2007 INFINITI QX56 diagram

GI-18
< SERVICE INFORMATION >
HOW TO USE THIS MANUAL
• Letter designations next to test meter probe indicate harness (con-
nector) wire color.
• Connector numbers in a single circle M33 indicate harness con-
nectors.
Component Indication
Connector numbers in a double circle F211 indicate component connectors.
Switch Positions
Switches are shown in wiring diagrams as if the vehicle is in the “normal” condition.
A vehicle is in the “normal” condition when:
• ignition switch is “OFF”,
• doors, hood and trunk lid/back door are closed,
• pedals are not depressed, and
• parking brake is released.
Detectable Lines and Non-Detectable Lines
In some wiring diagrams, two kinds of lines, representing wires, with different weight are used.
AGI070
SGI860

HOW TO USE THIS MANUAL
GI-19
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• A line with regular weight (wider line) represents a “detectable line
for DTC (Diagnostic Trouble Code)”. A “detectable line for DTC” is
a circuit in which ECM can detect its malfunctions with the on
board diagnostic system.
• A line with less weight (thinner line) represents a “non-detectable
line for DTC”. A “non-detectable line for DTC” is a circuit in which
ECM cannot detect its malfunctions with the on board diagnostic
system.
Multiple Switch
The continuity of multiple switch is described in two ways as shown below.
• The switch chart is used in schematic diagrams.
• The switch diagram is used in wiring diagrams.
Reference Area
SGI862-B
SGI875

GI-20
< SERVICE INFORMATION >
HOW TO USE THIS MANUAL
The Reference Area of the wiring diagram contains references to additional electrical reference pages at the
end of the manual. If connector numbers and titles are shown in the Reference Area of the wiring diagram,
these connector symbols are not shown in the Connector Area.
AbbreviationsINFOID:0000000003531486
The following ABBREVIATIONS are used:
SGI092A
ABBREVIATION DESCRIPTION
A/C Air Conditioner
A/T Automatic Transaxle/Transmission
ATF Automatic Transmission Fluid
D
1Drive range 1st gear
D
2Drive range 2nd gear
D
3Drive range 3rd gear
D
4Drive range 4th gear
FR, RR Front, Rear

GI-26
< SERVICE INFORMATION >
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
• Cold or hot start up
Get a thorough description of the incident from the customer. It is important for simulating the conditions of the
problem.
Vehicle Vibration
The problem may occur or become worse while driving on a rough road or when engine is vibrating (idle with
A/C on). In such a case, you will want to check for a vibration related condition. Refer to the following illustra-
tion.
CONNECTORS & HARNESS
Determine which connectors and wiring harness would affect the electrical system you are inspecting. Gently
shake each connector and harness while monitoring the system for the incident you are trying to duplicate.
This test may indicate a loose or poor electrical connection.
HINT
Connectors can be exposed to moisture. It is possible to get a thin film of corrosion on the connector termi-
nals. A visual inspection may not reveal this without disconnecting the connector. If the problem occurs inter-
mittently, perhaps the problem is caused by corrosion. It is a good idea to disconnect, inspect and clean the
terminals on related connectors in the system.
SENSORS & RELAYS
Gently apply a slight vibration to sensors and relays in the system you are inspecting.
This test may indicate a loose or poorly mounted sensor or relay.
ENGINE COMPARTMENT
There are several reasons a vehicle or engine vibration could cause an electrical complaint. Some of the
things to check for are:
• Connectors not fully seated.
• Wiring harness not long enough and is being stressed due to engine vibrations or rocking.
• Wires laying across brackets or moving components.
• Loose, dirty or corroded ground wires.
• Wires routed too close to hot components.
To inspect components under the hood, start by verifying the integrity of ground connections. (Refer to Ground
Inspection described later.) First check that the system is properly grounded. Then check for loose connection
by gently shaking the wiring or components as previously explained. Using the wiring diagrams inspect the
wiring for continuity.
BEHIND THE INSTRUMENT PANEL
An improperly routed or improperly clamped harness can become pinched during accessory installation. Vehi-
cle vibration can aggravate a harness which is routed along a bracket or near a screw.
UNDER SEATING AREAS
An unclamped or loose harness can cause wiring to be pinched by seat components (such as slide guides)
during vehicle vibration. If the wiring runs under seating areas, inspect wire routing for possible damage or
pinching.
Heat Sensitive
SGI839

CONSULT-II CHECKING SYSTEM
GI-39
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NOTE:
The preceding schematic is an example and may not be a true representation of the vehicle. The actual DDL1
circuits (CAN lines) from DLC pins 6 and 14 as well as the DDL2 circuit (K-line) from DLC pin 7 may be con-
nected to more than one system. A short in a DDL circuit connected to a control unit in one system may affect
CONSULT-II access to other systems.
Symptom Check item
CONSULT-II cannot access
any system.• CONSULT-II DLC power supply circuit (Terminal 8) and ground circuit (Terminal 4). For detailed cir-
cuit, refer to EC-643, "
Wiring Diagram".
• CONSULT-II DLC cable and CONSULT-II CONVERTER.
CONSULT-II cannot access in-
dividual system. (Other sys-
tems can be accessed.)• CONSULT-II program card (Check the appropriate CONSULT-II program card for the system. Refer
to GI-36, "
Checking Equipment".
• Power supply and ground circuit for the control unit of the system (For detailed circuit, refer to wiring
diagram for each system).
• Open or short circuit between the system and CONSULT-II DLC (For detailed circuit, refer to wiring
diagram for each system).
• Open or short circuit in CAN or K communication line. Refer to LAN-7
.

IDENTIFICATION INFORMATION
GI-47
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Identification NumberINFOID:0000000003531504
VEHICLE IDENTIFICATION NUMBER ARRANGEMENT
1. Emission control information label 2. Tire placard 3. F.M.V.S.S. certification label
4. Vehicle identification number plate 5. Vacuum hose diagram
WAIA0053E
Position Character Qualifier Definition
1
5N3 Manufacturer 5N3: USA produced multi-purpose vehicle 2
3
4 A Engine type A: VK56DE
5 A Vehicle line A: Infiniti QX56
6 0 Model change (0-9)
7 8 Body type 8: 4 door wagon
8AGross vehicle
weight ratingA: 2WD, 4-wheel ABS, Class E
B: 4WD, 4-wheel ABS, Class E
9 * Check digit(0 to 9 or X) The code for the check digit is determined by a mathematical com-
putation.
10 7 Model year 2007
11 NManufacturing
plantN: Canton Mississippi
12
XXXXXVehicle serial num-
berChassis number 13
14
15
16
17

GW-1
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SECTION GW
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CONTENTS
GLASSES, WINDOW SYSTEM & MIRRORS
SERVICE INFORMATION ............................3
PRECAUTIONS ...................................................3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
3
Handling for Adhesive and Primer ............................3
PREPARATION ...................................................4
Special Service Tool .................................................4
Commercial Service Tool ..........................................4
SQUEAK AND RATTLE TROUBLE DIAGNO-
SIS .......................................................................
5
Work Flow .................................................................5
Generic Squeak and Rattle Troubleshooting ............7
Diagnostic Worksheet ...............................................9
WINDSHIELD GLASS ........................................11
Removal and Installation .........................................11
REAR WINDOW GLASS AND MOLDING .........13
Removal and Installation .........................................13
POWER WINDOW SYSTEM ..............................15
Component Parts and Harness Connector Loca-
tion ..........................................................................
15
System Description .................................................15
CAN Communication System Description ...............18
Schematic ...............................................................19
Wiring Diagram - WINDOW- ...................................21
Main Power Window and Door Lock/Unlock
Switch Harness Connector Terminal Layout ...........
28
Terminal and Reference Value for Main Power
Window and Door Lock/Unlock Switch ...................
29
Power Window and Door Lock/Unlock Switch RH
Harness Connector Terminal Layout ......................
30
Terminal and Reference Value for Power Window
and Door Lock/Unlock Switch RH ...........................
30
Terminal and Reference Value for BCM .................31
Work Flow ...............................................................31
CONSULT-II Function (BCM) ..................................31
Trouble Diagnosis Symptom Chart ..........................32
BCM Power Supply and Ground Circuit Inspection
....
34
Main Power Window and Door Lock/Unlock
Switch Power Supply and Ground Circuit Inspec-
tion ...........................................................................
34
Power Window and Door Lock/Unlock Switch RH
Power Supply and Ground Circuit Inspection ..........
35
Front Power Window Motor LH Circuit Inspection ....36
Front Power Window Motor RH Circuit Inspection ....37
Limit Switch Circuit Inspection Front LH ..................37
Limit Switch Circuit Inspection Front RH .................38
Encoder Circuit Inspection Front LH ........................40
Encoder Circuit Inspection Front RH .......................41
Door Switch Check ..................................................43
Front Door Lock Assembly LH (Key Cylinder
Switch) Check ..........................................................
44
Power Window Serial Link Check Front LH and
RH ...........................................................................
46
Rear Power Window Control Unit LH or RH Power
Supply and Ground Circuit Inspection .....................
48
Rear Power Window Switch LH or RH Power Sup-
ply and Ground Circuit Inspection ...........................
49
Rear Power Window Motor LH Circuit Inspection ....50
Rear Power Window Motor RH Circuit Inspection ....50
Limit Switch Circuit Inspection Rear LH and RH .....51
Encoder Circuit Inspection Rear LH or RH ..............53
Power Window Serial Link Check Rear LH or RH ....54
Rear Power Vent Window Switch Circuit Inspec-
tion ...........................................................................
55
Rear Power Vent Window Motor LH Circuit In-
spection ...................................................................
55
Rear Power Vent Window Motor RH Circuit In-
spection ...................................................................
56
Rear Power Vent Window Relay (OPEN) Check ....56
Rear Power Vent Window Relay (CLOSE) Check ....57
FRONT DOOR GLASS AND REGULATOR .....59
Removal and Installation .........................................59
REAR DOOR GLASS AND REGULATOR .......62

GW-2
Removal and Installation ........................................62
SIDE WINDOW GLASS .....................................65
Removal and Installation ........................................65
INSIDE MIRROR ................................................66
Wiring Diagram - I/MIRR - ......................................66
Removal and Installation ........................................66
REAR WINDOW DEFOGGER ...........................68
Component Parts and Harness Connector Loca-
tion ..........................................................................
68
System Description .................................................68
CAN Communication System Description ..............69
Schematic ...............................................................70
Wiring Diagram - DEF - ..........................................71
Terminal and Reference Value for BCM .................73
Terminal and Reference Value for IPDM E/R .........73
Work Flow ...............................................................74
CONSULT-II Function (BCM) .................................74
Trouble Diagnosis Symptom Chart .........................74
BCM Power Supply and Ground Circuit Inspection
...
75
Rear Window Defogger Switch Circuit Inspection ...75
Rear Window Defogger Circuit Inspection ..............76
Door Mirror Defogger Power Supply Circuit In-
spection ...................................................................
77
Door Mirror LH (Door Mirror Defogger) Circuit In-
spection ...................................................................
78
Door Mirror RH (Door Mirror Defogger) Circuit In-
spection ...................................................................
79
Rear Window Defogger Signal Inspection ..............80
Filament Check .......................................................80
Filament Repair .......................................................81
DOOR MIRROR .................................................83
Wiring Diagram - MIRROR - ...................................83
Door Mirror Assembly .............................................84
Door Mirror Glass ....................................................84