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:
Vanity mirror lights
1. Carefully insert a
screwdriver and pry out
the lens.
2. Pry out the bulb and replace it.
3. Carefully press the lower edge of lens onto
the four tabs and press the upper edge of
the lens in ...
Compatible formats
The media player can play a number of different
types of files and disc formats, and is compatible
with the formats listed in the following
table.
NOTE
Dual format (double-sided discs) such as ...
Manual locking
In certain situations (e.g., if there is no electrical current in the vehicle),
the doors can be locked manually.
The detachable key blade (see page 59) can be used in the lock cylinder in the
dr ...
