DTC P1606: VVEL Control Module: Description
WARNING: This page is about a different car, the 2010 Nissan 370Z. However, it is still accessible from the selected car via links, so may be relevant.
The VVEL control module consists of a microcomputer and connectors for signal input and output and for power supply. The VVEL control module controls VVEL system.
Courtesy of NISSAN MOTOR CO., U.S.A.