Following a 24-hour stoppage which had been triggered by a system glitch, Japanese automaker Toyota has announced that operations will resume at its domestic assembly plants on Wednesday. The disruption, which began Monday, and shut down all processing of orders for components, continues to be investigated by the company, with no cause yet positively identified.

In its statement the company said that it expects operations will return to normal at each of the company’s 14 plants beginning at the start of the second shift on Wednesday. Reuter’s calculations indicate that combined, the plants are responsible for about a third of the automaker’s global production. Last year the automaker delivered nearly 10.5 million cars worldwide.

Toyota said, “It is our understanding that the malfunction of the system was not caused by a cyberattack. However, we will continue to investigate the cause. We would like to apologize once again to our customers, suppliers, and related parties for any inconvenience caused by the suspension of operations.”

In 2022, Toyota was forced to suspend operations for a day due to a cyberattack on a supplier which prevented the company from  ordering parts. The company was able to resume operations then by employing a back-up network.