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:
Low beam, Halogen
1. Remove the headlight housing from the vehicle (see page 306).
2. Remove the cover over the bulbs (see page 308).
3. Unplug the connector from the bulb.
4. Remove the bulb by pulling it straigh ...
High beam flash
Move the lever toward the steering wheel to
position 1. The high beams come on until the
lever is released. ...
Driver Alert Control (DAC)– introduction
This function is intended to alert the driver if his/her driving becomes erratic,
such as if the driver is distracted or fatigued.
NOTE
The camera has certain limitations, see page 160.
A ...
