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Real time embedded automotive control systems permit vehicles to operate within established emissions, safety, and passenger comfort guidelines. The increasing size, functionality, and complexity of controller software requires the development of rigorous verification methodologies to demonstrate compliance with software and systems requirements. To anticipate the needs of vehicle manufacturers, Delco Electronics is reviewing their internal software verification process. In this paper, one strategy for the methodological testing of automotive controller software is presented and demonstrated. To initiate the testing process, systems requirements are reviewed and used to create test plans and procedures. These materials, cross-referenced to the software and systems requirements, outline the type of tests to be performed, the test procedures, and the expected results.