Cable OBD II OBD2 DB9 female to J1962 male 90cm

RS-232 (Recommended Standard 232, also known as EIA/TIA RS-232C) is an interface that designates a standard for the exchange of a series of binary data between a DTE (Data Terminal Equipment) and DCE (Data Communication Equipment , Data Communication Equipment), although there are others in which the RS-232 interface is also used. An equivalent definition published by the ITU is called V.24. The RS-232 is a connectorDB-25 type (25-pin), although it is normal to find the version of 9-pin (DE-9, or popularly also called DB-9), cheaper and even extended to certain types of peripherals (such as serial mouse PC).

OBD (On Board Diagnostics) is a diagnostic system on board vehicles (cars and trucks). Currently, the OBD-II (United States), EOBD (Europe) and JOBD (Japan) standards that provide full monitoring and control of the motor vehicle and other devices are used. Heavy vehicles have a different standard, regulated by SAE, known as J1939. Pin assignment 1. - 2. J1850 + 3. - 4. Frame Earth 5.Signal Ground 6 CAN (J2284) High ISO 9141 KLine 7. 8. - 9. - 10. J1850 11. - 12. - 13. - 14. CAN (JJ2284) Low ISO 15. 16. 9141 L Power Line The pins marked battery - are normally used for specific models.