Jikotei Kanketsu

Japanese term meaning 'complete your own process' or 'perfection at every step.' Core Toyota principle where each process step must ensure perfect quality before passing work to the next process. The philosophy is that no defects should flow forward—each worker is responsible for verifying their own work meets standards and has authority to stop production if quality issues arise. Different from inspection-based quality where defects are caught later. Emphasizes built-in quality (Jidoka), source inspection, and zero-defect mentality. Prevents defects from multiplying downstream and reduces costly rework. Foundation of Toyota's quality system and key to achieving high quality with minimal inspection.