wiring diagram INFINITI QX56 2007 Factory Service Manual

SRS-8
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
Trouble Diagnosis IntroductionINFOID:0000000003532861
CAUTION:
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so in
this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness con-
nectors.
• Do not attempt to repair, splice or modify SRS wiring harnesses. If a harness is damaged, replace it
with a new one.
• Keep ground connections clean.
DIAGNOSIS FUNCTION
The SRS self-diagnosis results can be read by using “AIR BAG” warning lamp and/or CONSULT-II.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system mal-
function through the operation of the “AIR BAG” warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the “AIR BAG” warning lamp and CONSULT-II are as follows:
HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIR
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malfunction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Information From Customer
WHAT - Vehicle model
WHEN - Date, Frequencies
WHERE - Road conditions
HOW - Operating conditions, Symptoms
Preliminary Check
Check that the following parts are in good order.
• Battery (Refer to SC-4, "
How to Handle Battery" .)
• Fuse (Refer to SRS-12, "
Wiring Diagram - SRS -" .)
• System component-to-harness connections
WORK FLOW
User mode Diagnosis mode Display type
“AIR BAG” warning lamp X X ON-OFF operation
CONSULT-II — X Monitoring

SRS-12
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Wiring Diagram - SRS -
INFOID:0000000003532864
WHWA0312E

TF-1
DRIVELINE/AXLE
C
E
F
G
H
I
J
K
L
M
SECTION TF
A
B
TF
N
O
P
CONTENTS
TRANSFER
SERVICE INFORMATION ............................3
PRECAUTIONS ...................................................3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
3
Precaution for Transfer Assembly and Transfer
Control Unit Replacement .........................................
3
Precaution .................................................................4
Service Notice ...........................................................4
PREPARATION ...................................................6
Special Service Tool .................................................6
Commercial Service Tool ..........................................9
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ............................
10
NVH Troubleshooting Chart ....................................10
TRANSFER FLUID .............................................11
Replacement ...........................................................11
Inspection ................................................................11
ALL-MODE 4WD SYSTEM ................................12
Cross-Sectional View ..............................................12
Power Transfer ........................................................12
System Description .................................................14
Schematic ...............................................................19
CAN Communication ...............................................20
TROUBLE DIAGNOSIS .....................................21
How to Perform Trouble Diagnosis .........................21
Location of Electrical Parts ......................................22
Circuit Diagram .......................................................23
Wiring Diagram - T/F - .............................................24
Inspections Before Trouble Diagnosis ....................31
Trouble Diagnosis Chart by Symptom ....................34
Transfer Control Unit Input/Output Signal Refer-
ence Value ..............................................................
35
CONSULT-II Function (ALL MODE AWD/4WD) .....42
Self-Diagnosis Procedure .......................................48
TROUBLE DIAGNOSIS FOR SYSTEM ............51
Power Supply Circuit for Transfer Control Unit ........51
Transfer Control Unit ...............................................53
Output Shaft Revolution Signal (TCM) ....................53
Vehicle Speed Sensor (ABS) ..................................54
Neutral-4LO Switch .................................................54
4WD Shift Switch .....................................................57
Wait Detection Switch ..............................................60
PNP Switch Signal (TCM) .......................................63
Actuator Motor .........................................................64
Actuator Position Switch ..........................................69
Transfer Control Device ...........................................72
Engine Speed Signal (ECM) ....................................76
Clutch Pressure Solenoid ........................................76
2-4WD Solenoid ......................................................80
Transfer Motor .........................................................84
Transfer Fluid Temperature .....................................90
Clutch Pressure Switch ...........................................92
Line Pressure Switch ...............................................94
Throttle Position Signal (ECM) ................................97
ABS Operation Signal (ABS) ...................................97
VDC Operation Signal (ABS) ...................................98
TCS Operation Signal (ABS) ...................................98
CAN Communication Line .......................................99
ATP Switch ..............................................................99
TROUBLE DIAGNOSIS FOR SYMPTOMS ....102
4WD Shift Indicator Lamp and 4LO Indicator
Lamp Do Not Turn ON ...........................................
102
4WD Warning Lamp Does Not Turn ON ...............104
4WD Shift Indicator Lamp or 4LO Indicator Lamp
Does Not Change ..................................................
107
ATP Warning Lamp Turns ON ...............................109
4LO Indicator Lamp Repeats Flashing ..................110
4WD Warning Lamp Flashes Rapidly ....................111
4WD Warning Lamp Flashes Slowly .....................112
Heavy Tight-corner Braking Symptom Occurs ......113
4WD System Does Not Operate ............................114
TRANSFER CONTROL UNIT .........................115
Removal and Installation .......................................115

TF-24
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Wiring Diagram - T/F -
INFOID:0000000003532523
BDWA0166E

WT-1
SUSPENSION
C
D
F
G
H
I
J
K
L
M
SECTION WT
A
B
WT
N
O
PCONTENTS
ROAD WHEELS & TIRES
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
PREPARATION ...................................................3
Special Service Tool .................................................3
Commercial Service Tool ..........................................3
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING .............................
4
NVH Troubleshooting Chart ......................................4
WHEEL ................................................................5
Inspection ..................................................................5
WHEEL AND TIRE ASSEMBLY .........................6
Balancing Wheels .....................................................6
Rotation .....................................................................7
LOW TIRE PRESSURE WARNING SYSTEM .....8
System Component ...................................................8
System Description ...................................................8
CAN COMMUNICATION ....................................10
System Description .................................................10
TROUBLE DIAGNOSIS .....................................11
Wiring Diagram- T/WARN - .....................................11
Terminal and Reference Value (BCM) ....................12
ID Registration Procedure .......................................12
Transmitter Wake Up Operation .............................14
CONSULT-II Function (BCM) ..................................15
Self-Diagnosis .........................................................15
How to Perform Trouble Diagnosis for Quick and
Accurate Repair .......................................................
17
Preliminary Check ...................................................18
Flash Code/Symptom Chart ....................................18
TROUBLE DIAGNOSIS FOR SELF-DIAG-
NOSTIC ITEMS .................................................
20
Data from Transmitter Not Being Received .............20
Transmitter Malfunction ...........................................20
Transmitter Pressure Malfunction ............................21
Vehicle Speed Signal ..............................................21
Ignition Signal ..........................................................22
TROUBLE DIAGNOSIS FOR SYMPTOMS ......23
Low Tire Pressure Warning Lamp Does Not Come
On When Ignition Switch Is Turned On ...................
23
Low Tire Pressure Warning Lamp Stays On When
Ignition Switch Is Turned On ...................................
23
Low Tire Pressure Warning Lamp Flashes When
Ignition Switch Is Turned On ...................................
24
Hazard Warning Lamps Flash When Ignition
Switch Is Turned On ................................................
25
"TIRE PRESSURE" Information in Display Unit
Does Not Exist .........................................................
25
ID Registration Cannot Be Completed ....................25
REMOVAL AND INSTALLATION .....................26
Transmitter (Pressure Sensor) ................................26
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
28
Road Wheel .............................................................28
Tire ..........................................................................28

TROUBLE DIAGNOSIS
WT-11
< SERVICE INFORMATION >
C
D
F
G
H
I
J
K
L
MA
B
WT
N
O
P
TROUBLE DIAGNOSIS
Wiring Diagram- T/WARN -INFOID:0000000003532695
WEWA0047E

WW-1
ELECTRICAL
C
D
E
F
G
H
I
J
L
M
SECTION WW
A
B
WW
N
O
P
CONTENTS
WIPER, WASHER & HORN
SERVICE INFORMATION ............................2
PRECAUTION .....................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
FRONT WIPER AND WASHER SYSTEM ..........3
Component Parts and Harness Connector Loca-
tion ............................................................................
3
System Description ...................................................3
CAN Communication System Description .................5
Schematic .................................................................6
Wiring Diagram - WIPER - ........................................7
Terminal and Reference Value for BCM ...................9
Terminal and Reference Value for IPDM E/R ...........9
Work Flow ...............................................................10
Preliminary Check ...................................................10
CONSULT-II Function (BCM) ..................................11
CONSULT-II Function (IPDM E/R) ..........................12
Front Wiper Does Not Operate ...............................13
Front Wiper Arms ....................................................21
Wiper Motor and Linkage ........................................22
Washer Nozzle Adjustment .....................................23
Washer Tube Layout ...............................................23
Wiper and Washer Switch .......................................23
Washer Fluid Reservoir ...........................................24
Washer Motor ..........................................................24
REAR WIPER AND WASHER SYSTEM ...........26
Component Parts and Harness Connector Loca-
tion ..........................................................................
26
System Description ..................................................26
Wiring Diagram - WIP/R - ........................................29
Terminal and Reference Value for BCM ..................30
How to Proceed with Trouble Diagnosis ..................30
Preliminary Check ...................................................31
CONSULT-II Function (BCM) ..................................31
Rear Wiper Does Not Operate ................................33
Rear Wiper Stop Position Is Incorrect .....................34
Only Rear Wiper Does Not Operate ........................36
Only Rear Wiper Intermittent Does Not Operate .....36
Wiper Does Not Wipe When Rear Washer Oper-
ates ..........................................................................
36
Rear Wiper Arm .......................................................37
Rear Wiper Motor ....................................................37
Rear Washer Nozzle Adjustment ............................38
Rear Washer Tube Layout ......................................39
Rear Washer Nozzle ...............................................39
Rear Wiper and Washer Switch ..............................39
Washer Fluid Reservoir ...........................................40
Washer Motor ..........................................................40
POWER SOCKET .............................................41
Wiring Diagram - P/SCKT - .....................................41
Front Power Socket LH, Rear Cargo Power Sock-
et ..............................................................................
41
Front Power Socket RH (For Cigarette Lighter),
Console Power Socket ............................................
42
HORN ................................................................43
Wiring Diagram - HORN - ........................................43
Removal and Installation .........................................43

FRONT WIPER AND WASHER SYSTEM
WW-7
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
L
MA
B
WW
N
O
P
Wiring Diagram - WIPER -INFOID:0000000003533555
WKWA3609E

REAR WIPER AND WASHER SYSTEM
WW-29
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
L
MA
B
WW
N
O
P
Wiring Diagram - WIP/R -INFOID:0000000003533572
WKWA2328E

POWER SOCKET
WW-41
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
L
MA
B
WW
N
O
P
POWER SOCKET
Wiring Diagram - P/SCKT -INFOID:0000000003533590
Front Power Socket LH, Rear Cargo Power SocketINFOID:0000000003533591
REMOVAL AND INSTALLATION
Removal
WKWA3613E