INFINITI QX56 2011 Factory Service Manual

BLOWER UNITVTL-15
< REMOVAL AND INSTALLATION >
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Removal and InstallationINFOID:0000000006276306
REMOVAL
1. Remove A/C unit assembly. Refer to HA-42, "HEATER & COOLING UNIT ASSEMBLY : Removal and
Installation".
2. Remove mounting bolts, and then disconnect heater & cooling unit assembly and blower unit assembly.
INSTALLATION
Install in the reverse order of removal.
1. Shutter box case RH 2. Shutter box upper case 3. Packing
4. Bellmouth ring 5. Blower unit bracket 6. Intake upper case
7. Intake lower case 8. Blower motor assembly 9. Packing
10. Shutter box case LH 11. Intake door motor 12. Intake door
13. In-cabin microfilter 14. Filter cover
JMIIA0642ZZ
Revision: 2010 May2011 QX56

VTL-16
< REMOVAL AND INSTALLATION >
BLOWER MOTOR
BLOWER MOTOR
FRONT A/C UNIT
FRONT A/C UNIT : Exploded ViewINFOID:0000000006276307
Refer to VTL-14, "Exploded View".
FRONT A/C UNIT : Removal and InstallationINFOID:0000000006276308
REMOVAL
1. Remove instrument lower cover. Refer to IP-14, "Removal and Installation".
2. Disconnect blower motor connector.
3. Remove fixing screws, and then remove blower motor.
INSTALLATION
Install in the reverse order of removal.
REAR A/C UNIT ASSEMBLY
REAR A/C UNIT ASSEMBLY : Exploded ViewINFOID:0000000006276309
Refer to HA-46, "Exploded View"
REAR A/C UNIT ASSEMBLY : Removal and InstallationINFOID:0000000006276310
REMOVAL
1. Removal rear A/C unit assembly. Refer to HA-47, "REAR A/C UNIT ASSEMBLY : Removal and Installa-
tion".
2. Disconnect blower motor connector.
3. Remove fixing screws, and then remove blower motor.
Revision: 2010 May2011 QX56

IN-CABIN MICROFILTERVTL-17
< REMOVAL AND INSTALLATION >
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IN-CABIN MICROFILTER
Exploded ViewINFOID:0000000006276313
Refer to VTL-14, "Exploded View".
Removal and InstallationINFOID:0000000006276314
REMOVAL
1. Remove glove box assembly. Refer to IP-14, "Removal and Installation".
2. Remove filter cover, and then remove air conditioner filter.
CAUTION:
If the filter is deformed/damaged when removing , replace it with a new one. Deformed/damaged filter
may deteriorate the dust collecting performance.
INSTALLATION
Note the following item, and install in the reverse order of removal.
CAUTION:
When installing, handle the filter with ext reme care to avoid deforming/damaging.
ReplacementINFOID:0000000006276315
Replace in-cabin microfilter.
Refer to MA-6, "
Schedule 1" and MA-8, "Schedule 2".
Affix a caution label inside the glove box when replacing filter.
Revision: 2010 May2011 QX56

VTL-18
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
In-cabin microfilterINFOID:0000000006276316
Replacement intervalMA-6, "Schedule 1" and MA-8, "Schedule 2"
Revision: 2010 May2011 QX56

WCS
WCS-1
DRIVER INFORMATION & MULTIMEDIA
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SECTION WCS
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CONTENTS
WARNING CHIME 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
Combination Meter ....................................................5
SYSTEM ..............................................................6
WARNING CHIME SYSTEM .......................................6
WARNING CHIME SYSTEM : System Diagram . ......6
WARNING CHIME SYSTEM : System Description
......
6
WARNING CHIME SYSTEM : Fail-Safe ...................7
LIGHT REMINDER WARNING CHIME ................. ......8
LIGHT REMINDER WARNING CHIME : System
Diagram .....................................................................
8
LIGHT REMINDER WARNING CHIME : System
Description ................................................................
8
FRONT FOG LIGHT REMINDER WARNING
CHIME .................................................................... ......
9
FRONT FOG LIGHT REMINDER WARNING
CHIME : System Diagram .......................................
10
FRONT FOG LIGHT REMINDER WARNING
CHIME : System Description ...................................
10
SEAT BELT WARNING CHIME ............................ ....10
SEAT BELT WARNING CHIME : System Diagram
....
11
SEAT BELT WARNING CHIME : System Descrip-
tion ...................................................................... ....
11
PARKING BRAKE RELEASE WARNING CHIME ....12
PARKING BRAKE RELEASE WARNING CHIME
: System Diagram ................................................ ....
12
PARKING BRAKE RELEASE WARNING CHIME
: System Description ................................................
12
DIAGNOSIS SYSTEM (COMBINATION
METER) .............................................................
14
CONSULT-III Function ............................................14
DIAGNOSIS SYSTEM (BCM) ...........................19
COMMON ITEM ..................................................... ....19
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) .....................................................
19
BUZZER ................................................................. ....20
BUZZER : CONSULT-III Function (BCM - BUZZ-
ER) ..........................................................................
20
ECU DIAGNOSIS INFORMATION ..............22
COMBINATION METER ...................................22
Reference Value .................................................. ....22
Fail-Safe ..................................................................29
DTC Index ...............................................................30
BCM (BODY CONTROL MODULE) .................31
List of ECU Reference .............................................31
WIRING DIAGRAM ......................................32
WARNING CHIME SYSTEM .............................32
Wiring Diagram .................................................... ....32
BASIC INSPECTION ...................................37
DIAGNOSIS AND REPAIR WORKFLOW ........37
Work Flow ............................................................ ....37
DTC/CIRCUIT DIAGNOSIS .........................39
POWER SUPPLY AND GROUND CIRCUIT ....39
COMBINATION METER ........................................ ....39
Revision: 2010 May2011 QX56

WCS-2
COMBINATION METER : Diagnosis Procedure ....39
METER BUZZER CIRCUIT ................................40
Component Function Check ................................ ...40
Diagnosis Procedure .............................................40
SEAT BELT BUCKLE SWITCH SIGNAL CIR-
CUIT ...................................................................
41
Component Function Check .............................. ...41
Diagnosis Procedure .............................................41
Component Inspection ............................................42
PARKING BRAKE SWITCH SIGNAL CIR-
CUIT ...................................................................
43
Diagnosis Procedure ........................................... ...43
Component Inspection ............................................43
SYMPTOM DIAGNOSIS ............................44
THE LIGHT REMINDER WARNING DOES
NOT SOUND ................................................... ...
44
Description ........................................................... ...44
Diagnosis Procedure ...............................................44
THE SEAT BELT WARNING CONTINUES
SOUNDING, OR DOES NOT SOUND ...............
45
Description ........................................................... ...45
Diagnosis Procedure ...............................................45
THE PARKING BRAKE RELEASE WARNING
CONTINUES SOUNDING, OR DOES NOT
SOUND ..............................................................
46
Description ........................................................... ...46
Diagnosis Procedure ...............................................46
Revision: 2010 May2011 QX56

WCS
PRECAUTIONSWCS-3
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006369725
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

WCS-4
< SYSTEM DESCRIPTION >
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000006222537
Component DescriptionINFOID:0000000006222682
1. Parking brake switch 2. ABS actuator and electric unit (con-
trol unit)
Refer to BRC-10, "
Component Parts
Location". 3. BCM
Refer to BCS-4, "
BODY CONTROL
SYSTEM : Component Parts Loca-
tion".
4. Combination meter 5. Seat belt buckle switch (driver side)
JSNIA3313ZZ
Unit Description
Combination meter  Receives a buzzer output signal from the BCM with CAN communication line and sounds the
buzzer.
 Judges whether the parking brake is released from the vehicle speed signal received from the ABS actuator and electric unit (control unit) with CAN commun ication line and the parking
brake switch signal from the parking brake switch, and sounds the buzzer if necessary.
BCM Based on the signals received from various units and switches, transmits the buzzer output sig-
nal to the combination meter via CAN communication.
ABS actuator and electric unit
(control unit) Transmits the vehicle speed signal to the combination meter via CAN communication.
Parking brake switch Transmits the parking brake switch signal to the combination meter.
Seat belt buckle switch (driver
side) Transmits the seat belt buckle switch signal (driver side) to the combination meter.
Revision: 2010 May2011 QX56

WCS
COMPONENT PARTSWCS-5
< SYSTEM DESCRIPTION >
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Combination MeterINFOID:0000000006222539
The buzzer (1) for the warning chime system is integrated in the
combination meter.
JSNIA3016ZZ
Revision: 2010 May2011 QX56

WCS-6
< SYSTEM DESCRIPTION >
SYSTEM
SYSTEM
WARNING CHIME SYSTEM
WARNING CHIME SYSTEM : System DiagramINFOID:0000000006222683
WARNING CHIME SYSTEM : System DescriptionINFOID:0000000006222684
COMBINATION METER
The combination meter sounds the alarm buzzer install ed in the combination meter when receiving the buzzer
output signal transmitted from each unit.
BCM
BCM receives signals from various units and transmits a buzzer output signal to the combination meter via
CAN communication if it judges that the warning buzzer should be activated.
WARNING CHIME FUNCTION LIST
JSNIA3116GB
Warning functions Out line Warning judgment unit Refer to
Light reminder warning chime The warning chime sounds when the ignition
s w i t c h i s i n O F F o r A C C p o s i t i o n w i t h t h e c o m -
bination switch (lighting switch) in the 1st or
2nd position and the driver side door open. BCMWCS-8,
"LIGHT RE-
MINDER
WARNING
CHIME : Sys-
tem Descrip-
tion"
Front fog light reminder warning chime
The warning chime sounds when the ignition
switch is turned to LOCK, OFF or ACC posi-
tion from ON position, with combination switch
(lighting switch) is in AUTO position and the
front fog lamp switch in ON position. BCMWCS-10,
"FRONT FOG
LIGHT RE-
MINDER
WARNING
CHIME : Sys-
tem Descrip-
tion"
Revision: 2010 May2011 QX56