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 fuses
1 Relays/fuse box in the engine compartment
2 Fuse box in the passenger compartment,
behind the plastic cover
3 Fuse box in the passenger compartment,
on the edge of the dashboard
4 Fuse box in ...
Anti-lock Brake System (ABS)
The ABS system in your vehicle performs a
self-diagnostic test when the vehicle first reaches
the speed of approximately 12 mph
(20 km/h). The brake pedal will pulsate several
times and a sound ma ...
Front seats
1 - Lumbar support: turn the control for firmer or softer lumbar support.
2 - Front-rear adjustment: lift the bar and move the seat to the position of
your choice.
3 - Raise/lower front edge of ...
