Power Supply And Ground Circuit

WARNING: This page is about a different car, the 2006 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.

Power is supplied at all times

through 10A fuse [No.19, located in the fuse block (J/B)]
to combination meter (security indicator lamp) terminal 3 and
through 50A fusible link (letter g, located in the fuse and fusible link box)
to BCM (body control module) terminal 70
through 10A fuse [No. 18, located in the fuse block (J/B)]
to BCM terminal 57
through 15A fuse (No. 30, located in the fuse and fusible link box)
to horn relay terminal 2
through 20A fuse (No. 52, located in the IPDM E/R) and
through 20A fuse (No. 53, located in the IPDM E/R),
to IPDM E/R internal CPU.
With the ignition switch in the ACC or ON position, power is supplied
through 10A fuse [No. 4, located in the fuse block (J/B)]
to BCM terminal 11.
Ground is supplied
to BCM terminal 67
through body grounds M57, M61 and M79 and
to IPDM E/R terminals 38 and 59
through body ground E9, E15 and E24.