Power Supply And Ground

WARNING: This page is about a different car, the 2004 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.

Power is supplied at all times

through 15A fuse [No. 52, located in fuse, fusible link and relay block (J/B)]
to AV and NAVI control unit terminals 2 and 3, and
to display terminals 21 and 23.

When ignition switch is in ACC or ON position, power is supplied

through 10A fuse [No. 21, located in fuse block (J/B) NO. 1]
to AV and NAVI control unit terminal 6
to display terminal 19, and
to multifunction switch terminal 1.

When ignition switch is in ON or START position, power is supplied

through 10 A fuse [No. 1, located in fuse block (J/B) NO. 1]
to AV and NAVI control unit terminal 26.

Ground is supplied

to AV and NAVI control unit terminal 1 and 4
through body grounds B17 and B57, and
to multifunction switch terminal 2 and
to display terminals 22 and 24
through body grounds M24 and M114.