Prerequisites: Knowledge about software development for automotive systems
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On-Board or Off-Board Diagnostics
First of all, in this training, Diagnostics, you are going to learn the key differences between On-Board and Off-Board Diagnostics. What should we understand from both terms? By which mean and purpose do we need both applications? Self-Diagnosis of each ECU, reaction of the system, elimination of errors, diagnostic testing, documentation of diagnostics (ODX), implementing diagnostic services and of course diagnostic communication protocol: UDS (Unified Diagnostic Services).
ISO 14229-1:2013 specifies data link independent requirements of diagnostic services, which allow a diagnostic tester (client) to control diagnostic functions in an on-vehicle Electronic Control Unit (ECU, server) such as an electronic fuel injection, automatic gear box, anti-lock braking system, etc. connected to a serial data link embedded in a road vehicle.
It specifies generic services, which allow the diagnostic tester (client) to stop or to resume non-diagnostic message transmission on the data link.
Standard Definitions (i.e. DTC – Diagnostic Trouble Code)
On-Board versus Off-Board Diagnostics
A Communication Protocol for Diagnostic Testing: UDS (Unified Diagnostics Services)
Transport protocols: CAN vs Flexray
Implementation of Diagnostic Services
Benefits of ODX Exchange: A special standardized description file that supplies all needed diagnostic information and enables to exchange information between OEMs and Suppliers
Development and Diagnostic Testing with an or more ECU(s)
AUTOSAR and Diagnostic-specific BSWs (Basic Software):
DCM: Diagnostic Communication Manager
DEM: Diagnostic Event Manager
FIM: Function Inhibition Manager
On-Board Diagnostic II Certification and Documentation
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