Author: DSA Daten- und Systemtechnik GmbH
The introduction of new functionalities such as autonomous driving or connectivity with external entertainment and IT systems is leading to fundamental technical adaptations in vehicle networks. These innovations, however, require new standards in vehicle diagnostics.
Up to now, vehicle diagnostics has focused on testing hardware components such as control units and sensors. Here, the focus is on reading error codes and values, checking actuators and performing software updates and parameter changes.
With the implementation of the new vehicle functionalities, HPCs (high-performance computers) are becoming part of the vehicle network. These powerful multi-core and multithreaded computers have complex operating systems and software components. As a result, a new diagnostic protocol is required to analyze and diagnose not only the hardware components but also the application software running on HPCs.
New technologies such as Wi-Fi and mobile broadband (4G, 5G) allow remote access to the vehicle diagnostic interface. Remote diagnostics, software updates, coding and parameterization are now feasible without a physical connection to the vehicle.
As a member of the ASAM workgroup, DSA is researching and developing a new standard for vehicle diagnostics. The aim of the project, which is known as Service Oriented Vehicle Diagnostics (SOVD), is to ensure that the new standard can be used to enable both the new HPC-related diagnosis and the previous conventional diagnosis.
In particular, the following three scenarios are considered as use cases for the new standard: Proximity diagnosis, remote diagnosis and onboard diagnosis.