AV and NAVI Control Unit

The gyro (angular speed sensor) and the DVD-ROM drive are built-in units that control the navigation functions.
Signals are received from the gyro, the vehicle speed sensor, and the GPS antenna. Vehicle location is determined by combining this data with the data contained in the DVD-ROM map. Locational information is shown on liquid crystal display panel.

Fig 1: Identifying AV And NAVI Control Unit
Courtesy of NISSAN MOTOR CO., U.S.A.