6. Let the engine idle with your foot off the accelerator for 20 seconds.
7. Select a nearby, lightly traveled major highway where you can maintain a
speed of 50 to 60 mph (80 to 97 km/h) for at least 20 minutes. Drive on the
highway with the vehicle in Drive. Do not use cruise control. When traffic
allows, drive for 90 seconds without using the accelerator pedal. (Vehicle
speed may vary slightly; this is OK.) If you cannot do this for a continuous 90
seconds because of traffic conditions, drive for at least 30 seconds, then
repeat two more times (for a total of 90 seconds).
8. Drive in city or suburban traffic for at least 10 minutes. When traffic
conditions allow, let the vehicle coast for several seconds without using the
accelerator pedal or the brake pedal.
9. Park the vehicle and leave the engine off for 30 minutes.
The readiness codes are erased when the battery is disconnected. The codes
are set again only after several days of driving under a variety of conditions.
If a testing facility determines that the readiness codes are not set, you may be
requested to return at a later date to complete the test or see your dealer.