SAE J1939/73_202208 PDF | Request Standard
Historical

SAE J1939/73_202208

Application Layer - Diagnostics

Standard by SAE International, 2022-08-05

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  • Language: English
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About This Item

SAE J1939-73 defines the SAE J1939 messages to accomplish diagnostic services and identifies the diagnostic connector to be used for the vehicle service tool interface. Diagnostic messages (DMs) provide the utility needed when the vehicle is being repaired. Diagnostic messages are also used during vehicle operation by the networked electronic control modules to allow them to report diagnostic information and self-compensate as appropriate, based on information received. Diagnostic messages include services such as periodically broadcasting active diagnostic trouble codes, identifying operator diagnostic lamp status, reading or clearing diagnostic trouble codes, reading or writing control module memory, providing a security function, stopping/starting message broadcasts, reporting diagnostic readiness, monitoring engine parametric data, etc. California-, EPA-, or EU-regulated OBD requirements are satisfied with a subset of the specified connector and the defined messages. This document has been revised with the following changes: Additional diagnostic message and special instructions FMI. Additions to document for China IV non road and OBD MY2024 regulations. Correction of the MIL activation mode for WWH and EURO VI implementations.
SKU: 848048056940

  • Publication Date: 2022-08-05
  • Standard Status: historical
  • Publisher: SAE International
  • Document Type: Ground Vehicle Standard
  • Subject: On-board diagnostics (OBD), Variable valve timing, Exhaust gas recirculation (EGR), Diesel particulate filters, Emissions control, Engine cooling systems, Control systems, Embedded software,
  • Official SAE: Doi link

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