Legislation, e.g. for on-board diagnostics (OBD II), is driving the implementation of diagnostic functions in automotive ECU development. These functions require fault simulation during testing. Development and test organizations are looking for ways to improve their efficiency, replacing manual testing wherever possible. And comprehensive, automated fault simulation can help to increase the depth and breadth of test coverage in general. As as result, automated fault simulation plays an increasingly important role in automotive ECU testing.

Sometimes fault simulation shall be performed on a HiL systems, sometimes it needs to be performed stand-alone. And fault simulation is not required for every test run. Hence, a fault simulation module shall offer a scalable and modular architecture, so that they can be connected to and disconnected from HiL systems easily as required.
 
The compact ES4440 Fault Simulation Module meets these key requirements, allowing interactive stand-alone operation as well as real-time fault simulation on HiL systems.