Toyota Motor Corp. is expected to report an operating loss of about ¥100 billion for the second half of the current fiscal year, sources said Saturday.

The expected downward revision in the October-March period, to be announced next month or later, stems from exacerbating declines in global auto sales and the yen's continued appreciation against the dollar and euro, the sources said.

"(Toyota's) global auto sales will be reduced about 1 million units from the projection made in November," one of the sources said.