WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect the rocker arm oil control solenoid connector (A).
Fig 1: Rocker Arm Oil Control Solenoid Connector With Torque Specification
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the rocker arm oil control solenoid (B).
Install the parts in the reverse order of removal with a new O-ring (C).