USD/JPY ended the day flat on Wall Street around as markets moved into consolidation ahead of the Federal Reserve. At the time of writing, USD/JPY is trading at 130.16 and has traded between 129.69 and 130.29. The pair is correcting a bullish impulse in the daily charts that was made when the US dollar rallied to 20-year highs last week.
The following illustrates the price in the daily chart and prospects of a deeper retracement:

The W-formation is a reversion pattern and so far, the price has corrected into a 50% mean reversion area which is holding up as support. A break of here would be expected to see the price challenge the old highs and presumed support near a 61.8% golden ratio of around 128.60.