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:
Automatic closing
The power tailgate can be closed by pressing
the button on the tailgate (see the
illustration)
or by pressing it down.
NOTE
If the tailgate is pressed down e.g., by the
weight of snow or st ...
Removing the cover to access the bulbs
NOTE
Before starting to replace a bulb, see page 306.
1. Loosen the cover's four retaining screws with the tool (1) provided in the
vehicle's tool kit (see page 290). The screws sho ...
Coolant
Location of the coolant reservoir
Normally, the coolant does not need to be changed. If the system must be drained,
consult a trained and qualified Volvo service technician.
See page 341 for inf ...
