J1939/73_200403 Application Layer - Diagnostics

Revised

03/08/2004

Features
Issuing Committee
Scope
Content
The SAE J1939 series of recommended practices are intended for light- and heavy-duty vehicle uses on- or off-road as well as appropriate stationary applications which use vehicle-derived components (e.g. generator sets). Vehicles of interest include, but are not limited to: on- and off-highway trucks and their trailers, construction equipment, and agriculture equipment and implements.
The purpose of these documents is to provide an open interconnect system for on-board electronic systems. It is the intention of these documents to allow electronic devices to communicate with each other by providing a standard architecture.
J1939-73 identifies the diagnostic connector to be used for the vehicle service tool interface and defines messages to accomplish diagnostic services. California-regulated OBD II requirements are satisfied with a subset of the specified connector and the defined messages. 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.
Meta TagsDetails
DOI
https://doi.org/10.4271/J1939/73_200403
Pages
100
Citation
SAE International Recommended Practice, Application Layer - Diagnostics, SAE Standard J1939/73_200403, Revised March 2004, Issued February 1996, https://doi.org/10.4271/J1939/73_200403.
Additional Details
Publisher
Published
Mar 8, 2004
Product Code
J1939/73_200403
Content Type
Recommended Practice
Status
Revised
Language
English