On-board diagnostics (OBD) is an automotive term referring to a vehicle self-diagnostic and reporting capability. OBD systems give the vehicle owner or repair technician access to the status of the various vehicle subsystems. The amount of diagnostic information available via OBD has varied widely since its introduction in the early 1980s versions of on-board vehicle computers. Early versions of OBD would simply illuminate a malfunction indicator light if a problem was detected but would not provide any information as to the nature of the problem. Modern OBD implementations use a standardized digital communications port to provide real-time data in addition to a standardized series of diagnostic trouble codes, or DTCs, which allow one to rapidly identify and remedy malfunctions within the vehicle.

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  • 16 pin J1962 OBD-2 car proprietary
    OBD II CAN bus Controller area network (CAN or CAN-bus) is a vehicle bus standard designed to allow microcontrollers and devices to communicate with each other within a vehicle without a host computer
  • 16 pin J1962 OBD-2 car proprietary
    OBD II diagnostic interface OBD stands for on-board diagnostics and defines the modern fuel managed vehicles electronic interface system.
  • 16 pin J1962 OBD-2 car proprietary
    OBD II to USB cable J1850 interface supported
  • 9 pin D-SUB male
    OBD-2 ISO 14230-4 (ISO-9141-2, KWP2000) RS-232 cable schematic should be suitable to vehicles of most European and Asian manufacturers. Alfa Romeo, Audi, BMW, Citroen, Fiat, Honda, Hyundai, Jaguar (X300, XK), Jeep since 2004, Kia, Land Rover, Mazda, Mercedes, Mitsubishi, Nissan, Peugeot, Renault, Saab, Skoda, Subaru, Toyota, Vauxhall, Volkswagen (VW) since 2001, Volvo to 2004
  • 9 pin D-SUB female
    OBD-2 ISO 9141-2 (14230-4, KWP2000) simple RS-232 cable schematic 
  • 9 pin D-SUB female
    OBD-2 ISO-9141-2 (ISO 14230-4, KWP2000) serial cables schematics 
  • 16 pin J1962 OBD-2 car proprietary
    OBD-2 PWM, VPW, ISO 9141-2, CAN ELM327 diagnostic universal cable scheme  ISO 15765-4 CAN, SAE J1850 PWM, SAE J1850 VPW, ISO 9141-2, ISO 14230-4 and SAE J1939 are supported
  • 6 pin deutsch proprietary
    SAE J1587 deutsch 6 pin connector J1587 is an automotive diagnostic protocol standard developed by the Society of Automotive Engineers (SAE) for heavy-duty and most medium-duty vehicles built after 1985.
  • 9 pin J1930
    SAE J1708 9 pin deutsch connector SAE J1708 is a standard used for serial communications between ECUs on a heavy duty vehicle and also between a computer and the vehicle.
  • 9 pin J1930
    SAE J1939 9 pin deutsch connector and DB9 Serial adapter for ELM327 scantool
  • 9 pin D-SUB male
    SAE J1939, CAN-CIA standard interface 
  • 4 pin USB A plug
    USB k-line adapter scheme 

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