AUDUSD is testing 0.8905 key support, a breakdown below this level will indicate that the upward movement from 0.8315 (Jul 1 low) has completed at 0.9221 already, then the following downward movement could bring price to 0.8600-0.8700 area. Resistance is at 0.9010, above this level would suggest that a cycle bottom is being formed on 4-hour chart, then another rise towards 0.9221 could be seen.