Technical Insight
Building Vehicle Health Management Functions with SAE JA6268 Methodology BK RAMESH
IntelliPredikt Technologies Background IVHM (integrated health management) systems are ushering in a new paradigm for diagnosis and prognosis with the concept of “Health Ready Component” Presently, the vehicle systems are primarily operating in the diagnosis-only paradigm where the focus was to facilitate the detection and identification of the root cause(s) once a failure had oc-curred. This has found limitations in effective diagnostics resulting in No Trouble Found (NTF) cases adding to warranty cost and customer dissatisfaction. It is imperative to enhance the diagnostics coverage and support prognosis, to facilitate health monitoring and tracking of system degradation severity to prevent a given component from degrading to the point where it goes outside its operational performance envelope. This is possible with the big data cloud computing, predictive analytics and Advanced telematics for Connected Vehicles. There are barriers to implement this and mainly contributed by
Figure 2: Source Ref: SAE JA6268 Specification: April 2018
• Multiple players: T1, T2, OEM, operators, individual owners and users • Evolving vehicle architectures • Multiple variants with potential low volume • High variation of diagnostic and service procedures • High variation in technician skills
Figure 1: Source : T. Felke, Future of Vehicle Health Management with SAE JA6268
10 | Telematics Wire | February 2022
• OEM customisation beyond standard • Lack of uniformed signals, nomenclature The above figure shows how the interoperability among the IVHM functions are hampered by differences in data exchange among the stake holders. The SAE JA6268 specification from HRCS consortium addresses existing barriers to the suc-cessful implementation of IVHM technology for the automotive, commercial, and military vehi-cle sectors. Original Equipment Manufacturers (OEMs) in all these sectors are heavily depend-ent upon a large number of component and system suppliers, many of which are shared across these sectors. The advent of IVHM technology has accentuated the need for a new model that encourages bet-ter coordination and communication between the OEM and its suppliers in order to achieve the operational, safety and economic benefits desired.
