See also:

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 ...

Gross vehicle weight (GVW)
The vehicle's curb weight + cargo + passengers. NOTE • The location of the various labels in your vehicle can be found on page 350. • A table listing important weight limits for your vehicle ca ...

Selecting a magnetic zone
Magnetic zones. The earth is divided into 15 magnetic zones. The correct zone must be selected for the compass to work correctly. 1. Put the ignition in mode II. 2. Using a pen or similar obje ...