Browse Topic: Diagnostics

Items (160)
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J1939-73 Digital Annex DBCJ1939-73DBC10/11/2023
J1939-73 DBC File - Heavy Duty Diagnostics (DM1, DM2, ...) The SAE J1939-73 DBC file contains decoding rules for converting 'version 4' J1939 diagnostic messages (DM1, DM2, ...) to 'physical values'. This lets you identify issues in e.g. trucks, tractors and buses. DBC is a CAN database format used in most automotive tools.
Software
Comprehensive Evaluation of Logging Frameworks for Future Vehicle Diagnostics2023-01-122306/26/2023
More and more applications (apps) are entering vehicles. Customers would like to have in-car apps in their infotainment system, which they already use regularly on their smartphones. Other apps with new functionalities also inspire vehicle customers, but only as long as the customer can utilize them. To ensure customer satisfaction, it is important that these apps work and that failures are found and corrected as quickly as possible. Therefore, in-car apps also implicate requirements for future vehicle diagnostics. This is because current vehicle diagnostic methods are not designed for handling dynamic software failures of apps. Consequently, new diagnostic methods are needed to support the diagnosis of in-car apps. Log data is a central building block in software systems for system health management or troubleshooting. However, there are different types of log data and log environment setups depending on the underlying system or software platform. Depending on that, the creation of
Bickelhaupt, Sandra, Hahn, Michael, Nuding, Nikolai, Morozov, Andrey, Weyrich, Michael
Technical Paper
Researchers Develop Rapid Lab-on-a-Chip for Cancer, COVID DiagnosticsTBMG-4646209/01/2022
A research center based at the University of Kansas that develops rapid next-generation tests for a host of human ailments like cancer, stroke, and COVID-19 recently earned $6.6 million in continued funding over the next five years from the National Institutes of Health’s National Institute of Biomedical Imaging and Bioengineering (NIBIB) as a National Biotechnology Resource (P41) Center.
Magazine Article
Application of a Digital Twin Virtual Engineering Tool for Ground Vehicle Maintenance Forecasting2022-01-043403/29/2022
The integration of sensors, actuators and real time control in transportation systems enables intelligent system operation to minimize energy consumption and maximize occupant safety and vehicle reliability. The operating cycle of military ground vehicles can be on- and off-road in adverse environments which places a demand on continuous subsystem functionality to fulfill missions. On–board diagnostic systems can alert the operator of degraded operation once established fault thresholds are passed. An opportunity exists to estimate vehicle maintenance needs using model-based predicted trends and compiled information from fleet operating databases. A digital twin, created to virtually describe the dynamic behavior of a physical system using computer mathematical models, can estimate the system behavior based on current and future operating scenarios while accounting for past operating effects. In this manner, the collection of real time data of the physical vehicle can be constantly
Eddy, Conner, WAGNER, Adam, Wagner, JOHN, Castanier, Matthew
Technical Paper
Automotive Diagnostics: Threat or a boon for cybersecurity2022-01-013903/29/2022
The Automotive industry went through a revolution of all sorts with the addition of a lot of electronic components in the vehicles subsequently increasing dependency on the software that these components carried on them. With large number of vehicles sold out in 90’s the service stations became burdened with providing quick and efficient service, and the competing OEMs lead to advancement of the way production and servicing of the vehicles were handled. As in any complex system where diverse components interact with each other the problems of such interactions multiplied causing diagnostics to become lean and efficient so that they can be diagnosed and fixed quickly. These diagnostics resulted in many open interfaces which could control mechanical parts without the intervention of driver with the help of a diagnostic tester. These open interfaces allowed hackers to exploit them for malicious purposes thus triggering cybersecurity protocols to be pulled in for these interfaces during
Prakash, Vignesh
Technical Paper
The Application of Flame Image Velocimetry to After-injection Effects on Flow Fields in a Small-Bore Diesel Engine03-15-03-001509/14/2021
This study implements Flame Image Velocimetry (FIV), a diagnostic technique based on post-processing of high-speed soot luminosity images, to show the in-flame flow field development impacted by after-injection in a single-cylinder, small-bore optical diesel engine. Two after-injection cases with different dwell times between the main injection and after-injection, namely, close-coupled and long-dwell, as well as a main-injection-only case are compared regarding flow fields, flow vector magnitude, and turbulence intensity distribution. For each case, high-speed soot luminosity movies from 100 individual combustion cycles are recorded at a high frame rate of 45 kHz for FIV processing. The Reynolds decomposition using a spatial filtering method is applied to the obtained flow vectors so that bulk flow structures and turbulence intensity distributions can be discussed. The results show significant after-injection-induced flow structures as a group of vectors travelling back toward the
Yang, Jinxin, Rao, Lingzhe, de Silva, Charitha, Kook, Sanghoon
Journal Article
Emissions-Related OBD Systems: A Design OverviewC0708.Multi07/08/2021
On-board diagnostics, required by governmental regulations, provide a means for reducing harmful pollutants into the environment. Since being mandated in 1996, the regulations have continued to evolve and require engineers to design systems that meet strict guidelines. This one day seminar is designed to provide an overview of the fundamental design objectives and the features needed to achieve those objectives for generic on-board diagnostics. The basic structure of an on-board diagnostic will be described along with the system definitions needed for successful implementation. Please note that because of proprietary considerations, this class does not provide details of algorithm design, algorithm performance, or algorithm application. The class will cover general OBD algorithm designs and the features required to promote sound OBD system design. Individuals desiring a more in-depth look at On-Board Diagnostics should consider attending SAE seminar ID# C0707 Designing On-Board
Instructor Led
New Semiconductor Detector Shows Promise for Medical DiagnosticsTBMG-3855802/01/2021
Northwestern University researchers have developed new devices based on a low-cost material to aid in the detection and identification of radioactive isotopes. Using cesium lead bromide in the form of perovskite crystals, the research team found that they were able to create highly efficient detectors in both small, portable devices for field researchers and in very large detectors. The results are more than a decade in the making.
Magazine Article
Handheld Device Diagnoses Skin CancerTBMG-3835001/01/2021
To detect skin cancer, dermatologists rely on magnifying glasses to examine suspicious blemishes and scalpels to cut tissue for analysis. With up to more than 70 percent of biopsies coming back negative, millions of healthy patients undergo painful, costly, and unnecessary procedures.
Magazine Article
Medium/Heavy-Duty E/E Systems Diagnosis NomenclatureJ2403_202008 (Current)08/03/2020
This SAE Recommended Practice is applicable to all E/E systems on MD and HD vehicles. The terms defined are largely focused on compression-ignited and spark-ignited engines. Specific applications of this document include diagnostic, service and repair manuals, bulletins and updates, training manuals, repair data bases, under-hood emission labels, and emission certification applications. This document focuses on diagnostic terms, definitions, abbreviations, and acronyms applicable to E/E systems. It also covers mechanical systems which require definition. Nothing in this document should be construed as prohibiting the introduction of a term, abbreviation, or acronym not covered by this document. The use and appropriate updating of this document is strongly encouraged. Certain terms have already been in common use and are readily understood by manufacturers and technicians, but do not follow the methodology of this document. These terms fall into three categories: a Acronyms that do not
Truck Bus Control and Communications Network Committee
Recommended Practice
Medium/Heavy-Duty E/E Systems Diagnosis NomenclatureJ2403_202008-TEST-REC (Historical)08/03/2020
This SAE Recommended Practice is applicable to all E/E systems on MD and HD vehicles. The terms defined are largely focused on compression-ignited and spark-ignited engines. Specific applications of this document include diagnostic, service and repair manuals, bulletins and updates, training manuals, repair data bases, under-hood emission labels, and emission certification applications. This document focuses on diagnostic terms, definitions, abbreviations, and acronyms applicable to E/E systems. It also covers mechanical systems which require definition. Nothing in this document should be construed as prohibiting the introduction of a term, abbreviation, or acronym not covered by this document. The use and appropriate updating of this document is strongly encouraged. Certain terms have already been in common use and are readily understood by manufacturers and technicians, but do not follow the methodology of this document. These terms fall into three categories: a Acronyms that do not
Truck Bus Control and Communications Network Committee
Recommended Practice
Selecting Electrical Safety Relay Modules for Optimal PerformanceTBMG-3744308/01/2020
Designers of industrial automated machinery and equipment must follow regulations and standards to ensure they are delivering safe electrical designs; however, there have been cases where uncertainty about the standards has led to overly cautious and costly designs. Or in the worst cases, safety design has been compromised by concerns regarding excessive complexity and cost.
Magazine Article
Valve Leakage Detection in Industrial PumpsTBMG-3738308/01/2020
As an integral part of onshore and offshore drilling, mud pumps circulate drilling fluids to facilitate drilling oil and natural gas wells. Mud pumps stabilize pressure and support the well during the drilling process and drilling fluids provide friction reduction and a means to remove cuttings. A leak detection system for hex pumps was created for a hex mud pump with six pistons, six suction valves, and six discharge valves. The six pistons are driven by a rotating, asymmetric cam. The system monitors the suction and discharge valves using accelerometers.
Magazine Article
Application Layer - DiagnosticsJ1939/73_202006 (Historical)06/09/2020
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.
Truck Bus Control and Communications Network Committee
Technical Standard
Digital Annex of Medium/Heavy-Duty E/E Systems Diagnosis NomenclatureJ2403DA_202003 (Historical)03/17/2020
This document is intended to supplement SAE J2403 by providing the content of Table 1, Table 2, and Table 3 from SAE J2403 in a form that can be sorted and searched for easier use. It is NOT intended as a substitute for the actual document, and any discrepancies between this Digital Annex and the published SAE J2403 document must be resolved in favor of the published document. This document provides the content of Table 1 and Table 2 published in SAE J2403 into the single table in the 'Term' tab, while the 'Recommended Term Definitions' tab provides the content of Table 3 in SAE J2403 and the 'Glossary' tab provides the content of Table 4 in SAE J2403.
Truck Bus Control and Communications Network Committee
Supplement
Permanently or Semi-Permanently Installed Diagnostic Communication Devices, Security GuidelinesJ3005-2_202003 (Current)03/04/2020
The scope of the document is to define the cyber-security best practices to reduce interference with normal vehicle operation, or to minimize risk as to unauthorized access of the vehicle's control, diagnostic, or data storage system; access by equipment (i.e., permanently or semi-permanently installed diagnostic communication device, also known as dongle, etc.) which is either permanently or semi-permanently connected to the vehicle's OBD diagnostic connector, either SAE J1939-13, SAE J1962, or other future protocol; or hardwired directly to the in-vehicle network. This document only specifies requirements and guidance for those diagnostic communication devices and not for the vehicle. Refer to SAE J3138 for requirements for the vehicle side.
Vehicle E E System Diagnostic Standards Committee
Technical Standard
Recommended Practice for Optimizing Automobile Damageability and RepairabilityJ1555_201910 (Current)10/24/2019
This SAE Recommended Practice applies to all portions of the vehicle, but design efforts should focus on components and systems with the highest contribution to the overall average repair cost (see 3.7). The costs to be minimized include not only insurance premiums, but also out-of-pocket costs incurred by the owner. Damageability, repairability, serviceability and diagnostics are inter-related. Some repairability, serviceability and diagnostics operations may be required for collision or comprehensive loss-related causes only. Some operations may be for non-collision-related causes only (warranty, scheduled maintenance, non-scheduled maintenance, etc.). Some may be required for both causes. The scope of this document deals with only those operations that involve collision and comprehensive insurance loss repairs.
Motor Vehicle Council
Recommended Practice
SAE Truck & Off-Highway Engineering: August 201919TOFHP0808/01/2019
Electric machines find their niche Smaller machines working in cities are particularly ripe for electrification, but most off-highway applications will retain the internal-combustion engine. Big data, big benefits Data mining helps users and equipment developers use data from on-vehicle sensors to work more efficiently. Data connectivity in harsh environments Ensuring high-speed data transmission requires OEM designers to think more about components, placement and the impact of environmental conditions early in design. Trucks with intuition Perceptive Automata partners with Volvo Trucks to demonstrate AI technology that can determine when pedestrians will cross the road. Change is afoot Cummins and its CTO help focus the 2019 SAE COMVEC on the fast-shifting technology landscape that faces both on- and off-highway sectors. Editorial AI, ADAS & AVs-oh my! Holistic hydraulic designs add more sensors, controls DSD helps 'balance the books' for buying electric truck technology JCB prepared
Magazine Issue
Diagnose Lithium BatteriesTBMG-3458706/01/2019
Batteries with metallic lithium anodes offer enhanced efficiency compared to conventional lithium-ion batteries because of their higher capacity. However, safety concerns and a short lifespan stand in the way. To better analyze the causes of malfunctions and premature failure of such batteries, researchers have developed a technique that visualizes the distribution of active lithium on the anode and differentiates between dendrites and “dead” lithium. The technique makes use of a fluorescent dye.
Magazine Article
Keyword Protocol 1281J2818_201905 (Current)05/20/2019
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. Some Volkswagen of America and Audi of America vehicles are equipped with ECUs, in which a KWP1281 proprietary diagnostic communication protocol is implemented. The purpose of this document is to specify the KWP1281 protocol in enough detail to support the requirements necessary to implement the communication protocol in an SAE J2534 interface device.
Vehicle E E System Diagnostic Standards Committee
Information Report
TP2.0 Vehicle Diagnostic ProtocolJ2819_201905-TEST-REC (Historical)05/20/2019
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. Some Volkswagen of America and Audi of America vehicles are equipped with ECU(s), in which a TP2.0 proprietary diagnostic communication protocol is implemented. The purpose of this document is to specify the requirements necessary to implement the communication protocol in an SAE J2534 interface.
Vehicle E E System Diagnostic Standards Committee
Information Report
TP2.0 Vehicle Diagnostic ProtocolJ2819_201905 (Current)05/20/2019
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. Some Volkswagen of America and Audi of America vehicles are equipped with ECU(s), in which a TP2.0 proprietary diagnostic communication protocol is implemented. The purpose of this document is to specify the requirements necessary to implement the communication protocol in an SAE J2534 interface.
Vehicle E E System Diagnostic Standards Committee
Information Report
Application Layer - DiagnosticsJ1939/73_201901 (Historical)01/31/2019
SAE J1939-73 Diagnostics Application Layer 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
Truck Bus Control and Communications Network Committee
Recommended Practice
Digital Annex of Diagnostic Trouble Code Definitions and Failure Type Byte DefinitionsJ2012DA_201812 (Historical)12/19/2018
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. Information in the excel spreadsheet will be updated several times annually, and the spreadsheet includes a column heading denoting which DTC have been updated in the current version.
Vehicle E E System Diagnostic Standards Committee
Supplement
J1939 Digital AnnexJ1939DA_201808 (Historical)08/02/2018
This document is intended to supplement the J1939 documents by offering the J1939 information in a form that can be sorted and search for easier use.
Truck Bus Control and Communications Network Committee
Supplement
Digital Annex of Medium/Heavy-Duty E/E Systems Diagnosis NomenclatureJ2403DA_201807 (Historical)07/16/2018
This document is intended to supplement SAE J2403 by providing the content of Table 1, Table 2, and Table 3 from SAE J2403 in a form that can be sorted and searched for easier use. It is NOT intended as a substitute for the actual document, and any discrepancies between this Digital Annex and the published SAE J2403 document must be resolved in favor of the published document. This document provides the content of Table 1 and Table 2 published in SAE J2403 into the single table in the 'Term' tab, while the 'Recommended Term Definitions' tab provides the content of Table 3 in SAE J2403 and the 'Glossary' tab provides the content of Table 4 in SAE J2403.
Truck Bus Control and Communications Network Committee
Supplement
Diagnostics Manufacturing: Strategies for OutsourcingTBMG-2867904/01/2018
When new assays or diagnostic tests are ready for commercialization, there can be tremendous hurdles to overcome, including significant investment in the infrastructure for automated manufacturing and test equipment and hiring and retaining highly trained personnel, as well as implementing high-end quality management systems. In addition, FDA, ISO, GMP, and other approvals or certifications may be required. This article examines the requirements for manufacturing these complex diagnostics as well as the critical factors to consider when selecting a manufacturer.
Magazine Article
Continuous Diagnostic System Predicts Industrial Robot FaultsTBMG-2780811/01/2017
Robots in production lines work with micrometer precision, unless a component fails. If, for example, the linear actuator used to precisely position a car body in front of an assembly robot is damaged, the robotic arm will no longer be able to position the car door exactly. The result is a misaligned door.
Magazine Article
Application Layer - DiagnosticsJ1939/73_201705 (Historical)05/12/2017
SAE J1939-73 Diagnostics Application Layer 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
Truck Bus Control and Communications Network Committee
Recommended Practice
Digital Annex of Medium/Heavy-Duty E/E Systems Diagnosis NomenclatureJ2403DA_201703 (Historical)03/30/2017
This document is intended to supplement SAE J2403 by providing the content of Table 1, Table 2, and Table 3 from SAE J2403 in a form that can be sorted and searched for easier use. It is NOT intended as a substitute for the actual document, and any discrepancies between this Digital Annex and the published SAE J2403 document must be resolved in favor of the published document. This document provides the content of Table 1 and Table 2 published in SAE J2403 into the single table in the 'Term' tab, while the 'Recommended Term Definitions' tab provides the content of Table 3 in SAE J2403 and the 'Glossary' tab provides the content of Table 4 in SAE J2403.
Truck Bus Control and Communications Network Committee
Supplement
Calculation of Failure Detection Probability on Safety Mechanisms of Correlated Sensor Signals According to ISO 26262 *CSP Meta QA Testing*2017-01-001503/28/2017
Functional safe products conforming to the ISO 26262 standard are getting more important for automotive applications wherein electronic takes more and more response for safety relevant operations. Consequently safety mechanisms are needed and implemented in order to reach defined functional safety targets. To prove their effectiveness diagnostic coverage provides a measurable quantity. A straight forward safety mechanism for sensor systems can be established by redundant signal paths measuring the same physical quantity and subsequently performing an independent output difference-check that decides if the data can be transmitted or an error message shall be sent. This paper focuses on the diagnostic coverage figure calculation of such data correlation-checks for linear sensors which are also shown in ISO 26262 part5:2011 ANNEX D2.10.2. This principle is widely used in automotive application like magnetic field sensing for steering-torque measurement, position detection of throttle
Granig, Wolfgang, Hammerschmidt, Dirk, Zangl, Hubert
Journal Article
J1979-DA, Digital Annex of E/E Diagnostic Test ModesJ1979DA_201702 (Historical)02/16/2017
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.
Vehicle E E System Diagnostic Standards Committee
Supplement
Digital Annex of Diagnostic Trouble Code Definitions and Failure Type Byte DefinitionsJ2012DA_201612 (Historical)12/13/2016
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. Information in the excel spreadsheet will be updated several times annually, and the spreadsheet includes a column heading denoting which DTC have been updated in the current version.
Vehicle E E System Diagnostic Standards Committee
Supplement
In-Flight Medical Diagnostic System for Space UseTBMG-2428604/01/2016
In the future, NASA astronauts journeying into deep space may be able to give themselves a health check-up using a small hand-held medical device being developed by a team of scientists from NASA’s Ames Research Center, the University of California, Davis, Lawrence Livermore National Laboratory, and Sandia National Laboratories.
Magazine Article
Digital Annex of Medium/Heavy-Duty E/E Systems Diagnosis NomenclatureJ2403DA_201602 (Historical)02/18/2016
This document is intended to supplement SAE J2403 by providing the content of Table 1, Table 2, and Table 3 from SAE J2403 in a form that can be sorted and searched for easier use. It is NOT intended as a substitute for the actual document, and any discrepancies between this Digital Annex and the published SAE J2403 document must be resolved in favor of the published document. This document provides the content of Table 1 and Table 2 published in SAE J2403 into the single table in the 'Term' tab, while the 'Recommended Term Definitions' tab provides the content of Table 3 in SAE J2403 and the 'Glossary' tab provides the content of Table 4 in SAE J2403.
Truck Bus Control and Communications Network Committee
Supplement
Linear Guides for the Next Generation of Medical MachinesTBMG-2369701/01/2016
Not too long ago, the motion systems used in medical and lab automation equipment had technical requirements that were easy to satisfy. These lightly loaded applications generally required simple point-to-point moves with low to moderate positioning accuracy requirements.
Magazine Article
Cat pipelayers offer power and comfort to operators15MEIP12_2612/01/2015
Independent, variable-speed winches for the boom and hook provide precise control, and an enhanced counterweight system ensures a low center of gravity in Caterpillar's new PL72, PL83, and PL87 pipelayers. A new ROPS (roll-over protection structure) provides added safety for both open and enclosed operator's stations. The new, purpose-built Pipelayer cab is now pressurized and incorporates new operator-comfort and convenience features. Cat says the new pipelayers were designed to offer the industry increased lift capacity, enhanced slope capability, ease of operation, and transportability. Rated lift capacity (at tipping point) for the PL72 is 90,000 lb (40,823 kg), 170,000 lb (77,111 kg) for the PL83, and 216,000 lb (97,972 kg) for the PL87. A non-suspended, elevated-sprocket undercarriage provides ample track-on-ground for added stability.
Broge, Jean L.
Magazine Article
Connected Vehicle Data Applied to Remote Diagnostics Methods for Heavy Duty Trucks2015-01-287909/29/2015
In recent years the commercial vehicle industry, specifically the heavy duty truck product line, has seen a rapid increase in the replacement of pure mechanical systems by electronic controlled systems. Engine, transmission, brakes, lighting, clusters, etc. are all monitored and/or controlled electronically. The adoption of electronic systems created a substantial change in the complexity of the heavy duty trucks systems. Currently Diagnostic Trouble Codes (DTC) displayed on instrument clusters, in the majority of the cases, are no longer generated by a single sensor/component failure, instead these DTCs are triggered by a system monitor flag, as the result of a below average performance or a failure of an entire system. This new level of complexity makes it very difficult for the current diagnostic methods and tools, to identify what is causing the equipment to operate below ideal conditions. As more and more Original Equipment Manufacturers (OEMs) are offering standard connectivity
Silva, Evandro
Technical Paper
Application Layer - DiagnosticsJ1939/73_201508 (Historical)08/28/2015
SAE J1939-73 Diagnostics Application Layer 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
Truck Bus Control and Communications Network Committee
Recommended Practice
Spotlight on Design Insight: Diagnostics and Prognostics: Telematics Deep DiveSOD-005/1S05/04/2015
“Spotlight on Design: Insight” features an in-depth look at the latest technology breakthroughs impacting mobility. Viewers are virtually taken to labs and research centers to learn how design engineers are enhancing product performance/reliability, reducing cost, improving quality, safety or environmental impact, and achieving regulatory compliance. Telematics, the convergence of telecommunications and informatics, uses electronic and computer technology built in to the vehicle to provide vehicle tracking, satellite navigation, wireless technology, and diagnostic information. In the episode “Diagnostics and Prognostics: Telematics Deep Dive” (8:09), an engineer from Delphi’s Telematics program discusses the advantages and challenges of telematics devices for the automotive industry, demonstrates the installation of an aftermarket telematics device, and shows how telematics can enhance diagnostics and preventative maintenance. This episode highlights multiple areas of interest
Video
Researchers Improve Magnetic-Field DetectorTBMG-2195404/15/2015
A Massachusetts Institute of Technology team has developed a new, ultrasensitive magnetic-field detector. The device could lead to miniaturized, battery-powered devices for medical imaging.
Magazine Article
Multivariate Time Series Search Capability to Identify Complex Patterns in Large DatasetsTBMG-2161803/01/2015
There exist many datasets that can be viewed as multivariate time series, such as the daily high temperature at a locality, sensor recordings in diagnostic systems and scientific data, and music and video recordings. These time series reside in large repositories, and there is often a need to search for particular time series exhibiting certain types of behaviors. Many current approaches to time series search are too slow on large repositories, or constrain the range of possible queries.
Magazine Article
Diagnostics-in-a-Suitcase Rapidly Detects EbolaTBMG-2135301/12/2015
Scientists in field laboratories who diagnose and deal with Ebola infections often work under challenging conditions. Researchers at the German Primate Center have developed Diagnostics-in-a-Suitcase, which contains all reagents and equipment to detect the Ebola virus within 15 minutes at point-of-need. Moreover, the mobile suitcase laboratory will be operated by an integrated solar panel and a power pack.
Magazine Article
J1979-DA, Digital Annex of E/E Diagnostic Test ModesJ1979DA_201406 (Historical)06/10/2014
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.
Vehicle E E System Diagnostic Standards Committee
Supplement
Digital Annex of Medium/Heavy-Duty E/E Systems Diagnosis NomenclatureJ2403DA_201402 (Historical)02/07/2014
This document is intended to supplement SAE J2403 by providing the content of Table 1, Table 2, and Table 3 from SAE J2403 in a form that can be sorted and searched for easier use. It is NOT intended as a substitute for the actual document, and any discrepancies between this Digital Annex and the published SAE J2403 document must be resolved in favor of the published document. This document provides the content of Table 1 and Table 2 published in SAE J2403 into the single table in the 'Term' tab, while the 'Recommended Term Definitions' tab provides the content of Table 3 in SAE J2403 and the 'Glossary' tab provides the content of Table 4 in SAE J2403.
Truck Bus Control and Communications Network Committee
Supplement
Planetary Polarization NephelometerTBMG-1894901/01/2014
Aerosols in planetary atmospheres have a significant impact on the energy balance of the planets, yet are often poorly characterized. An in situ instrument was developed that would provide more diagnostic information on the nature of aerosols it encountered if deployed on a planetary descent probe. Previous probe instruments only measured intensity phase functions, but much particle ambiguity remains with only this information. Adding the polarization phase function greatly reduces particle characteristic ambiguities, but also adds more challenges in designing a measurement approach. Laboratory instrumentation to measure intensity and polarization phase functions have existed since the early 1970s, but these instruments employed quarter-wave plates and Pockels cells to modulate the illuminating beam and the scattered light to isolate the intensity and polarization phase functions. Both of these components are unstable except under tightly controlled thermal conditions. This solution
Magazine Article
GM Implements Flexible Assembly System and Controls to Reduce WorkflowTBMG-1886912/01/2013
At the GF6 six-speed, front-wheel transmission line at General Motors Powertrain in Toledo, OH, a new front-wheel-drive transmission line for smaller, more fuel-efficient vehicles such as the Chevy Malibu and Chevy Cruze is currently ramping up to its initial goal of 2,200 units per day. A closer look reveals the method used to program this line, implement changeover, stage the workpiece flow, perform all machining and secondary operations, and assemble the finished transmissions.
Magazine Article
SCOTUS Rules Out Gene PatentsTBMG-1700308/01/2013
In June, academic researchers and clinical laboratories seeking to make a mark in the emerging fields of molecular diagnostics and personalized medicine were buoyed by the long-awaited ruling of the U.S. Supreme Court in the case of Association for Molecular Pathology (AMP) v. Myriad Genetics Inc., (2013).
Magazine Article
Application Layer - DiagnosticsJ1939/73_201307 (Historical)07/24/2013
SAE J1939-73 Diagnostics Application Layer 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
Truck Bus Control and Communications Network Committee
Recommended Practice
Automotive Engineering International 2013-07-1613AEID071607/16/2013
Gearing up for long lifetimes For transmission control engineers, a greater focus on reliability is prompting a shift to standards such as ISO 26262 and an improved diagnostics function that takes a broader view, looking at the overall system vs. individual components.
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