System Function Diagnosis

Assystem offers consistent support for system function diagnostics, from specification, testing and nomination to series use. We are qualified for these tasks due to our OEM-specific process knowledge and comprehensive expertise in bus systems, interfaces for on-board diagnosis and ECU-domains such as body, infotainment, chassis or power train. We are a systems house and also offer OEM-specific support and support Tier-1 companies from the start of their projects in planning, implementation and validating system functions.

Where we make the difference

  • More than 15 years of knowledge in diagnostis-specific ECU development
  • Cooperation on ISO14229 (UDS)
  • Test process and test automation expertise with ISTQB-certified test engineers
  • Diagnostic test houses, e.g. for comprehensive infotainment diagnosis
  • Networking of diagnosis teams with adjoining areas such as our AUTOSAR competence centre
  • System house with OEM-specific support concepts for Tier-1 companies


  • Engineering support and consulting for all areas of system functions - from diagnostic specifications to series application
  • Development and integration of diagnostic functions
  • Test concepts, test specifications and test automation for diagnostic functions
  • Development of diagnostic tools, e.g. ODX-Differ, test automation

Assysten Germany - A new path to growth