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On-board diagnostics (OBD) is a term referring to a vehicle's self-diagnostic and reporting capability. In the United States, this capability is a requirement to comply with federal emissions standards to detect failures that may increase the vehicle tailpipe emissions to more than 150% of the standard to which it was originally certified.
ISO 11452-2, Road vehicles - Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy - Part 2: Off-vehicle radiation source; ISO 11452-3, Road vehicles - Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy - Part 3: On-board transmitter simulation
Heavy duty vehicles (greater than 14,000 lb or 6,400 kg) made after 2010, [1] for sale in the US are allowed to support OBD-II diagnostics through SAE standard J1939-13 (a round diagnostic connector) according to CARB in title 13 CCR 1971.1. Some heavy duty trucks in North America use the SAE J1962 OBD-II diagnostic connector that is common ...
On-Board Diagnostic (OBD) systems for L-category vehicles 19 EVAPorative emission test procedure for the Worldwide harmonized Light vehicle Test Procedure (WLTP EVAP) 20 Electric Vehicle Safety (EVS) 21 Determination of Electrified Vehicle Power (DEVP) 22 -vehicle Battery Durability for Electrified Light-Duty Vehicles 24 Laboratory Measurement ...
Automatic test equipment, any apparatus that performs tests using automation; Built-in test equipment, passive fault management and diagnosis equipment built into airborne systems to support maintenance; On-board diagnostics, test equipment for automobiles; Transistor tester, used to test the electrical behavior of transistors and solid-state ...
Some of the data may be manipulated on board for immediate system diagnosis and prognosis. Less time critical data is processed off board. All the historical data for the vehicle can be compared with current performance to identify degradation trends at a more detailed level than could be done on board the vehicle.
The data link connector (DLC) is the multi-pin diagnostic connection port for automobiles, trucks, and motorcycles used to interface a scan tool with the control modules of a given vehicle and access on-board diagnostics and live data streams. [1] Prior to 1996, many OBD-I data link connector's were in the engine compartment, usually near the ...
Society of Automotive Engineers standard SAE J1939 is the vehicle bus recommended practice used for communication and diagnostics among vehicle components. Originating in the car and heavy-duty truck industry in the United States, it is now widely used in other parts of the world.