The presence of the OBDII allows telematics devices to silently process information such as engine revolutions, vehicle speed, fault codes, fuel usage and more.
On-Board Diagnostic system - Brief answers to basic questions
What Is OBDII? History of On-board Diagnostics (OBD)
What is OBD? Understanding On-Board Diagnostics
OBD II Scanner – How to choose the right OBD-II scanner for your car(s)
OBD (On Board Diagnostics)
OBD II Specifications and Connections
PDF) Securing the On-board Diagnostics Port (OBD-II) in Vehicles
The Ultimate Guide to Using a Car Diagnostic Scanner
OBD II Diagnosegerät HD V3.0 für LKW