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:
Tire Pressure Monitoring System (TPMS)
The tire pressure monitoring system1 uses sensors
mounted in the tire valves to check inflation
pressure levels. When the vehicle is moving
at a speed of approximately 20 mph
(30 km/h) or faster, ...
Changing
WARNING
Connect and disconnect the positive and
negative cables in the correct sequence. ...