Honda 2017 HR-V Owner's Manual page 474

uuEmissions TestinguTesting of Readiness Codes
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 in
( D (continuously variable) or 5th (manual). Do not use cruise control. When
traffic allows, drive for 90 seconds without moving the accelerator pedal. (Vehicle
speed may vary slightly; this is okay.) If you cannot do this for a continuous 90
seconds because of traffic conditions, drive for at least 30 seconds, then repeat it
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.
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