Toyota Motor Corp. will extend a partial production halt in Japan through Wednesday following an explosion at a supplier this week, the automaker said Tuesday, the latest in a series of problems highlighting issues related to the manufacturing system at the world's largest carmaker.Toyota has halted 10 production lines at six factories in central Japan as it is having difficulty procuring springs used for suspension and other car parts.The automaker will keep the affected production lines shut through Wednesday and has decided to stop operations at another plant in the region in addition to…READ FULL ARTICLE