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:
External audio source volume
If an external devices such as an MP3 player or an iPod is connected to the AUX
socket, the device's volume may be different from the volume of the internal sound
sources such as the disc play ...
Symbols and messages in the display
When City Safety™ automatically applies the brakes, one or more of the symbols
in the main instrument panel may illuminate and its associated message will be displayed.
A text message can be erased ...
Equalizer
Equalizer FR
EQ – FRONT (certain audio systems)
This function is used to fine-tune the sound
from the front speakers.
1. Select AUDIO SETTINGS in the menu and
press ENTER.
2. Select Equalizer ...
