INFINITI QX56 2011 Factory Service Manual

HIGH AND LOW REVERSE CLUTCHTM-293
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
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AssemblyINFOID:0000000006226938
1. Install high and low reverse clutch drive plates, high and low reverse clutch driven plates, and high and low reverse clutch
retaining plate in high and low reverse clutch drum.
CAUTION:
Check the order of plates.
2. Install snap ring in high and low reverse clutch drum using a flat- bladed screwdriver.
CAUTION:
 Be careful not to scratch high and low reverse clutch
drum.
 Be careful not to damage snap ring.
3. Install bearing race to high and low reverse clutch drum. CAUTION:
Check the direction of needle bearing. Refer to TM-222,
"Location of Needle Bearings and Bearing Races".
InspectionINFOID:0000000006226939
INSPECTION AFTER REMOVAL
Check the following items. If necessary, replace high and low reverse clutch assembly.
High and Low Reverse Clutch Snap Ring
Check for deformation, fatigue or damage.
High and Low Reverse Clutch Drive Plates
Check facing for burns, cracks or damage.
High and Low Reverse Clutch Retaining Plate and Driven Plates
Check facing for burns, cracks or damage.
1: Snap ring
2 : Retaining plate
3 : Drive plate (five pieces)
4 : Driven plate (five pieces)
SCIA7134E
SCIA2868E
SCIA5215E
Revision: 2010 May2011 QX56

TM-294
< UNIT DISASSEMBLY AND ASSEMBLY >[7AT: RE7R01B]
DIRECT CLUTCH
DIRECT CLUTCH
Exploded ViewINFOID:0000000006226940
DisassemblyINFOID:0000000006226941
1. Remove snap rings from direct clutch drum using a flat-bladed
screwdriver.
CAUTION:
 Be careful not to scratch direct clutch drum and direct
clutch retaining plate.
 Be careful not to damage snap ring.
2. Remove direct clutch drive plates, direct clutch driven plates, direct clutch retaining plate and direct clutch dish plate from
direct clutch drum.
AssemblyINFOID:0000000006226942
1. Install direct clutch drive plates, direct clutch driven plates, directclutch retaining plate and direct clutch dish plate in direct clutch
drum.
CAUTION:
Check the order of plates.
1. Direct clutch drum 2. Direct clutch driven plate 3. Direct clutch retaining plate
4. Snap ring 5. Direct clutch drive plate 6. Direct clutch dish plate
SCIA6983E
SCIA2868E
1: Snap ring
2 : Retaining plate
3 : Drive plate (six pieces)
4 : Driven plate (six pieces)
5 : Dish plate
SCIA6951E
Revision: 2010 May2011 QX56

DIRECT CLUTCHTM-295
< UNIT DISASSEMBLY AND ASSEMBLY > [7AT: RE7R01B]
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2. Install snap rings in direct clutch drum using a flat-bladed screw- driver.
CAUTION:
 Be careful not to scratch direct clutch drum and direct
clutch retaining plate.
 Be careful not to damage snap ring.
InspectionINFOID:0000000006226943
INSPECTION AFTER REMOVAL
Check the following items. If necessary, replace direct clutch assembly.
Direct Clutch Snap Ring
Check for deformation, fatigue or damage.
Direct Clutch Drive Plates
Check facing for burns, cracks or damage.
Direct Clutch Retaining Plate and Driven Plates
Check facing for burns, cracks or damage.
SCIA2868E
Revision: 2010 May2011 QX56

TM-296
< SERVICE DATA AND SPECIFICATIONS (SDS) [7AT: RE7R01B]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000006226944
*1: Refer to
MA-10, "Fluids and Lubricants".
*2: The fluid capacity is the reference value.
Vehicle Speed at Which Gear Shifting OccursINFOID:0000000006226945
NORMAL MODE
Unit: km/h (MPH)
 At half throttle, the accelerator opening is 4/8 of the full opening.
TOW MODE
Applied model 2WD 4WD
Transmission model code number 1XR1E 1XR1D
Stall torque ratio 1.93 : 1
Transmission gear ratio 1st 4.887
2nd 3.170
3rd 2.027
4th 1.412
5th 1.000
6th 0.864
7th 0.775
Reverse 4.041
Recommended fluid Genuine NISSAN Matic S ATF
*1
Fluid capacity10.0 liter (10-5/8 US qt, 8-3/4 Imp qt)*2
CAUTION:
 Use only Genuine NISSAN Matic S ATF. Never mix with other ATF.
 Using ATF other than Genuine NISSAN Matic S ATF will cause deterioration driveability and A/T durability, and may damage
the A/T, which is not covered by the INFINITI new vehicle limited warranty.
Gear position Throttle position
Full throttle Half throttle
D
1 → D256 – 60 (35 – 37) 42 – 46 (26 – 29)
D
2 → D389 – 97 (55 – 60) 73 – 81 (45 – 50)
D
3 → D4141 – 151 (88 – 94) 112 – 122 (70 – 76)
D
4 → D5205 – 215 (127 – 134) 134 – 144 (83 – 89)
D
5 → D6250 – 260 (155 – 162) 173 – 183 (108 – 114)
D
6 → D7250 – 260 (155 – 162) 206 – 216 (128 – 134)
D
7 → D6240 – 250 (149 – 155) 161 – 171 (100 – 106)
D
6 → D5240 – 250 (149 – 155) 130 – 140 (81 – 87)
D
5 → D4180 – 190 (112 – 118) 84 – 94 (52 – 58)
D
4 → D3126 – 136 (78 – 85) 58 – 68 (36 – 42)
D
3 → D266 – 74 (41 – 46) 30 – 38 (19 – 24)
D
2 → D123 – 27 (14 – 17) 10 – 14 (6 – 9)
Revision: 2010 May2011 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)
TM-297
< SERVICE DATA AND SPECIFICATIONS (SDS) [7AT: RE7R01B]
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Unit: km/h (MPH)
 At half throttle, the accelerator opening is 4/8 of the full opening.
 The vehicle speed included in the above table is a speed with the tow mode ON and a heavy load towed.
Vehicle Speed at Which Lock-up Occurs/ReleasesINFOID:0000000006226946
 Vehicle speed with D5 position.
 At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal OFF)
 At half throttle, the accelerator opening is 4/8 of the full opening.
Stall SpeedINFOID:0000000006226947
2WD MODELS
4WD MODELS
*: Refer to DLN-18, "4WD SYSTEM : System Description".
Torque ConverterINFOID:0000000006226948
Gear position Throttle position
Full throttle Half throttle
D
1 → D257 – 61 (35 – 38) 50 – 54 (31 – 34)
D
2 → D389 – 97 (55 – 60) 76 – 84 (47 – 52)
D
3 → D4141 – 151 (88 – 94) 116 – 126 (72 – 78)
D
4 → D5205 – 215 (127 – 134) 159 – 169 (99 – 105)
D
5 → D6251 – 261 (156 – 162) 189 – 199 (117 – 124)
D
6 → D7251 – 261 (156 – 162) 215 – 225 (134 – 140)
D
7 → D6240 – 250 (149 – 155) 161 – 171 (100 – 106)
D
6 → D5240 – 250 (149 – 155) 130 – 140 (81 – 87)
D
5 → D4180 – 190 (112 – 118) 84 – 94 (52 – 58)
D
4 → D3126 – 136 (78 – 85) 58 – 68 (36 – 42)
D
3 → D266 – 74 (41 – 46) 30 – 38 (19 – 24)
D
2 → D124 – 28 (15 – 17) 10 – 14 (6 – 9)
Throttle position Vehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 50 – 58 (31 – 36) 50 – 58 (31 – 36)
Half throttle 163 – 171 (101 – 106) 163 – 171 (101 – 106)
Sta ll sp ee d 1,777 – 2,077 rpm
4WD shift switch* AUTO, 4H 4L
Stall speed 1,777 – 2,077 rpm 1,540 – 1,840 rpm
Dimension between end of converter housing and torque converter 24.0 mm (0.94 in)
Revision: 2010 May2011 QX56

TM-298
< SERVICE DATA AND SPECIFICATIONS (SDS) [7AT: RE7R01B]
SERVICE DATA AND SPECIFICATIONS (SDS)
Total End Play
INFOID:0000000006226949
Unit: mm (in)
Reverse Brake ClearanceINFOID:0000000006226950
Unit: mm (in)
Front Brake ClearanceINFOID:0000000006226951
Unit: mm (in)
2346 Brake ClearanceINFOID:0000000006226952
Unit: mm (in)
Total end play Standard 0.25 – 0.55 (0.0098 – 0.0217)
Thickness of bearing race for adjusting total end play 1.0 (0.039)
1.2 (0.047)
1.4 (0.055)
1.6 (0.063)
1.8 (0.071)
2.0 (0.079)
2.2 (0.087)
Reverse brake clearance Standard 0.8 – 1.2 (0.031 – 0.047)
Thickness of retaining plate for adjusting reverse brake clearance4.8 (0.189)
5.0 (0.197)
5.2 (0.205)
5.4 (0.213)
5.6 (0.220)
5.8 (0.228)
6.0 (0.236)
Front brake clearance Standard 0.7 – 1.1 (0.028 – 0.043)
Thickness of retaining plate for adjusting front brake clearance
2.0 (0.079)
2.2 (0.087)
2.4 (0.094)
2.6 (0.102)
2.8 (0.110)
2346 brake clearance Standard 1.5 – 1.9 (0.059 – 0.075)
Thickness of snap ring for adjusting 2346 brake clearance 2.0 (0.079)
2.2 (0.087)
2.4 (0.094)
2.6 (0.102)
2.8 (0.110)
3.0 (0.118)
Revision: 2010 May2011 QX56

VTL-1
VENTILATION, HEATER & AIR CONDITIONER
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SECTION VTL
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CONTENTS
VENTILATION SYSTEM
PRECAUTION ................ ...............................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect .....................................
3
PREPARATION ............................................5
PREPARATION .............................................. .....5
Commercial Service Tool .................................... ......5
SYSTEM DESCRIPTION ..............................6
VENTILATION SYSTEM ................................ .....6
VENTILATION SYSTEM (FRONT AIR CONDI-
TIONING) ............................................................... ......
6
VENTILATION SYSTEM (FRONT AIR CONDI-
TIONING) : System Description ................................
6
VENTILATION SYSTEM (REAR AIR CONDITION-
ING) ........................................................................ ......
7
VENTILATION SYSTEM (REAR AIR CONDI-
TIONING) : System Description ................................
7
REMOVAL AND INSTALLATION ................8
DUCT AND GRILLE ....................................... .....8
Exploded View .................................................... ......8
CENTER VENTILATOR GRILLE .......................... ....10
CENTER VENTILATOR GRILLE : Removal and
Installation ...............................................................
10
SIDE VENTILATOR GRILLE ................................. ....10
SIDE VENTILATOR GRILLE : Removal and In-
stallation ..................................................................
10
FRONT DEFROSTER GRILLE .............................. ....10
FRONT DEFROSTER GRILLE : Removal and In-
stallation ..................................................................
10
UPPER VENTILATOR GRILLE .................................10
UPPER VENTILATOR GRILLE : Removal and In-
stallation .............................................................. ....
10
SIDE VENTILATOR DUCT .................................... ....10
SIDE VENTILATOR DUCT : Removal and Instal-
lation ........................................................................
10
UPPER VENTILATOR DUCT ....................................10
UPPER VENTILATOR DUCT : Removal and In-
stallation .............................................................. ....
10
FRONT DEFROSTER NOZZLE .................................11
FRONT DEFROSTER NOZZLE : Removal and In-
stallation .............................................................. ....
11
SIDE DEFROSTER NOZZLE .....................................11
SIDE DEFROSTER NOZZLE : Removal and In-
stallation .............................................................. ....
11
FLOOR DUCT 1 ..................................................... ....11
FLOOR DUCT 1 : Removal and Installation ............11
FLOOR DUCT 2 ..................................................... ....11
FLOOR DUCT 2 : Removal and Installation ............11
FLOOR DUCT 3 ..................................................... ....11
FLOOR DUCT 3 : Removal and Installation ............11
REAR FLOOR GRILLE .......................................... ....12
REAR FLOOR GRILLE : Removal and Installation
....
12
FOOT DUCT ........................................................... ....12
FOOT DUCT : Removal and Installation .................12
FOOT GRILLE ....................................................... ....12
FOOT GRILLE : Removal and Installation ..............12
REAR VENTILATOR DUCT LOWER .................... ....12
Revision: 2010 May2011 QX56

VTL-2
REAR VENTILATOR DUCT LOWER : Removal
and Installation .......................................................
12
REAR VENTILATOR DUCT UPPER ........................12
REAR VENTILATOR DUCT UPPER : Removal
and Installation .................................................... ...
12
ROOF DUCT .......................................................... ...13
ROOF DUCT : Removal and Installation ................13
REAR VENTILATOR GRILLE ............................... ...13
REAR VENTILATOR GRILLE : Removal and In-
stallation .................................................................
13
BLOWER UNIT ..................................................14
Exploded View ..................................................... ...14
Removal and Installation ........................................15
BLOWER MOTOR .............................................16
FRONT A/C UNIT ................................................... ...16
FRONT A/C UNIT : Exploded View ........................16
FRONT A/C UNIT : Removal and Installation .........16
REAR A/C UNIT ASSEMBLY ...................................16
REAR A/C UNIT ASSEMBLY : Exploded View ... ...16
REAR A/C UNIT ASSEMBLY : Removal and In-
stallation ..................................................................
16
IN-CABIN MICROFILTER .................................17
Exploded View ..................................................... ...17
Removal and Installation .........................................17
Replacement ...........................................................17
SERVICE DATA AND SPECIFICATIONS
(SDS) .......... ................................................
18
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ...
18
In-cabin microfilter ................................................ ...18
Revision: 2010 May2011 QX56

PRECAUTIONSVTL-3
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006376373
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.
Precaution Necessary for Steering Wh eel Rotation after Battery Disconnect
INFOID:0000000006376453
NOTE:
 Before removing and installing any control units, first tu rn the push-button ignition switch to the LOCK posi-
tion, then disconnect both 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 batte ry 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 wil l 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

VTL-4
< PRECAUTION >
PRECAUTIONS
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 igniti on switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT-III.
Revision: 2010 May2011 QX56