All changes were reported on a Process Change Form (PCF) and distributed to Toyota Motor Corporation in Japan, Toyota Motor Sales in California and all involved Japan and North American affiliates. The procedure changes were reviewed by each Toyota affiliate. The final approval was granted by Toyota Motor Corporation’s Engineering Department in Japan. After careful review, TMC sent out a Technical Instruction (TI) form, informing all affiliates of the approved changes. A start date for the changes was included, as well as provisions for any support change, such as Information Services. Finally, the changes were to be incorporated into the TMS QA Manual