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.
See also:
Switching BLIS on and off
BLIS is automatically activated when the ignition
is switched on. The indicator lights will
provide confirmation by flashing 3 times.
• The system can be switched off by pressing
the BLIS butt ...
Low beams
When the engine is started, the low beams are
activated automatically (daytime running lights)
if the headlight control is in position 0 or
.
Daytime running lights can be deactivated in
the ...
Tire inflation pressure table
The following tire pressures are recommended
by Volvo for your vehicle. Refer to the tire inflation
placard for information specific to the tires installed on
your vehicle at the factory.
NOTE
...
