Honda 2003 Accord Owner's Manual page 378

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 (A/T) or 5th (M/T). Do not use
the cruise control. When traffic
allows, drive for 90 seconds
without moving the accelerator
pedal. (Car 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).
Then drive in city/suburban
traffic for at least 10 minutes.
When traffic conditions allow, let
the car coast for several seconds
without using the accelerator
pedal or the brake pedal.
If the testing facility determines the
readiness codes are still not set, see
your Honda dealer.
State Emissions Testing
Technical Information
375