How do states use OBD II for emission inspections?

Many states connect a computer directly to a vehicle's OBD II system. The inspector can then read "faults." In some states, this type of inspection has replaced the tailpipe emission test.
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Selecting a station (in wavebands AM/FM1/FM2)
Automatic tuning
1. Press RADIO. Continue pressing this button
to toggle to the desired waveband
(AM, FM1, etc.).
2. Release the button and wait several seconds
or press OK/MENU.
3. Press the ...
When does BLIS function
The system functions when your vehicle is
moving at speeds above 6 mph (10 km/h).
When you pass another vehicle:
The system reacts when you pass another
vehicle at a speed of up to 6 mph (10 km/ ...
Opening/closing the fuel cap
Fuel vapor expands in hot weather. Open the filler cap slowly.
After refueling, close the fuel filler cap by turning it clockwise until it clicks
into place.
CAUTION
Do not refuel with the e ...
