Market in the United States is quite shaken after the re;eased data released economic data looks weak and beyond they're expectations. Thats Why yesterday US Dolar during London Market close gotted weakeness againts Yen so the result that times USD hit the Support. 3 @ 85.16 and after approximatelly 1 hour latter Our Target (10 Pips to 20 Pips) gonna hit; here's the screenshoot :

Now for today, here are important intraday trading levels for USD/JPY :
Resistance. 3 : 85.83.
Resistance. 2 : 85.66.
Resistance. 1 : 85.50.
Support. 1 : 85.29.
Support. 2 : 85.12.
Support. 3 : 84.95.
Suggestions:
Taking Scalp for 10 pips to 20 Pips nearly Support. 3 for BUY and Resistance. 3 for SELL; but please observe if this pair after the break of Support. 3 or Resistance. 3 is still going for 47 pips - 50 pips, then this pair is likley to continue the movement, so please change the position before.