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:
Six-cylinder turbo engine
The 3-litre, six-cylinder turbo engine is transversely mounted and very
compact. The engine delivers 285 horsepower and 400 Nm of torque, from low up to
high revs. The turbo-six provides a high le ...
Power brakes function only when theengine is running
The power brakes utilize vacuum pressure
which is only created when the engine is running.
Never let the vehicle roll to a stop with the
engine switched off.
If the power brakes are not workin ...
Extra high beam
1. Remove the headlight housing from the
vehicle (see page 322).
2. Remove the cover over the bulbs (see
page 323).
3. Disconnect the wiring connector from the
bulb holder.
4. Remove the bu ...
