diagram INFINITI QX56 2011 Factory Service Manual

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HORN
JCLWM5508GB
Revision: 2010 May2011 QX56

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JCLWM5509GB
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INL-1
DRIVER CONTROLS
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SECTION INL
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CONTENTS
INTERIOR LIGHTING SYSTEM
PRECAUTION ................ ...............................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
SYSTEM DESCRIPTION ..............................4
COMPONENT PARTS ................................... .....4
Component Parts Location .................................. ......4
Component Description ............................................4
SYSTEM ..............................................................6
INTERIOR ROOM LAMP CONTROL SYSTEM .... ......6
INTERIOR ROOM LAMP CONTROL SYSTEM :
System Diagram ........................................................
6
INTERIOR ROOM LAMP CONTROL SYSTEM :
System Description ...................................................
6
INTERIOR ROOM LAMP BATTERY SAVER SYS-
TEM ........................................................................ ......
8
INTERIOR ROOM LAMP BATTERY SAVER
SYSTEM : System Diagram ......................................
9
INTERIOR ROOM LAMP BATTERY SAVER
SYSTEM : System Description .................................
9
ILLUMINATION CONTROL SYSTEM ................... ....10
ILLUMINATION CONTROL SYSTEM : System
Diagram ...................................................................
10
ILLUMINATION CONTROL SYSTEM : System
Description ..............................................................
10
AUTO LIGHT ADJUSTMENT SYSTEM ................ ....10
AUTO LIGHT ADJUSTMENT SYSTEM : System
Diagram ...................................................................
11
AUTO LIGHT ADJUSTMENT SYSTEM : System
Description ..............................................................
11
DIAGNOSIS SYSTEM (BCM) ............................12
COMMON ITEM ..................................................... ....12
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) .....................................................
12
INT LAMP ............................................................... ....13
INT LAMP : CONSULT-III Function (BCM - INT
LAMP) ......................................................................
14
BATTERY SAVER ................................................. ....15
BATTERY SAVER : CONSULT-III Function (BCM
- BATTERY SAVER) ...............................................
15
ECU DIAGNOSIS INFO RMATION ..............17
BCM ...................................................................17
List of ECU Reference ......................................... ....17
WIRING DIAGRAM ......................................18
INTERIOR ROOM LAMP CONTROL SYSTEM
...
18
Wiring Diagram .................................................... ....18
ILLUMINATION .................................................34
Wiring Diagram ........................................................34
BASIC INSPECTION ...................................54
DIAGNOSIS AND REPAIR WORKFLOW ........54
Work Flow ............................................................ ....54
DTC/CIRCUIT DIAGNOSIS .........................56
INTERIOR ROOM LAMP POWER SUPPLY
CIRCUIT ...................... ......................................
56
Description ........................................................... ....56
Component Function Check ....................................56
Diagnosis Procedure ...............................................56
INTERIOR ROOM LAMP CONTROL CIRCUIT
...
58
Description ........................................................... ....58
Component Function Check ....................................58
Diagnosis Procedure ...............................................58
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INL-6
< SYSTEM DESCRIPTION >
SYSTEM
SYSTEM
INTERIOR ROOM LAMP CONTROL SYSTEM
INTERIOR ROOM LAMP CONTROL SYSTEM : System DiagramINFOID:0000000006216050
INTERIOR ROOM LAMP CONTROL SYSTEM : System DescriptionINFOID:0000000006216051
OUTLINE
 Interior room lamps* are controlled by interi or room lamp timer control function of BCM.
*: Map lamp, foot lamp and personal lamp (when map lamp switch and personal lamp switch are in DOOR
position).
 Step lamp is controlled by step lamp control function of BCM.
 Luggage room lamp and automatic back door close switch illumination are controlled by luggage room lamp
control function of BCM.
 Puddle lamp is controlled by puddle lamp timer control function of BCM.
 Push-button ignition switch illumination is controlled by the push-button ignition switch illumination control
function of BCM and combination meter.
 Interior room lamps and puddle lamp are illuminated by welcome light function of Intelligent Key system.
Refer to DLK-26, "
WELCOME LIGHT FUNCTION : System Description".
INTERIOR ROOM LAMP TIMER CONTROL
JMLIA1188GB
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INTERIOR ROOM LAMP BATTERY SAVER SYSTEM : System DiagramINFOID:0000000006216052
INTERIOR ROOM LAMP BATTERY SA VER SYSTEM : System Description
INFOID:0000000006216053
OUTLINE
 Interior room lamp battery saver is controlled by BCM.
 BCM turns applicable lamps OFF depending on the vehicle condition. This function prevents the battery
from over-discharging if the driver neglects turning OFF the any lamps.
Applicable lamps
 Map lamp
 Personal lamp
 Foot lamp
 Luggage room lamp
 Automatic back door close switch illumination
 Step lamp
 Puddle lamp
 Vanity mirror lamp
INTERIOR ROOM LAMP BATTERY SAVER FUNCTION
 When the ignition switch is turned to a position other than ON, BCM operates the timer for a period of time to
cut the interior room lamp power supply.
 BCM restart the timer when any of the following signals changes while operating the timer.
- Push-button ignition switch status
- Door switch signal (ALL)
- Door lock/unlock signal (remote keyless entry re ceiver, each door request switch, door lock and unlock
switch, door key cylinder switch)
 BCM provides the interior room lamp power supply continuously when the ignition switch position is ON.
 When welcome light function operates.
NOTE:
JMLIA1189GB
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INL-10
< SYSTEM DESCRIPTION >
SYSTEM
Each function of interior room lamp battery saver can be set by CONSULT-III. Refer to INL-15, "BATTERY
SAVER : CONSULT-III Function (BCM - BATTERY SAVER)".
ILLUMINATION CONTROL SYSTEM
ILLUMINATION CONTROL SYSTEM : System DiagramINFOID:0000000006216054
ILLUMINATION CONTROL SYS TEM : System DescriptionINFOID:0000000006216055
OUTLINE
Each illumination lamp is controlled by each function of BCM, IPDM E/R and combination meter.
Control by BCM Combination switch reading function
 Headlamp control function
Control by IPDM E/R Relay control function
Control by combination meter Meter illumination control function (Refer to MWI-16, "METER ILLUMINATION CONTROL : System Descrip-
tion".)
ILLUMINATION CONTROL
 BCM detects the combination switch conditi on by the combination switch reading function.
 BCM transmits position light request signal to IPDM E/R and combination meter according to tail lamp ON
condition.
Tail lamp ON condition- Lighting switch 1ST
- Lighting switch 2ND
- Lighting switch AUTO, and the auto light function ON judgment
- Lighting switch AUTO, with the front fog lamp switch ON and the ignition switch ON
 IPDM E/R turns the integrated tail lamp relay ON acco rding to position light request signal. It provides the
power supply to each illumination lamp.
 Combination meter enters in the nighttime mode accord ing to position light request signal. Under the night-
time mode the combination meter controls the illu minance by controlling each illumination lamp (ground
side).
AUTO LIGHT ADJUSTMENT SYSTEM
JPLIA0855GB
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AUTO LIGHT ADJUSTMENT SYSTEM : System DiagramINFOID:0000000006216056
AUTO LIGHT ADJUSTMENT SYSTEM : System DescriptionINFOID:0000000006216057
OUTLINE
Auto light adjustment system is controlled by each f unction of BCM, combination meter and AV control unit
Control by BCM Auto light system
 Auto light adjustment system
AUTO LIGHT ADJUSTMENT SYSTEM
Description
 BCM supplies voltage to the optical sensor when the ignition switch is turned ON or ACC.
 Optical sensor converts outside brightness (lux) to voltage and transmits the optical sensor signal to BCM.
 BCM judges dimming/brightening of combination meter and display according to brightness outside the vehi- cle, when ignition switch is ON.
 BCM transmits dimmer signal to combination meter via CAN communication, according to auto light adjust- ment conditions. Dimmer signal is also transmitted to AV control unit.
NOTE:
As to dimming/brightening timing, the sensitivity depends on settings. The settings can be changed with CON-
SULT-III. Refer to EXL-23, "
HEADLAMP : CONSULT-III F unction (BCM - HEAD LAMP)".
Auto Light Adjustment Timing Table
When the ignition switch is ON, the illumination of co mbination meter and display switches dimming/brighten-
ing in the following condition.
BCM switches the illumination of combination me ter and display to dimming when outside brightening
obtained from the optical sensor signal is 1250 lx or le ss for 3 seconds or more. And BCM switches the illumi-
nation of combination meter and display to brightening when outside brightening from the optical sensor signal
is 2500 lx or more for 5 seconds or more.
JMLIA0967GB
Combination meter and display Dimming/brightening timing
Dimming Outside brightness is 1250 lx or less for 3 seconds or more.
Brightening Outside brightness is 2500 lx or more for 5 seconds or more.
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INL-18
< WIRING DIAGRAM >
INTERIOR ROOM LAMP CONTROL SYSTEM
WIRING DIAGRAM
INTERIOR ROOM LAMP CONTROL SYSTEM
Wiring DiagramINFOID:0000000006216062
JCLWM5455GB
Revision: 2010 May2011 QX56

INTERIOR ROOM LAMP CONTROL SYSTEMINL-19
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JCLWM5456GB
Revision: 2010 May2011 QX56

INL-20
< WIRING DIAGRAM >
INTERIOR ROOM LAMP CONTROL SYSTEM
JCLWM5457GB
Revision: 2010 May2011 QX56