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.
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Driving dynamics: steering, brakes and transmission
All XC70 models get Volvo's innovative AWD (All-Wheel Drive) transmission as
standard. This advanced system, which automatically apportions torque
front-to-rear depending on need, improves the XC7 ...
Switching to another device
It is possible to switch among paired Bluetooth devices that are in the vehicle.
To do so:
1. Press MEDIA several times until Bluetooth is displayed, release the button
and wait for several secon ...
Symbols in the main instrument panel
Warning symbols
A Canadian models
Indicator symbols
A Canadian models
Other information symbols
Information symbols in the center console display
Information symbols in the ceili ...
