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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.
The sort of faults that can be detected include a range of mechanical problems such as imbalance, misalignment, and bearing problems in the motor and driven equipment, as well as electrical problems including insulation breakdown, loose stator windings, rotor slot problems, current or voltage imbalance, and harmonic distortion.
OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.
A growler is an electrical device primarily used for testing a motor for shorted coils. A growler consists of a coil of wire wrapped around an iron core and connected to a source of alternating current. When placed on the armature or stator core of a motor the growler acts as the primary of a transformer and the armature coils act as the ...
An electric motor (E-motor) test stand (also referred to as a bench) is a test stand for reproducible testing of electric motors. In addition to the mechanical design, an electric motor test stand consists of accompanying measurement devices, sensors, and application software. The bus systems used to control and monitor the test objects are ...
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 ...
A built-in self-test (BIST) or built-in test (BIT) is a mechanism that permits a machine to test itself. Engineers design BISTs to meet requirements such as: high reliability; lower repair cycle times; or constraints such as: limited technician accessibility; cost of testing during manufacture
on-board diagnostic systems (OBD) for road vehicles Transposition UN Regulation No.49: Transposition UN Regulation No.49: 6: Safety glazing Transposition UN Regulation No.43: Transposition UN Regulation No.43: 7: Head restraints 8: Electronic stability control systems into national law with amendments and exemptions