LONDON, Sept 19 - The dollar held steady, close to the previous session's 2-1/2 year low against the yen on Friday as traders waited to see what would emerge on currency policy from this weekend's meeting of G7 ministers in Dubai. On Thursday the dollar dropped below 115.00 yen , thought to be a key level below which Japan would not let the dollar fall even though Tokyo is expected to face criticism from its G7 partners for its policy of curtailing yen strength. The dollar was steady from late New York levels at 115.35 yen and unchanged on the day at $1.1249 per euro . International Monetary Fund managing director Horst Koehler holds a news conference at 1230 GMT in Dubai. The IMF on Thursday warned the dollar may be in for further weakness and developing Asian economies were better placed then Europe or Japan to bear the brunt of its fall. Finance ministers from the Group of Seven major industrialised nations meet in Dubai on Saturday. A G7 source said on Friday it will be difficult for ministers to reach a common position on Asian currencies. No major U.S. data is expected on Friday. German producer prices rose at their sharpest rate in two years in August, climbing 2.1 percent year on year. European Central Bank council member Guy Quaden told a newspaper there were few reasons to raise or lower euro zone interest rates.//