System Description: Function

WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

Power is supplied at all times

through 50A fuse (letter F , located in the fuse and fusible link box)
to BCM terminal 7
through 10A fuse [No. 21, located in the fuse block (J/B)]
to key switch and key lock solenoid terminal 3, and
to combination meter terminal 21
through 10A fuse [No. 19, located in the fuse block (J/B)]
to unified meter and A/C amp. terminal 21.

When ignition switch ON or START position, power is supplied

through 10A fuse [No. 1, located in the fuse block (J/B)]
to BCM terminal 35
through 10A fuse [No. 12, located in the fuse block (J/B)]
to unified meter and A/C amp. terminal 22
through 10A fuse [No. 14, located in the fuse block (J/B)]
to combination meter terminal 20.

Ground is supplied

to BCM terminal 8
through body grounds E13, E26 and E28
to unified meter and A/C amp. terminals 29 and 30, and
to combination meter terminals 22, 23 and 24
through body grounds M14 and M78.

NOTE: When ignition key warning chime, light warning chime, and seat belt warning chime should be conducted at the same time, the priorities for each chime are the following.

Light warning chime.
Ignition key warning chime
Seat belt warning chime