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Normas SAE – AENOR
SAE J1979_200204

SAE J1979_200204

E/E Diagnostic Test Modes -- Equivalent to ISO/DIS 15031-5:April 30, 2002

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Fecha publicación:
2002-04-30 /Revised
Abstract:
This document supersedes SAE J1979 SEP1997, and is technically equivalent to ISO/DIS 15031-5:April 30, 2002. This SAE Recommended Practice is intended to satisfy the data reporting requirements of On-Board Diagnostic (OBD) regulations in the United States and Europe, and any other region that may adopt similar requirements in the future. This document specifies: a. Message formats for request and response messages, b. Timing requirements between request messages from external test equipment and response messages from vehicles, and between those messages and subsequent request messages, c. Behavior of both the vehicle and external test equipment if data is not available, d. A set of diagnostic services, with corresponding content of request and response messages, to satisfy OBD regulations, This document includes capabilities required to satisfy OBD requirements for multiple regions, model years, engine types, and vehicle types. Those regulations are not yet final for some regions, and are expected to change in the future. This document makes no attempt to interpret the regulations and does not include applicability of the included diagnostic services and data parameters for various vehicle applications. The user of this document is responsible to verify the applicability of each section of this document for a specific vehicle, engine, model year and region. When a requirement is introduced in one region, it will later also become a requirement in another region. The ISO task force responsible for ISO 15031-5 and the SAE task force work closely together to maintain consistency in diagnostic reporting requirements in these two documents, and to ensure usability of these documents for all regions. The goal is to maintain identical technical content in the two documents, but this document may need to change if additional capabilities are required for the U.S. before the ISO document can be modified to include those changes.
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