As stated earlier, the two pillars that support the Toyota production system is JIT and Autonomation. To achieve JIT perfect, 100 percent defect-free unit must flow into the following process, and this flow must be rhythmic without Interruption. Therefore, quality control must live together with the JIT operations throughout the Kanban system.Autonomation means making a mechanism to prevent the defective goods were produced en masse in the machine or product line. Autonomation word does not mean automation, but it is checked in the autonomous existence of abnormal things in a process.

Autonomous machine is a machine that given the automatic stop device. In Toyota factories, nearly all the machines are autonomous so that the mass production of defective goods can be prevented and damage to the machine automatically checked.Mechanisms to prevent product defects by placing a variety of inspection tools in a variety of equipment and instruments is called foolproof. (“Bakayoke” or “Pokayoke”).

Toyota to expand production lines with Autonomasi of feedback mechanisms. If something abnormal tarjadi in production lines, workers stop the line by pressing the knob shut-off, thereby stopping the whole line.