The validation process is an iterative process that helps refine the design and fix any unforeseen problems from integrating the design pieces together . FMEA and worst-case analysis give great indications of design suitability , but since there are always parasitic parameters and real-world interactions that are time-consuming and expensive to model , checking the design becomes easier through testing.

The systems requirement defines what system level tests are appropriate for the development and the test strategy describes the basic functional/parametric tests and breaks validation tests into pre-DV, DV, PV, and production phases. As development progresses, additional test documentation is created such as a DV Plan, a Production Test Requirement, and a variety of test scripts.

Testing standards have been developed to help designers and OEMs have confidence that the product will survive the environmental conditions to which they will be exposed . Dana uses typical automotive test standards when doing module validation. Customer standards and standards outside of the automotive industry (such as aviation ) have also been used for custom designed product.