See also:

Electrical system
General information 12 volt system with a voltage-regulated alternator. Single pole system in which the chassis and engine block are used as conductors. The negative terminal is connected to the ...

Environment
Volvo is passionately committed to protecting our environment. Along with safety, environmental protection is a cornerstone of the Volvo brand, commensurate with the company's philosophy to protect ...

What is an Onboard Diagnostic System (OBD II)?
OBD II is part of your vehicle's computerized engine management system. It stores diagnostic information about your vehicle's emission controls. It can light the Check Engine light (MIL) if it ...