10 deg.C) or less, a malfunction is detected.