The scope of the document is to define communication best practices in order to minimize problems for the vehicle owner when installing equipment which has a permanently or semi-permanently diagnostic communication device connected to the SAE J1962 connector or hardwired directly to the in-vehicle network.
Rationale
SAE J3005 is being published as a new document as guidance for Remote I/M programs Portable Emission Measurement Systems (PEMS), GPS, Wireless-LAN or Bluetooth interfaces and insurance devices. The SAE J3005 devices are not intended to be used for SAE J1699-3 vehicle validation testing. The document focuses on OBD mandated communication protocols defined in SAE J1979.
It is not the purpose of this document to preclude the use of non SAE J1979 proprietary protocols, PIDs, or connector pins used by vehicle manufacturers. Device manufacturers should check with vehicle manufacturer guidelines before using proprietary information.
The committee shall increase customer satisfaction and lower product life cycle costs by investigating and recommending standards that will promote more effective diagnosis of vehicle electrical and electronic system problems. The resulting recommended practices will focus on model year 1992 and beyond. However, they may be useful for prior vehicle diagnosis/repair and may serve as a basis for additional recommended practices and pre-model year 1992 vehicles.Vision Statement: A standard disgnostic connector (in a standard location) will be in all vehicles. Pin assignments for a portion of the connector will also be standardized.All vehicles will implement a set of industry standard diagnostic test modes that can be executed over a standard communication data line (i.e., SAE J1850, ISO 9141-2). Industry standard test information will be associated with some of these diagnostic test modes.An OBD II scan tool will be able to utilize a minimum set of standardized diagnostic test modes and test information.A system will be in place that will allow standard electronic access of all E/E diagnostic service information. Future diagnostic legislation will be in harmony with this vision and the resulting SAE Recommended Practices.
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Permanently or Semi-Permanently Installed Diagnostic Communication Devices
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Permanently or Semi-Permanently Installed Diagnostic Communication Devices
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