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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Before a long distance trip
It is always worthwhile to have your vehicle checked by a trained and qualified
Volvo service technician before driving long distances. Your retailer will also
be able to supply you with bulbs, fu ...
Average speed
The system calculates the average speed from
the last resetting. Reset using RESET. ...
RSE pop-up menu
Press on the remote control
while a video
file is playing to display the pop-up menu. Use
the scroll wheel and the buttons on the remote
to make menu selections. See page 254 for
detailed i ...
