4WD INFINITI QX56 2011 Factory Service Manual

4WD WARNING LAMP BLINKS SLOWLYDLN-103
< SYMPTOM DIAGNOSIS > [TRANSFER: ATX90A]
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4WD WARNING LAMP BLINKS SLOWLY
DescriptionINFOID:0000000006222319
4WD warning lamp blinks at approximately 2 seconds intervals while driving.
Diagnosis ProcedureINFOID:0000000006222320
1.CHECK TIRE
Check the following.
 Tire pressure
 Wear condition
 Front and rear tire size (There is no difference between front and rear tires.)
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-detected parts. And t hen, drive the vehicle at speed of 20 km/h (12 MPH)
or more for 5 seconds or more. Improper size information is initialized accordingly.
2.TERMINAL INSPECTION
Check 4WD control unit harness connector for disconnection.
Is the inspection result normal?
YES >> Replace transfer control unit. Refer to DLN-107, "Removal and Installation".
NO >> Repair or replace the error-detected parts.
Revision: 2010 May2011 QX56

DLN-104
< SYMPTOM DIAGNOSIS >[TRANSFER: ATX90A]
INFORMATION DISPLAY IS NOT DISPLAYED
INFORMATION DISPLAY IS NOT DISPLAYED
DescriptionINFOID:0000000006222321
Information display is not displayed.
NOTE:
When the combination meter receives 4WD shift swit
ch signal, it displays a message on the information dis-
play and inform the driver of 4WD mode st atus. About indication contents, refer to DLN-18, "
4WD SYSTEM :
System Description" (4WD mode).
Diagnosis ProcedureINFOID:0000000006222322
1.CHECK 4WD SHIFT SWITCH
Perform trouble diagnosis for 4WD shift switch. Refer to DLN-67, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-detected parts.
2.CHECK 4WD MODE INDICATOR LAMP
Perform trouble diagnosis for 4WD mode indicator. Refer to DLN-98, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace error-detected parts.
3.CHECK THE INFORMATION DISPLAY
Check that information except 4WD mode is displayed on information display.
Is the inspection result normal?
YES >> Replace transfer control unit. Refer to DLN-107, "Removal and Installation".
NO >> Check information display. Refer to MWI-29, "
On Board Diagnosis Function".
Revision: 2010 May2011 QX56

DLN-108
< REMOVAL AND INSTALLATION >[TRANSFER: ATX90A]
4WD MODE SWITCH
4WD MODE SWITCH
Removal and InstallationINFOID:0000000006222328
REMOVAL
NOTE:
4WD shift switch is integrated in 4WD switch assembly.
1. Remove console finisher assembly from center console assembly. Refer to
IP-25, "
Removal and Installa-
tion"
2. Disconnect 4WD switch assembly harness connector.
3. Press 4WD switch assembly fixing pawls, and remove 4WD switch assembly from console finisher
assembly.
INSTALLATION
Install in the reverse order of removal.
Revision: 2010 May2011 QX56

DLN-116
< REMOVAL AND INSTALLATION >[TRANSFER: ATX90A]
TRANSFER HI-LO POSITION SENSOR
TRANSFER HI-LO POSITION SENSOR
Exploded ViewINFOID:0000000006222337
Removal and InstallationINFOID:0000000006222338
REMOVAL
1. Turn the ignition switch OFF.
2. Disconnect negative battery terminal.
CAUTION:
Wait for 5 seconds after turn ing ignition switch OFF.
3. Remove exhaust front tube (LH). Refer to EX-5, "
Removal and Installation".
4. Support transfer assembly and transmission assembly with a jack.
5. Remove front suspension rear cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
6. Remove rear engine mounting cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
7. Remove heat insulator of exhaust front tube (LH).
8. Lower jack to the position where the tr ansfer Hi-Lo position sensor can be removed.
9. Disconnect the transfer Hi-Lo position sensor connector.
10. Remove the transfer Hi-Lo position sensor.
11. Perform inspection after removal. Refer to DLN-116, "
Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Never damage O-ring of transfer Hi-Lo position sensor.
 Perform inspection after installation. Refer to DLN-116, "
Inspection".
InspectionINFOID:0000000006222339
INSPECTION AFTER REMOVAL
Check the O-ring assembled transfer Hi-Lo position sens or for wear, crack and damage. Replace the transfer
Hi-Lo position sensor if there is malfunction.
INSPECTION AFTER INSTALLATION
After driving, check the surface fitting transfer Hi-Lo position sensor to transfer assembly for fluid leakage.
1. Transfer Hi-Lo position sensor 2. Transfer assembly
: Vehicle front
Refer to GI-4, "
Components" for symbols not described above.
JPDIE0282GB
Revision: 2010 May2011 QX56

TRANSFER ROTARY POSITION SENSORDLN-117
< REMOVAL AND INSTALLATION > [TRANSFER: ATX90A]
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TRANSFER ROTARY POSITION SENSOR
Exploded ViewINFOID:0000000006222340
Removal and InstallationINFOID:0000000006222341
REMOVAL
1. Turn the ignition switch OFF.
2. Disconnect negative battery terminal. CAUTION:
Wait for 5 seconds after turning ignition switch OFF.
3. Support transfer assembly and transmission assembly with a jack.
4. Remove front suspension rear cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
5. Remove rear engine mounting cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
6. Disconnect the transfer rotary position sensor connector.
7. Remove the transfer rotary position sensor.
8. Perform inspection after removal. Refer to DLN-118, "
Inspection".
INSTALLATION
1. Remove the transfer control actuator. Refer to DLN-114, "Exploded View"
2. Shift transfer assembly into AUTO as follows.
a. Install the spline socket (A) [SST: KV10119400 ( — )] to
transfer assembly in the figure.
b. Turn the shaft (B) direction and remove the spline socket at a position returning to (C) direction by spring power.
CAUTION:
The maximum turning force shall be 30 N·m (3.1 kg-m, 22 ft-
lb).
1. Transfer assembly 2. Transfer rotary position sensor
: Vehicle front
Refer to GI-4, "
Components" for symbols not described above.
JPDIE0283GB
JPDIE0184ZZ
Revision: 2010 May2011 QX56

TRANSFER LOCK POSITION SENSORDLN-119
< REMOVAL AND INSTALLATION > [TRANSFER: ATX90A]
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TRANSFER LOCK PO SITION SENSOR
Exploded ViewINFOID:0000000006222343
Removal and InstallationINFOID:0000000006222344
REMOVAL
1. Turn the ignition switch OFF.
2. Disconnect negative battery terminal.
CAUTION:
Wait for 5 seconds after turning ignition OFF.
3. Support transfer assembly and transmission assembly with a jack.
4. Remove rear engine mounting cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
5. Lower jack to the position where the tr ansfer lock position sensor can be removed.
6. Disconnect the transfer lock position sensor connector.
7. Remove the transfer lock position sensor.
8. Perform inspection after removal. Refer to DLN-119, "
Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Never damage O-ring of transfer lock position sensor.
 Perform inspection after installation. Refer to DLN-119, "
Inspection".
 When replacing the transfer lock position sensor, perform learning of transfer lock position sensor. Refer to
DLN-44, "
Work Procedure".
InspectionINFOID:0000000006222345
INSPECTION AFTER REMOVAL
Check the O-ring assembled transfer lock position sensor for wear, crack and damage. Replace the transfer
lock position sensor if there is malfunction.
INSPECTION AFTER INSTALLATION
After driving, check the surface fitting transfer lock position sensor to transfer assembly for fluid leakage.
1. Transfer lock position sensor 2. Transfer assembly
: Vehicle front
Refer to GI-4, "
Components" for symbols not described above.
JPDIE0284GB
Revision: 2010 May2011 QX56

DLN-124
< SERVICE DATA AND SPECIFICATIONS (SDS) [TRANSFER: ATX90A]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationsINFOID:0000000006222353
Applied model 4WD
V56VD A/T
Transfer model AT X 9 0 A
Fluid capacity (Approx.) (US pt, lmp pt)1.5 (3-1/8, 2-5/8)
Revision: 2010 May2011 QX56

FRONT PROPELLER SHAFTDLN-129
< REMOVAL AND INSTALLATION > [FRONT PROPELLER SHAFT: 2F P15]
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Removal and InstallationINFOID:0000000006222357
REMOVAL
1. Shift the transmission to the neutral pos ition, and then release the parking brake.
2. Remove protector A and B with power tool. Refer to SCS-39, "
PPMU, MIDDLE TUBE ASSEMBLY, PPMU
PIPE : Removal and Installation".
3. Remove rear engine mount cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
4. Put matching mark (A) on front propeller shaft flange yoke and final drive companion flange.
CAUTION:
For matching mark, use paint. Never damage propeller shaft
flange and final drive companion flange.
5. Put matching mark (A) on front propeller shaft flange yoke and transfer companion flange.
CAUTION:
For matching mark, use paint. Never damage propeller shaft
flange and transfer companion flange.
6. Remove the propeller shaft assembly fixing bolts.
7. Remove propeller shaft assembly from the front final drive and transfer.
8. Perform inspection after removal. Refer to DLN-131, "
Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Align matching mark (A) to install propeller shaft flange yoke and
transfer companion flange.
 Align matching mark (A) to install propeller shaft flange yoke and front final drive companion flange.
 After assembly, perform a driving test to check propeller shaft
vibration. If vibration occurred, separate propeller shaft from final
drive. Reinstall companion flange after rotating it by 90, 180, 270
degrees. Then perform driving test and check propeller shaft vibra-
tion again at each point.
 If propeller shaft or final drive has been replaced, connect them as follows:
- Install the propeller shaft while aligning its matching mark (A) with the matching mark (B) on the joint as close as possible.
Disassembly and AssemblyINFOID:0000000006222358
DISASSEMBLY
JPDID0207ZZ
JPDID0207ZZ
PDIA0423E
Revision: 2010 May2011 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)
DLN-133
< SERVICE DATA AND SPECIFICATIONS (SDS) [FRONT PROPELLER SHAFT: 2F P15]
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000006222360
Propeller Shaft RunoutINFOID:0000000006222361
Unit: mm (in)
Journal Axial PlayINFOID:0000000006222362
Unit: mm (in)
Applied model 4WD
VK56VD A/T
Propeller shaft model 2F P15
Number of joints 2
Type of journal bearings 1st joint Shell type
2rd joint Shell type
Coupling method with transfer Flange type
Coupling method with rear final drive Flange type
Shaft length (Spider to spider) 729 mm (28.70 in)
Shaft outer diameter 68.9 mm (2.713 in)
Item Limit
Propeller shaft runout 1.0 (0.04)
Item Standard
Journal axial play 0.06 (0.0024)
Revision: 2010 May2011 QX56

DLN-140
< SERVICE DATA AND SPECIFICATIONS (SDS) [REAR PROPELLER SHAFT: 2F P26]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000006222369
Propeller Shaft RunoutINFOID:0000000006222370
Unit: mm (in)
Journal Axial PlayINFOID:0000000006222371
Unit: mm (in)
Applied model 4WD
VK56VD A/T
Propeller shaft model 2F P26
Number of joints 2
Type of journal bearings 1st joint Shell type
2rd joint Shell type
Coupling method with transfer Flange type
Coupling method with rear final drive Flange type
Shaft length (Spider to spider) 1168mm (45.98 in)
Shaft outer diameter 101.6 mm (4.00 in)
Item Limit
Propeller shaft runout 1.0 (0.04)
Item Standard
Journal axial play 0 (0)
Revision: 2010 May2011 QX56