2006 INFINITI QX56 Factory Service Manual

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Page 2537 of 3383

INFINITI QX56 2006 Factory Service Manual LT-130
TRAILER TOW
Revision: November 20092006 QX56
Wiring Diagram — T/TOW —EKS00BB4
WKWA3665E

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INFINITI QX56 2006 Factory Service Manual TRAILER TOWLT-131
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WKWA3666E

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INFINITI QX56 2006 Factory Service Manual LT-132
TRAILER TOW
Revision: November 20092006 QX56
WKWA3667E

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INFINITI QX56 2006 Factory Service Manual TRAILER TOWLT-133
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WKWA3668E

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INFINITI QX56 2006 Factory Service Manual LT-134
INTERIOR ROOM LAMP
Revision: November 20092006 QX56
INTERIOR ROOM LAMPPFP:26410
Component Parts and Harness Connector LocationEKS00BB5
WKIA3555E

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INFINITI QX56 2006 Factory Service Manual INTERIOR ROOM LAMPLT-135
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System DescriptionEKS00BB6
When room lamp and personal lamp switch is in DOOR position, room lamp and personal lamp

INTERIOR ROOM LAMPLT-135
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System DescriptionEKS00BB6
When room lamp and personal lamp switch is in DOOR position, room lamp and personal lamp ON/OFF is
controlled by timer according to signals from switches including key switch and key lock solenoid, front door
switch LH, unlock signal from keyfob, door lock and unlock switch, front door lock assembly LH (key cylinder
switch), ignition switch, and glass hatch ajar switch.
When room lamp and personal lamp turns ON, there is a gradual brightening over 1 second. When room lamp
and personal lamp turns OFF, there is a gradual dimming over 1 second.
The room lamp and personal lamp timer is controlled by the BCM (body control module).
Room lamp and personal lamp timer control settings can be changed with CONSULT-II.
Ignition keyhole illumination turns ON when front door LH is opened (door switch ON) or key is removed from
key cylinder. Illumination turns OFF when front door LH is closed (door switch OFF).
Step and foot lamps turn ON when front or rear doors are opened (door switch ON). Lamps turn OFF when
front and rear doors are closed (all door switches OFF).
POWER SUPPLY AND GROUND
Power is supplied at all times
through 10A fuse [No. 19, located in the fuse block (J/B)]
to key switch and key lock solenoid terminal 3, and
through 15A fuse [No. 22, located in the fuse block (J/B)]
to BCM terminal 57, and
through 50A fusible link (letter f , located in the fuse and fusible link box)
to BCM terminal 70.
When the key is inserted in key switch and key lock solenoid, power is supplied
through the key switch and key lock solenoid terminal 4
to BCM terminal 37.
With the ignition switch in the ON or START position, power is supplied
through 10A fuse (No. 59, located in the fuse and relay box)
to BCM terminal 38.
Ground is supplied
to BCM terminal 67
through grounds M57, M61 and M79.
When the front door LH is opened, ground is supplied
to BCM terminal 47
through case ground of front door switch LH.
When the front door RH is opened, ground is supplied
to BCM terminal 12
through case ground of front door switch RH.
When the rear door LH is opened, ground is supplied
to BCM terminal 48
through case ground of rear door switch LH.
When the rear door RH is opened, ground is supplied
to BCM terminal 13
through case ground of rear door switch RH.
When the liftgate is opened, ground is supplied
to BCM terminal 43
through back door latch (door ajar switch) terminal 7
through back door latch (door ajar switch) terminal 8
through grounds B7 and B19.
When the glass hatch is opened, ground is supplied
to BCM terminal 42
through case ground of glass hatch ajar switch.

Page 2543 of 3383

INFINITI QX56 2006 Factory Service Manual LT-136
INTERIOR ROOM LAMP
Revision: November 20092006 QX56
When the front door LH or front door RH door is unlocked by the door lock and unlock switch, BCM receives
serial data
to BCM terminal 22
th

LT-136
INTERIOR ROOM LAMP
Revision: November 20092006 QX56
When the front door LH or front door RH door is unlocked by the door lock and unlock switch, BCM receives
serial data
to BCM terminal 22
through main power window and door lock/unlock switch terminal 14 or power window and door lock/
unlock switch RH terminal 16
through main power window and door lock/unlock switch terminal 17 or power window and door lock/
unlock switch RH terminal 11
through grounds M57, M61 and M79.
When the front door LH is unlocked by the key, the BCM receives serial data
to BCM terminal 22
through main power window and door lock/unlock switch terminal 14
through main power window and door lock/unlock switch terminal 6
through front door lock assembly LH (key cylinder switch) terminal 6
through front door lock assembly LH (key cylinder switch) terminal 5
through grounds M57, M61 and M79.
When a signal, or combination of signals is received by BCM, ground is supplied
through BCM terminal 63
to door mirror LH and RH terminal 13
to front room/map lamp assembly terminal 1
through front room/map lamp assembly terminal 2
to personal lamps terminal 1, and
through BCM terminal 49
to cargo lamp terminal 1.
With power and ground supplied, the lamps illuminate.
SWITCH OPERATION
When any door switch is ON (door is opened), ground is supplied
to front and rear step lamps LH and RH and foot lamp LH and RH terminal –
through BCM terminal 62.
And power is supplied
through BCM terminal 56
to front and rear step lamps LH and RH terminal +
to ignition keyhole illumination terminal +
to door mirror LH and RH terminal 12
to front room/map lamp assembly terminal 6
to vanity lamp LH and RH terminal 1
to personal lamp 2nd row and 3rd row terminal 3
to cargo lamp terminal 2, and
to foot lamp LH and RH terminal +.
When map lamp switch is ON, ground is supplied
to front room/map lamp assembly terminal 5
through grounds M57, M61 and M79.
When vanity lamp (LH and RH) is ON, ground is supplied
to vanity lamp (LH and RH) terminal 2
through grounds M57, M61 and M79.
When cargo lamp is ON, ground is supplied through cargo lamp case ground.
ROOM LAMP TIMER OPERATION
When lamp switch is in DOOR position and all conditions below are met, BCM performs timer control (maxi-
mum 30 seconds) for interior room lamp and map lamp ON/OFF.
Power is supplied

Page 2544 of 3383

INFINITI QX56 2006 Factory Service Manual INTERIOR ROOM LAMPLT-137
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through 10A fuse [No. 19, located in the fuse block (J/B)]
to key switch and key lock solenoid terminal 3.
Key is

INTERIOR ROOM LAMPLT-137
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through 10A fuse [No. 19, located in the fuse block (J/B)]
to key switch and key lock solenoid terminal 3.
Key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM terminal 37.
Serial data is supplied
to BCM terminal 22
through main power window and door lock/unlock switch terminal 14.
At the time that front door LH is opened, BCM detects that front door LH is unlocked. It determines that interior
room lamp and map lamp timer operation conditions are met, and turns the interior room lamps ON for 30 sec-
onds.
Key is in ignition key cylinder (key switch ON), power is supplied
through key switch and key lock solenoid terminal 4
to BCM terminal 37.
When key is removed from key switch and key lock solenoid (key switch OFF), power supply to BCM terminal
37 is terminated. BCM detects that key has been removed, determines that interior room lamp and map lamp
timer conditions are met, and turns the interior room lamps ON for 30 seconds.
When front door LH opens → closes, and the key is not inserted in the key switch and key lock solenoid (key
switch OFF), BCM terminal 47 changes between 0V (door open) → 12V (door closed). The BCM determines
that conditions for interior room lamp operation are met and turns the interior room lamp ON for 30 seconds.
Timer control is canceled under the following conditions.
Front door LH is locked [when locked by keyfob, main power window and door lock/unlock switch, or front
door lock assembly LH (key cylinder switch)]
Front door LH is opened (front door switch LH turns ON)
Ignition switch ON.
INTERIOR LAMP BATTERY SAVER CONTROL
If interior lamp is left “ON”, it will not be turned off even when door is closed.
BCM turns off interior lamp automatically to save battery 30 minutes after ignition switch is turned off.
BCM controls interior lamps listed below:
Va n i t y l a m p
Room/map lamp
Cargo lamp
Personal lamp
St ep la m ps
Puddle lamps
Foot lamps
Ignition keyhole illumination
After lamps turn OFF by the battery saver system, the lamps illuminate again when
signal received from keyfob, or main power window and door lock/unlock switch or front door lock assem-
bly LH (key cylinder switch) is locked or unlocked
door is opened or closed
key is removed from ignition key cylinder (key switch OFF) or inserted in ignition key cylinder (key switch
ON).
Interior lamp battery saver control period can be changed by the function setting of CONSULT-II.

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