TOKYO : Global ratings agency Moody's on Friday cut Nissan Motor Co Ltd's corporate family rating to Ba2 from Ba1, as the embattled Japanese automaker seeks to push through a turnaround. The outlook remains negative, Moody's said. "The downgrade reflects the deterioration and expectation for continuing weakness in Nissan's credit profile, most notably in its automotive free cash flow and EBIT margin," Dean Enjo, Moody's ratings vice president and senior analyst, said in a statement. Japan's