Dollar tilted lower in Asian trade off late December highs against yen for another session, amid a lack of data from Japan while the US market shuts down for the Martin Luther King bank holiday.
As of 05:54 GMT, USD/JPY shed 0.20% to 109.56, with an intraday low at 109.48, and a high at 109.77.
Bank of Japan is expected to release its monetary policy report today, with analysts expecting no change for interest rates at minus 0.10% for the 19th meeting in a row after recent data showed a slowed growth and a weakened economy.