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:
Replacing the turn signal bulb
1. Turn the lamp holder approximately 1/4
turn counterclockwise and pull it out of the
headlight housing.
2. Press in the bulb slightly and pull it out of
the holder.
3. Align the guide lugs on ...
How BLIS functions in daylight and darkness
Daylight
BLIS reacts to the shape of surrounding vehicles. The system is designed to help
detect motor vehicles such as cars, trucks, buses, motorcycles, etc.
Darkness
BLIS reacts to the headligh ...
Options and accessor
Optional or accessory equipment described in
this manual is indicated by an asterisk.
Optional or accessory equipment may not be
available in all countries or markets. Please
note that some vehi ...
