In daily operation, ECUs in the vehicle are exposed to a wide range of environmental influences, such as vibrations, strongly fluctuating ambient temperatures and high humidity. The components must therefore be able to handle all conceivable faults. For the test, these faults are simulated on the ECU pin and the respective behavior and diagnostic entry documented. Typically, such fault simulations are used for function tests during development, for testing, release and validation of ECUs and components, as well as for integration validation during HiL testing or at the Functional Mock-Up (FMU).