First, the 16949 is ISO9000 2000 edition is based, therefore, 16949 need to "process approach" philosophy and PDCA technology, methods and documentation requirements in the form of a great transformation. The audit method also from the department / elements into a "process" oriented. Second, a lot of content and a wide range of new changes to indicate the quality assurance system based on QS9000 to be able to obtain ISO / TS16949: 2002 registered quality management system has a lot of work to do. And QS9000 in detail about the different 80. For example: The internal audit requirements are greatly enhanced, mandatory requirements for the manufacturing process audit, to use a specific checklist and auditor qualification within the proposed requirements. Third, IATF requirements, must have a minimum of 12 months' running track record "and records of internal audits and management reviews the first 12 months of planning and results. Fourth, there must be a list of qualified internal auditor and a list of customer / specific customer requirements.