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SAE J1939/84 (JUN2023)

Current Revision

OBD Communications Compliance Test Cases for Heavy-Duty Components and Vehicles

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The purpose of this SAE Recommended Practice is to verify that vehicles and/or components are capable of communicating a required set of information, which is described by the diagnostic messages specified in SAE J1939-73, that is in accordance with off-board diagnostic tool interface requirements contained in the government regulations cited below. This document describes the tests, methods, and results for verifying diagnostic communications from an off-board diagnostic tool (i.e., scan tool) to a vehicle and/or component. SAE members have generated this document to serve as a guide for testing vehicles for compliance with ARB and other requirements for emissions-related on-board diagnostic (OBD) functions for heavy-duty engines used in medium- and heavy-duty vehicles. The development of HD OBD regulations by U.S. EPA and California’s Air Resources Board (ARB) require that diagnostic message services are exercised to evaluate diagnostic communication standardization requirements on production vehicles. The user should reference the summary provided by SAE J1939-73 Tables 1 and 2 for OBD compliance support, and the discussion in SAE J1939-73 Appendix H for additional implementation concepts.

SDO SAE: SAE International
Document Number J1939/84
Publication Date June 13, 2023
Language en - English
Page Count 136
Revision Level 202306
Supercedes
Committee
Publish Date Document Id Type View
June 13, 2023 J1939/84_202306 Revision
Oct. 18, 2017 J1939/84_201710 Revision
Jan. 14, 2016 J1939/84_201601 Revision
Feb. 18, 2015 J1939/84_201502 Revision
June 11, 2012 J1939/84_201206 Revision
Dec. 2, 2010 J1939/84_201012 Revision
Dec. 8, 2008 J1939/84_200812 Revision