System Description: Notes

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. 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 M , located in the fuse and fusible link box).
To BCM terminal 55
Through 15A fuse [No. 22, located in the fuse block (J/B)]
To BCM terminal 42
Through 15A fuse [No. 22, located in the fuse block (J/B)]
To key switch terminal 2 (without intelligent key system)
Through 15A fuse [No. 22, located in the fuse block (J/B)].
To key switch and ignition knob switch terminal 3 (with intelligent key system) When key switch is ON (key is inserted in ignition key cylinder), power is supplied
Through key switch terminal 1 (without intelligent key system) or 4 (with intelligent key system).
To BCM terminal 37
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 M35, M45 and M85.
Then power window main switch (door lock and unlock switch) operation signal is supplied.
Through power window main switch terminal 14.
To BCM terminal 22
When the door is locked or unlocked with front power window switch (passenger side) (door lock and unlock switch), ground is supplied
To CPU of front power window switch (passenger side)
Through front power window switch (passenger side) (door lock and unlock switch) terminal 11
Through grounds M35, M45 and M85.
Then front power window switch (passenger side) (door lock and unlock switch) operation signal is supplied
Through front power window switch (passenger side) terminal 16.
To BCM terminal 22
When the door is locked with front door key cylinder switch, ground is supplied
To power window main switch terminal 4
Through key cylinder switch terminals 1 and 5
Through grounds M35, M45 and M85.
Then key cylinder switch operation signal (lock) is supplied
Through power window main switch terminal 14.
To BCM terminal 22
When the door is unlocked with key cylinder switch, ground is supplied
To power window main switch terminal 6
Through key cylinder switch terminal 6 and 5
Through grounds M35, M45 and M85.
Then key cylinder switch operation signal (unlock) is supplied
Through power window main switch terminal 14.
To BCM terminal 22
BCM is connected to power window main switch and front power window switch (passenger side) as serial link.

When the front door switch (driver side) is ON (door is OPEN), ground is supplied
To BCM terminal 62
Through front door switch (driver side) terminal 1
Through front door switch (driver side) case ground.
When the front door switch (passenger side) is ON (door is OPEN), ground is supplied
To BCM terminal 12
Through front door switch (passenger side) terminal 1
Through front door switch (passenger side) case ground.
When the rear door switch LH is ON (door is OPEN), ground is supplied
To BCM terminal 63
Through front door switch LH terminal 1
Through rear door switch LH case ground.
When the rear door switch RH is ON (door is OPEN), ground is supplied
To BCM terminal 13
Through front door switch RH terminal 1
Through rear door switch RH case ground.
When the back door switch is ON (door is OPEN), ground is supplied
To BCM terminal 58
Through back door closure motor (door switch) terminal 7 and 8
Through grounds B15 and B45.