Toyota Motor Corp. and other major Japanese carmakers operating in China said Monday they have partially resumed operations suspended by the coronavirus outbreak.

Mazda Motor Corp., Honda Motor Co. and Nissan Motor Co. all said they had restarted some work.

Toyota said that of its four vehicle plants in China, those in Changchun and Guangzhou resumed manufacturing. The factory in Tianjin will resume output Tuesday while the facility in Chengdu will come back online Feb. 24 or later, according to the automaker.

"As we will only know the situation of local parts makers when we resume operations at our factories, we want to operate them carefully with safety the top priority," Toyota President Akio Toyoda told reporters.

Mazda rebooted its vehicle plant in Nanjing at reduced output, aiming for full operation gradually in line with the availability of parts. It had previously aimed for a Feb. 12 restart at the earliest.

The automaker is also preparing to resume operations at its engine factory in Nanjing, while its vehicle plant in Changchun is expected to restart in the near future.