* Euro under pressure as investors await ECB meeting
* Dollar gets a slight reprieve as U.S. yields rise
* Rally in commodity currencies takes breather
By Lisa Twaronite and Ian Chua
TOKYO/SYDNEY, April 21 (Reuters) - The euro wavered on Thursday, well off its overnight peak as investors adjusted position ahead of a policy meeting by the European Central Bank later this session.
The ECB is widely expected to hold interest rates unchanged at record lows, but President Mario Draghi is likely to drive home the case for ultra-loose monetary policy.
"The task now for the ECB lies more along the lines of promoting the effectiveness of these new expansionary policies and assertion that the Bank can do more if needed," said Rodrigo Catril, FX strategist at National Australia Bank.
Last month, while the ECB delivered aggressive easing measures, the euro perversely rallied after Draghi said there was probably no need for more rate cuts if the latest stimulus worked.
The euro stood at $1.1293, compared with $1.1358 in Asian trading on Wednesday and well below its overnight peak of $1.1388. Against the yen, it edged down about 0.1 percent to 123.98.
With three major central bank meetings looming, market participants cited a lack of market conviction on direction bets. The Federal Reserve is scheduled to hold its policy review on April 26-27, while the Bank of Japan will meet on April 28.
BOJ officials are growing more receptive to stepping up monetary easing measures by buying more ETFs invested in shares, as weak global growth threaten the country's fragile economic recovery, sources have told Reuters.
On Wednesday, BOJ Governor Haruhiko Kuroda said the central bank's presence in the exchange-traded fund (ETF) market is "not too big," signalling that topping up purchases of ETFs could be a real, near-term option.
But the BOJ could hold off on additional steps for now. Despite the yen's recent appreciation, a Reuters poll published on Thursday showed most Japan companies still expect to maintain or see a small increase in operating profits this financial year.
While no action is expected from the Fed, traders will be looking for clues in its policy statement that the central bank is preparing markets for a June interest rate hike.
Fed Chair Janet Yellen has repeatedly said the Fed will be cautious in tightening policy, prompting markets to barely price in a rate hike this year.
U.S. Treasury yields have fallen as a result, though they hit three-week highs on Wednesday as oil and stocks gained, which helped the dollar.
"This week has been all about the risk rally," said Bart Wakabayashi, head of FX sales at State Street Global Markets in Hong Kong.