INFINITI QX56 2011 Factory Service Manual

PG-162
< BASIC INSPECTION >
FUSE INSPECTION
FUSE INSPECTION
How To CheckINFOID:0000000006275774
 If fuse is blown, be sure to eliminate cause of malfunction beforeinstalling new fuse.
 Use fuse of specified rating. Never use fuse of more than specified
rating.
 Do not partially install fuse; always insert it into fuse holder prop- erly.
 Remove fuse for “ELECTRICAL PARTS (BAT)” if vehicle is not used for a long period of time.
CEL083
Revision: 2010 May2011 QX56

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FUSIBLE LINK INSPECTIONPG-163
< BASIC INSPECTION >
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FUSIBLE LINK INSPECTION
How To CheckINFOID:0000000006275775
A melted fusible link can be detected either by visual ins
pection or by feeling with finger tip. If its condition is
questionable, use circuit tester or test lamp.
CAUTION:
 If fusible link should melt, it is possible that critical circuit (pow er supply or large current carrying
circuit) is shorted. In such a case, careful ly check and eliminate cause of malfunction.
 Never wrap outside of fusi ble link with vinyl tape. Important: N ever let fusible link touch any other
wiring harness, vinyl or rubber parts.
1. Fusible link
JSMIA0237ZZ
Revision: 2010 May2011 QX56

PG-164
< REMOVAL AND INSTALLATION >
BATTERY
REMOVAL AND INSTALLATION
BATTERY
Exploded ViewINFOID:0000000006275779
Removal and InstallationINFOID:0000000006275780
REMOVAL
1. Remove cover of battery positive terminal.
2. Loosen battery terminal nuts, and disconnect both battery cables from battery terminals.
CAUTION:
When disconnecting, disconnect the battery cable from the negative terminal first.
3. Remove battery fix frame mounting nuts and battery fix frame.
4. Remove battery.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
When connecting, connect the battery cable to the positive terminal first.
Reset electronic systems as necessary. Refer to GI-65, "
ADDITIONAL SERVICE WHEN REMOVING BAT-
TERY NEGATIVE TERMINAL : Required Procedure After Battery Disconnection".
1 : Battery fix frame
Refer to GI-4, "
Components" for symbols in the figure.
JSMIA0238GB
Revision: 2010 May2011 QX56

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BATTERY TERMINAL WITH FUSIBLE LINKPG-165
< REMOVAL AND INSTALLATION >
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BATTERY TERMINAL WI
TH FUSIBLE LINK
Exploded ViewINFOID:0000000006275781
Removal and InstallationINFOID:0000000006275782
REMOVAL
1. Disconnect the battery cabl e from the negative terminal.
2. Remove cover of battery positive terminal.
3. Remove harness mounting nut and battery te rminal with fusible link mounting nut.
4. Disconnect harness connector and remove battery terminal with fusible link.
INSTALLATION
Install in the reverse order of removal.
1 : Battery terminal with fusible link
2 : Harness connector
Refer to GI-4, "
Components" for symbols in the figure.
JSMIA0239GB
Revision: 2010 May2011 QX56

PG-166
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
BatteryINFOID:0000000006275783
Ty p e11 5 D 3 1 R
20 hour rate capacity [V – Ah] 12 – 82
Cold cranking current (For reference value) [A] 782
Revision: 2010 May2011 QX56

PWC-1
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
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CONTENTS
POWER WINDOW CONTROL SYSTEM
PRECAUTION ................ ...............................4
PRECAUTIONS .............................................. .....4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
4
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect .....................................
4
SYSTEM DESCRIPTION ..............................6
COMPONENT PARTS ................................... .....6
Component Parts Location ................................ ......6
Component Description .............................................7
SYSTEM ..............................................................8
System Diagram ................................................. ......8
System Description ...................................................8
Fail-safe ..................................................................10
DIAGNOSIS SYSTEM (BCM) ............................11
COMMON ITEM ..................................................... ....11
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) .....................................................
11
RETAIND PWR ...................................................... ....12
RETAIND PWR : CONSULT-III Function (BCM -
RETAINED PWR) ...................................................
12
ECU DIAGNOSIS INFORMATION ..............13
BCM (BODY CONTROL MODULE) ............... ....13
List of ECU Reference ........................................ ....13
POWER WINDOW MAIN SWITCH ....................14
Reference Value ................................................. ....14
Fail-safe ..................................................................15
FRONT POWER WINDOW SWITCH (PAS-
SENGER SIDE) ..................................................
16
Reference Value ................................................. ....16
Fail-safe ..................................................................17
REAR POWER WINDOW SWITCH LH ............18
Reference Value .................................................. ....18
Fail-safe ...................................................................19
REAR POWER WINDOW SWITCH RH ............20
Reference Value ......................................................20
Fail-safe ...................................................................21
WIRING DIAGRAM ......................................22
POWER WINDOW SYSTEM .............................22
Wiring Diagram .................................................... ....22
BASIC INSPECTION ...................................30
DIAGNOSIS AND REPAIR WORKFLOW ........30
Work Flow ............................................................ ....30
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL ...................
31
Description ...............................................................31
Work Procedure .......................................................31
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT ................................................
32
Description ...............................................................32
Work Procedure .......................................................32
SYSTEM INITIALIZATION ................................33
Description ........................................................... ....33
Work Procedure .......................................................33
CHECK ANTI-PINCH FUNCTION .....................34
Description ...............................................................34
Work Procedure .......................................................34
DTC/CIRCUIT DIAGNOSIS .........................35
POWER SUPPLY AND GROUND CIRCUIT ....35
POWER WINDOW MAIN SWITCH ........................ ....35
POWER WINDOW MAIN SWITCH : Diagnosis
Procedure ................................................................
35
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PWC-2
FRONT POWER WINDOW SWITCH (PASSEN-
GER SIDE) ................................................................
36
FRONT POWER WINDOW SWITCH (PASSEN-
GER SIDE) : Diagnosis Procedure .........................
36
REAR POWER WINDOW SWITCH ....................... ...37
REAR POWER WINDOW SWITCH : Diagnosis
Procedure ...............................................................
37
POWER WINDOW MOTOR ...............................39
DRIVER SIDE ......................................................... ...39
DRIVER SIDE : Component Function Check .........39
DRIVER SIDE : Diagnosis Procedure ....................39
PASSENGER SIDE ................................................ ...39
PASSENGER SIDE : Component Function Check
...
40
PASSENGER SIDE : Diagnosis Procedure ........ ...40
REAR LH ................................................................ ...40
REAR LH : Component Function Check ................41
REAR LH : Diagnosis Procedure ............................41
REAR RH ............................................................... ...41
REAR RH : Component Function Check ................41
REAR RH : Diagnosis Procedure ...........................42
ENCODER .........................................................43
DRIVER SIDE ......................................................... ...43
DRIVER SIDE : Component Function Check .........43
DRIVER SIDE : Diagnosis Procedure ....................43
PASSENGER SIDE ................................................ ...45
PASSENGER SIDE : Component Function Check
...
45
PASSENGER SIDE : Diagnosis Procedure ........ ...45
REAR LH ................................................................ ...47
REAR LH : Component Function Check ................47
REAR LH : Diagnosis Procedure ............................47
REAR RH ............................................................... ...49
REAR RH : Component Function Check ................49
REAR RH : Diagnosis Procedure ...........................50
DOOR KEY CYLINDER SWITCH ......................53
Component Function Check ................................ ...53
Diagnosis Procedure ..............................................53
Component Inspection ............................................54
POWER WINDOW SERIAL LINK .....................55
POWER WINDOW MAIN SWITCH ........................ ...55
POWER WINDOW MAIN SWITCH : Component
Function Check .......................................................
55
POWER WINDOW MAIN SWITCH : Diagnosis
Procedure ...............................................................
55
FRONT POWER WINDOW SWITCH (PASSEN-
GER SIDE) ............................................................. ...
56
FRONT POWER WINDOW SWITCH (PASSEN-
GER SIDE) : Component Function Check ..............
56
FRONT POWER WINDOW SWITCH (PASSEN-
GER SIDE) : Diagnosis Procedure .........................
56
REAR POWER WINDOW SWITCH LH .................. ...57
REAR POWER WINDOW SWITCH LH : Compo-
nent Function Check ...............................................
58
REAR POWER WINDOW SWITCH LH : Diagno-
sis Procedure ..........................................................
58
REAR POWER WINDOW SWITCH RH ................. ...59
REAR POWER WINDOW SWITCH RH : Compo-
nent Function Check ...............................................
59
REAR POWER WINDOW SWITCH RH : Diagno-
sis Procedure ..........................................................
59
SYMPTOM DIAGNOSIS ............................61
POWER WINDOWS DO NOT OPERATE
WITH POWER WINDOW MAIN SWITCH ...... ...
61
Diagnosis Procedure ............................................ ...61
DRIVER SIDE POWER WINDOW ALONE
DOES NOT OPERATE ......................................
62
Diagnosis Procedure ............................................ ...62
FRONT PASSENGER SIDE POWER WIN-
DOW DOES NOT OPERATE ............................
63
WHEN POWER WINDOW MAIN SWITCH IS OP-
ERATED ................................................................. ...
63
WHEN POWER WINDOW MAIN SWITCH IS OP-
ERATED : Diagnosis Procedure .............................
63
WHEN FRONT POWER WINDOW SWITCH (PAS-
SENGER SIDE) IS OPERATED ............................. ...
63
WHEN FRONT POWER WINDOW SWITCH
(PASSENGER SIDE) IS OPERATED : Diagnosis
Procedure ...............................................................
63
WHEN BOTH POWER WINDOW MAIN SWITCH
AND FRONT POWER WINDOW SWITCH ARE
OPERATED ............................................................ ...
63
WHEN BOTH POWER WINDOW MAIN SWITCH
AND FRONT POWER WINDOW SWITCH ARE
OPERATED : Diagnosis Procedure ........................
63
REAR LH SIDE POWER WINDOW ALONE
DOES NOT OPERATE ......................................
64
WHEN POWER WINDOW MAIN SWITCH IS OP-
ERATED ................................................................. ...
64
WHEN POWER WINDOW MAIN SWITCH IS OP-
ERATED : Diagnosis Procedure .............................
64
WHEN REAR POWER WINDOW SWITCH LH IS
OPERATED ............................................................ ...
64
WHEN REAR POWER WINDOW SWITCH LH IS
OPERATED : Diagnosis Procedure ........................
64
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PWC-3
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WHEN BOTH POWER WINDOW MAIN SWITCH
AND REAR POWER WINDOW SWITCH LH ARE
OPERATED ...........................................................
....
64
WHEN BOTH POWER WINDOW MAIN SWITCH
AND REAR POWER WINDOW SWITCH LH ARE
OPERATED : Diagnosis Procedure ........................
64
REAR RH SIDE POWER WINDOW ALONE
DOES NOT OPERATE .......................................
65
WHEN POWER WINDOW MAIN SWITCH IS OP-
ERATED ................................................................ ....
65
WHEN POWER WINDOW MAIN SWITCH IS OP-
ERATED : Diagnosis Procedure .............................
65
WHEN REAR POWER WINDOW SWITCH RH IS
OPERATED ........................................................... ....
65
WHEN REAR POWER WINDOW SWITCH RH IS
OPERATED : Diagnosis Procedure ........................
65
WHEN BOTH POWER WINDOW MAIN SWITCH
AND REAR POWER WINDOW SWITCH RH ARE
OPERATED ........................................................... ....
65
WHEN BOTH POWER WINDOW MAIN SWITCH
AND REAR POWER WINDOW SWITCH RH ARE
OPERATED : Diagnosis Procedure ........................
65
AUTO OPERATION DOES NOT OPERATE
BUT MANUAL OPERATE NORMALLY ............
66
DRIVER SIDE ........................................................ ....66
DRIVER SIDE : Diagnosis Procedure .....................66
PASSENGER SIDE ...................................................66
PASSENGER SIDE : Diagnosis Procedure ........ ....66
REAR LH ............................................................... ....66
REAR LH : Diagnosis Procedure ............................66
REAR RH ............................................................... ....67
REAR RH : Diagnosis Procedure ............................67
ANTI-PINCH FUNCTION DOES NOT OPER-
ATE ....................................................................
68
Diagnosis Procedure ........................................... ....68
POWER WINDOW RETAINED POWER
FUNCTION DOES NOT OPERATE NORMAL-
LY ......................................................................
69
Diagnosis Procedure ...............................................69
DOOR KEY CYLINDER SWITCH DOES NOT
OPERATE POWER WINDOWS ........................
70
Diagnosis Procedure ...............................................70
KEYLESS POWER WINDOW DOWN DOES
NOT OPERATE .................................................
71
Diagnosis Procedure ...............................................71
POWER WINDOW LOCK SWITCH DOES
NOT FUNCTION ................................................
72
Diagnosis Procedure ...............................................72
POWER WINDOW SWITCH DOES NOT IL-
LUMINATE ........................................................
73
DRIVER SIDE ......................................................... ....73
DRIVER SIDE : Diagnosis Procedure .....................73
PASSENGER SIDE ....................................................73
PASSENGER SIDE : Diagnosis Procedure ........ ....73
REAR LH ................................................................ ....73
REAR LH : Diagnosis Procedure .............................73
REAR RH ............................................................... ....73
REAR RH : Diagnosis Procedure ............................73
REMOVAL AND INSTALLATION ...............74
POWER WINDOW MAIN SWITCH ...................74
Removal and Installation ..................................... ....74
Revision: 2010 May2011 QX56

PWC-4
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006237825
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.
Precaution Necessary for Steering W heel Rotation after Battery Disconnect
INFOID:0000000006217263
NOTE:
 Before removing and installing any control units, first tu rn the push-button ignition switch to the LOCK posi-
tion, then disconnect bot h battery cables.
 After finishing work, confirm that all control unit connectors are connected properly, then re-connect both
battery cables.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If a DTC is detected, perform trouble diagnos is according to self-diagnosis results.
For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the bat tery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the push-button ignition switch to ACC position. (At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock wi ll remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.
Revision: 2010 May2011 QX56

PRECAUTIONSPWC-5
< PRECAUTION >
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5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button ignition switch is turned to LOCK position.)
6. Perform self-diagnosis check of a ll control units using CONSULT-III.
Revision: 2010 May2011 QX56