System Description: Notes

WARNING: This page is about a different car, the 2004 Nissan Titan. 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 70 and
Through 10A fuse [No. 19, located in the fuse block (J/B)]
To key switch and key lock solenoid terminal 3
Through 15A fuse [No. 22, located in the fuse block (J/B)]
To BCM terminal 57.

With ignition key inserted, power is supplied:

Through key switch and key lock solenoid terminal 4
To BCM terminal 37.

Ground is supplied to terminal 67 of BCM through body grounds M57, M61 and M79. When the door is locked or unlocked with main power window and door lock/unlock switch, ground is supplied:

To CPU of main power window and door lock/unlock switch
Through main power window and door lock/unlock switch terminal 15 (King Cab) or 17 (Crew Cab)
Through grounds M57, M61 and M79.

Then main power window and door lock/unlock switch operation signal is supplied:

To BCM terminal 22
Through main power window and door lock/unlock switch terminal 12 (King Cab) or 14 (Crew Cab).

When the door is locked or unlocked with power window and door lock/unlock switch RH, ground is supplied:

To CPU of power window and door lock/unlock switch RH
Through power window and door lock/unlock switch RH terminal 11
Through grounds M57, M61 and M79.

Then power window and door lock/unlock switch RH operation signal is supplied:

To BCM terminal 22
Through power window and door lock/unlock switch RH terminal 16.

When the door is locked with front door lock actuator LH (key cylinder switch), ground is supplied:

To main power window and door lock/unlock switch terminal 6 (King Cab) or 4 (Crew Cab)
Through key cylinder switch terminals 1 and 5
Through grounds M57, M61 and M79.

Then key cylinder switch operation signal is supplied:

To BCM terminal 22
Through main power window and door lock/unlock switch terminal 12 (King Cab) or 14 (Crew Cab).

When the door is unlocked with front door lock actuator LH (key cylinder switch), ground is supplied:

To main power window and door lock/unlock switch terminal 7 (King Cab) or 6 (Crew Cab)
Through key cylinder switch terminals 6 and 5
Through grounds M57, M61 and M79.

Then key cylinder switch operation signal is supplied:

To BCM terminal 22
Through main power window and door lock/unlock switch terminal 12 (King Cab) or 14 (Crew Cab).