Wiring INFINITI QX56 2011 Factory Service Manual

HAC-58
< WIRING DIAGRAM >[AUTOMATIC AIR CONDITIONING]
AUTOMATIC AIR CONDITIONING SYSTEM
JCIWM0805GB
Revision: 2010 May2011 QX56

AUTOMATIC AIR CONDITIONING SYSTEMHAC-59
< WIRING DIAGRAM > [AUTOMATIC AIR CONDITIONING]
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HAC
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JCIWM0806GB
Revision: 2010 May2011 QX56

HAC-72
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
U1000 CAN COMM CIRCUIT
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000006275903
CAN (Controller Area Network) is a serial communication
system for real time application. It is an on-vehicle
multiplex communication system with high data comm unication speed and excellent error detection ability.
Many electronic control units are equipped onto vehicl es, and each control unit shares information and links
with other control units during operation (not independent ). In CAN communication, control units are con-
nected with two communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission
with less wiring. Each control unit transmits/recei ves data but selectively reads required data only.
CAN Communication Signal Chart. Refer to LAN-28, "
CAN COMMUNICATION SYSTEM : CAN Communica-
tion Signal Chart".
DTC LogicINFOID:0000000006275904
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM SELF-DIAGNOSIS
With CONSULT-III
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Select “Self Diagnostic Result” m ode of “HVAC” using CONSULT-.III
3. Check DTC.
Is DTC detected?
YES >> Refer to HAC-72, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006275905
1.CHECK CAN COMMUNICATION SYSTEM
Check CAN communication system. Refer to LAN-18, "
Trouble Diagnosis Flow Chart".
>> INSPECTION END
DTC Items
(CONSULT-III screen terms) DTC detection condition Possible cause
U1000 CAN COMM CIRCUIT When A/C auto amp. is not transmitting
or receiving CAN communication signal
for 2 or more seconds.
CAN communication system
Revision: 2010 May2011 QX56

HRN-1
DRIVER CONTROLS
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SECTION HRN
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CONTENTS
HORN
PRECAUTION ................ ...............................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
WIRING DIAGRAM .......................................3
HORN .................................................................3
Wiring Diagram .................................................... .....3
REMOVAL AND INSTALLATION ................6
HORN .................................................................6
Exploded View ..................................................... .....6
Removal and Installation ..........................................6
Revision: 2010 May2011 QX56

HRN-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006220273
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISS AN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
 When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
 When using air or electric power tools or hammers , always switch the ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Revision: 2010 May2011 QX56

HORN
HRN-3
< WIRING DIAGRAM >
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WIRING DIAGRAM
HORN
Wiring DiagramINFOID:0000000006220274
JCLWM5295GB
Revision: 2010 May2011 QX56

HRN-4
< WIRING DIAGRAM >
HORN
JCLWM5508GB
Revision: 2010 May2011 QX56

HORN
HRN-5
< WIRING DIAGRAM >
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HRN
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JCLWM5509GB
Revision: 2010 May2011 QX56

INL-1
DRIVER CONTROLS
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SECTION INL
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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
Revision: 2010 May2011 QX56

PRECAUTIONSINL-3
< PRECAUTION >
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INL
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006377028
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
 When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
 When using air or electric power tools or hammers , always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Revision: 2010 May2011 QX56