Transfer Solenoid
WARNING: This page is about a different car, the 2005 Subaru Outback and 2005 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
The transfer solenoid is mounted on the control valve and is directly controlled by electrical current instructions from the TCM. This ensures optimum AWD control in accordance with the varying road conditions by engaging/releasing the transfer clutch.