System Description: Compass

WARNING: This page is about a different car, the 2018 Infiniti Q60. However, it is still accessible from the selected car via links, so may be relevant.

NAVI control unit acquires direction information from GPS antenna, and transmits it to the display control unit via USB communication.
Display control unit transmits direction information which is acquired from NAVI control unit to combination meter via AV communication.
When direction information is acquired, combination meter displays it on information display.