See also:

Emission control information label
The emission control information label is attached to the underside of the hood as shown. ...

Readiness for Inspection/Maintenance (I/M) test
A vehicle equipped with All-Wheel Drive (AWD) should never be tested using a two wheel dynamometer (such as the dynamometers used by some states for emissions testing), or similar equipment. M ...

Air conditioner operation (if so equipped)
Start the engine, turn the fan control dial to the desired position, and push in the button to activate the air conditioner. When the air conditioner is on, cooling and dehumidifying functions ...