A test that allows you to test the control registers, the network controller, the diskette drive system, memory, the cache, the system clock, and watch the network for valid packets.
Computer permanently fitted to a vehicle and programmed to monitor, detect and report on engine and electrical malfunctions.
A system on board of the vehicle that monitors emission control components and alerts the driver (e.g., by a dashboard light) if malfunctions or emission deterioration occurs. The OBD system involves a number of sensors and a data processor, which is typically integrated with the vehicle's electronic management system.
A system that monitors emission-related components and alerts the driver to problems by illuminating the “Check Engine” or “Service Engine Soon” indicator light.
A system of vehicle component and condition monitors controlled by a central, onboard computer designed and programmed, among other things, to signal the driver when conditions exist which could lead to (or which have already produced) a component or system failure.
On-Board Diagnostics, or OBD, in an automotive context, is a generic term referring to a vehicle's self-diagnostic and reporting capability. OBD systems give the vehicle owner or a repair technician access to state of health information for various vehicle sub-systems. The amount of diagnostic information available via OBD has varied widely since the introduction in the early 1980's of on-board vehicle computers, which made OBD possible.