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E/E Data Link Security

Vehicle E E System Diagnostic Standards Committee
  • Ground Vehicle Standard
  • J2186_201907
  • Current
Published 2019-07-12 by SAE International in United States

This SAE Recommended Practice establishes a uniform practice for protecting vehicle components from "unauthorized" access through a vehicle data link connector (DLC). The document defines a security system for motor vehicle and tool manufacturers. It will provide flexibility to tailor systems to the security needs of the vehicle manufacturer. The vehicle modules addressed are those that are capable of having solid state memory contents accessed or altered through the data link connector. Improper memory content alteration could potentially damage the electronics or other vehicle modules; risk the vehicle compliance to government legislated requirements; or risk the vehicle manufacturer's security interests. This document does not imply that other security measures are not required nor possible.

 

TP2.0 Vehicle Diagnostic Protocol

Vehicle E E System Diagnostic Standards Committee
  • Ground Vehicle Standard
  • J2819_201905
  • Current
Published 2019-05-20 by SAE International in United States

This Technical Information Report defines the diagnostic communication protocol TP2.0. This document should be used in conjunction with SAE J2534-2 in order to fully implement the communication protocol in an SAE J2534 interface.

 

General Motors UART Serial Data Communications

Vehicle E E System Diagnostic Standards Committee
  • Ground Vehicle Standard
  • J2740_201905
  • Current
Published 2019-05-20 by SAE International in United States

This Technical Information Report defines the General Motors UART Serial Data Communications Bus, commonly referred to as GM UART. This document should be used in conjunction with SAE J2534-2 in order to enhance an SAE J2534 interface to also provide the capability to program ECUs with GM UART.

 

Keyword Protocol 1281

Vehicle E E System Diagnostic Standards Committee
  • Ground Vehicle Standard
  • J2818_201905
  • Current
Published 2019-05-20 by SAE International in United States

This Technical Information Report defines the diagnostic communication protocol Keyword Protocol 1281 (KWP1281). This document should be used in conjunction with SAE J2534-2 in order to fully implement the communication protocol in an SAE J2534 interface.

 

J1979-DA, Digital Annex of E/E Diagnostic Test Modes

Vehicle E E System Diagnostic Standards Committee
  • Ground Vehicle Standard
  • J1979DA_201905
  • Current
Published 2019-05-08 by SAE International in United States

On-Board Diagnostic (OBD) regulations require passenger cars, and light and medium duty trucks, to support communication of a minimum set of diagnostic information to off-board “generic” test equipment. This document specifies the diagnostic data which may be required to be supported by motor vehicles and external test equipment for diagnostic purposes which pertain to motor vehicle emission-related data. SAE J1979 was originally developed to meet U.S. OBD requirements for 1996 and later model year vehicles. ISO 15031 5 was based on SAE J1979 and was intended to combine the U.S. requirements with European OBD requirements for 2000 and later model year vehicles.

 

Misfire Generator Functional Requirements

Vehicle E E System Diagnostic Standards Committee
  • Ground Vehicle Standard
  • J2901_201904
  • Current
Published 2019-04-11 by SAE International in United States
The intent of the specification is to present a functional set of requirements which define the user and hardware interfaces while providing sufficient capability to meet the misfire patterns for compliance demonstration and engineering development. Throughout this requirement, any reference to “ignition or injector control signal” is used interchangeably to infer that the effected spark ignition engine’s ignition control signal or the compression ignition engine’s injector control signal is interrupted, timing phased, or directly passed by the misfire generator. For spark ignition engines, the misfire generator behaves as a spark-defeat device which induces misfires by inhibiting normal ignition coil discharge. It does so by monitoring the vehicle’s ignition timing signals and suspends ignition coil saturation for selected cylinder firing events. The misfire generator will thereby induce engine misfire in spark ignited gasoline internal combustion engines; including rotary engines. For compression ignition engines, the misfire generator behaves as a fuel injection-defeat device which induces misfire by inhibiting the normal fuel injection pulses. It does so by monitoring the injection pulses signal and suspending the injection pulses…
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Permanently or Semi-Permanently Installed Diagnostic Communication Devices

Vehicle E E System Diagnostic Standards Committee
  • Ground Vehicle Standard
  • J3005-1_201902
  • Current
Published 2019-02-21 by SAE International in United States
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 CAN communication device connected to the SAE J1962 connector, or hardwired directly to the in-vehicle network.
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Optional Pass-Thru Features

Vehicle E E System Diagnostic Standards Committee
  • Ground Vehicle Standard
  • J2534/2_201901
  • Current
Published 2019-01-16 by SAE International in United States
SAE J2534-1 defines a standard vehicle network interface that can be used to reprogram emission-related control modules. However, there is a need to support vehicles prior to the 2004 model year, as well as non-emission related control modules. The SAE J2534-2 document meets these needs by detailing extensions to an SAE J2534-1 specification. It is not required for an interface to be fully compliant with SAE J2534-1 specification to implement some of the features specified in this document. Together, these extensions provide the framework for a common interface to protect the software investment of the Vehicle OEMs and Scan Tool manufacturers. Only the optional features will be described by this document and are based on the December 2004 publication of SAE J2534-1.
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Digital Annex of Diagnostic Trouble Code Definitions and Failure Type Byte Definitions

Vehicle E E System Diagnostic Standards Committee
  • Ground Vehicle Standard
  • J2012DA_201812
  • Current
Published 2018-12-19 by SAE International in United States

The J2012 Digital Annex of Diagnostic Trouble Code Definitions Spreadsheet provides DTC information in an excel format for use in your organization's work processes. The column headings include the same information as contained in the J2012 standard.

 

Honda Diagnostic Serial Data Link Protocol - ABS/VSA System

Vehicle E E System Diagnostic Standards Committee
  • Ground Vehicle Standard
  • J2809_201710
  • Current
Published 2017-10-09 by SAE International in United States
This Technical Information Report defines the proprietary diagnostic communication protocol for ABS or VSA ECU (Electronic Control Unit) implemented on some Honda vehicles. This protocol does not apply to all Honda vehicles. This document should be used in conjunction with SAE J2534-2 in order to fully implement the communication protocol in an enhanced SAE J2534 interface. The purpose of this document is to specify the requirements necessary to implement the communication protocol in an enhanced SAE J2534 interface.
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