"On-Board Diagnostic (OBD) regulations require passenger cars@ and light and medium duty trucks@ to support communication Of a minimum set of diagnostic to Off-board ""generic"" test equipment. This document specifies the diagnostic data which may be required to be supported by motor vehicles and external test equipment for diagnostic purposes which pertain to motor vehicle emission-related data. SAE J1979 was originally developed to meet U.S. OBD requirements for 1996 and later model year vehicles. ISO 15031-5 was based on SAE J1979 and was intended to combine the U.S. requirements with European OBD requirements for 2000 and later model year vehicles."
SAE J1979-DA-2014 history
2021SAE J1979-DA-2021 Digital Annex of E/E Diagnostic Test Modes (See Also SAE J1979; Includes Access to Additional Content)
2019SAE J1979-DA-2019 Digital Annex of E/E Diagnostic Test Modes (See Also SAE J1979)
2017SAE J1979-DA-2017 Digital Annex of E/E Diagnostic Test Modes (See Also SAE J1979)
2014SAE J1979-DA-2014 J1979-DA@ Digital Annex of E/E Diagnostic Test Modes
2011SAE J1979-DA-2011 J1979-DA@ Digital Annex of E/E Diagnostic Test Modes