Toyota production system to integrate and achieve different goals (ie controlling the quantity, quality assurance, and respect for humanity) while pursuing the ultimate goal of reducing costs. Repair activity is a fundamental element of the Toyota production system; is what makes the Toyota production system really can work. Each employee mempuyai opportunity to give advice and propose improvements through a small group called Quality Control. The process of giving such suggestions enable improvements in control by adjusting the number of routine operations to changes in cycle time, improvements in quality assurance to prevent the recurrence of work disability and the machine breaks, and in honor of humanity by allowing each worker to participate in the production process.