System Description: Notes

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

Power is supplied at all times

through 50A fusible link (letter F, located in the fuse and fusible link box).
to BCM terminal 55,
through 10A fuse [No. 18, located in the fuse block (J/B)]
to BCM terminal 42,
through 10A fuse [No. 21, located in the fuse block (J/B)]
to key switch terminal 2. (without Intelligent Key)
through 15A fuse [No. 33, located in the fuse block (J/B)]
to key switch and ignition knob switch terminal 3. (with Intelligent Key)
through 10A fuse [No. 19, located in the fuse block (J/B)]
to passenger side select unlock relay terminal 2. (with Intelligent Key)

When key switch is ON (key is inserted in ignition key cylinder), power is supplied

through key switch terminal 1 (Without Intelligent Key)
through key switch and ignition switch terminal 4 (With Intelligent Key)
to BCM terminal 37.

Ground is supplied

to BCM terminal 52
through body grounds M30 and M66.

When the door is locked or unlocked with power window main switch (door lock and unlock switch), ground is supplied

to CPU of power window main switch
through power window main switch (door lock and unlock switch) terminal 17
through grounds M30 and M66.

Then power window main switch (door lock and unlock switch) operation signal is sent.

to BCM terminal 22
from power window main switch (door lock and unlock switch) terminal 14

When the door is locked or unlocked with power window sub-switch (front passenger side) (door lock and unlock switch), ground is supplied

to CPU of power window sub-switch
through power window sub-switch (front passenger side) (door lock and unlock switch) terminal 11
through grounds M30 and M66.

Then power window sub-switch (front passenger side) (door lock and unlock switch) operation signal is sent

to BCM terminal 22
from power window sub-switch (front passenger side) (door lock and unlock switch) terminal 16.

When the door is locked with front door key cylinder switch (driver side), ground is supplied

to CPU of power window main switch
through power window main switch (door lock and unlock switch) terminal 4
through front door key cylinder switch (driver side) terminals 1 and 2
through grounds M30 and M66.

Then front door key cylinder switch (driver side) operation signal (lock) is sent

to BCM terminal 22
from power window main switch (door lock and unlock switch) terminal 14

When the door is unlocked with front door key cylinder switch (driver side), ground is supplied

to CPU of power window main switch
through power window main switch (door lock and unlock switch) terminal 6
through front door key cylinder switch (driver side) terminals 3 and 2
through grounds M30 and M66.

Then front door key cylinder switch (driver side) operation signal (unlock) is sent

to BCM terminal 22
from power window main switch (door lock and unlock switch) terminal 14

BCM is connected to power window main switch and power window sub-switch as serial link.