2011 INFINITI QX56 battery

TM-168
< SYMPTOM DIAGNOSIS >[7AT: RE7R01B]
SYSTEM SYMPTOM
Func-
tion trou-
blePoor
power
trans-
mission
Slip With selector
lever in “D”
position, ac-
celeration is
extremely
poor.
53 334 2 2 2 1
With selector
lever in “R”
position, ac-
celeration is
extremely
poor. 53 334 2 2 2 1
While starting
off by acceler-
ating in 1GR,
engine races. 3 334 2 2 2 1
While acceler-
ating in 2GR,
engine races. 3 334 2 2 22 1
While acceler-
ating in 3GR,
engine races. 3 334 2 2 22 1
While acceler-
ating in 4GR,
engine races. 3 334 2 2 22 1
While acceler-
ating in 5GR,
engine races. 3 334 2 222 2 1
While acceler-
ating in 6GR,
engine races. 3 334 2 22221
While acceler-
ating in 7GR,
engine races. 3 334 2 2 22 2 1
Lock-up 3 334 2 2 1
No creep at
all. 111111111
Extremely
large creep. 1
Symptom
Diagnostic item
Control cable
Output speed sensor
Vehicle speed signal
Accelerator pedal position sensor
Engine speed signal
Input speed sensor
A/T fluid temperature sensor
Battery voltage
Transmission range switch
Manual mode switch
Stop lamp switch
Line pressure solenoid valve
Torque converter clutch solenoid valve
Low brake solenoid valve
Front brake solenoid valve
High and low reverse clutch solenoid valve
Input clutch solenoid valve
Direct clutch solenoid valve
2346 brake solenoid valve
Anti-interlock solenoid valve
Starter relay
CAN communication
TM-101
TM-110TM-138TM-137TM-112TM-109TM-107TM-151TM-106TM-144TM-159TM-131TM-128TM-148TM-136TM-147TM-133TM-150TM-149TM-132TM-104TM-103
Revision: 2010 May2011 QX56

SYSTEM SYMPTOMTM-169
< SYMPTOM DIAGNOSIS > [7AT: RE7R01B]
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SYMPTOM TABLE 2
Symptom Diagnostic item
Control cable
Output speed sensor
Vehicle speed signal
Accelerator pedal position sensor
Engine speed signal
Input speed sensor
A/T fluid temperature sensor
Battery voltage
Transmission range switch
Manual mode switch
Stop lamp switch
Line pressure solenoid valve
Torque converter clutch solenoid valve
Low brake solenoid valve
Front brake solenoid valve
High and low reverse clutch solenoid valve
Input clutch solenoid valve
Direct clutch solenoid valve
2346 brake solenoid valve
Anti-interlock solenoid valve
Starter relay
CAN communication
TM-101
TM-110TM-138TM-137TM-112TM-109TM-107TM-151TM-106TM-144TM-159TM-131TM-128TM-148TM-136TM-147TM-133TM-150TM-149TM-132TM-104TM-103
Function
trouble
Power transmis-
sion cannot be
performed Vehicle cannot run in all
position.
3 2 111111111
Driving is not possible in
“D” position. 3 2 111111111
Driving is not possible in
“R” position. 32111
Engine stall 4 5 5 6 3 2 1
Engine stalls when selec-
tor lever shifted “N” → “D”
or “R”. 455 3 2 1
Engine does not start in
“N” or “P” position. 312 1
Engine starts in position
other than “N” or “P”. 32 1
Poor operation Vehicle does not enter
parking condition.
12
Parking condition is not
cancelled. 12
Vehicle runs with A/T in
“P” position. 12
Vehicle moves forward
with the “R” position. 12
Vehicle runs with A/T in
“N” position. 12
Vehicle moves backward
with the “D” position. 12
Revision: 2010 May2011 QX56

OUTPUT SPEED SENSORTM-195
< REMOVAL AND INSTALLATION > [7AT: RE7R01B]
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OUTPUT SPEED SENSOR
2WD
2WD : Exploded ViewINFOID:0000000006228119
2WD : Removal and InstallationINFOID:0000000006228120
REMOVAL
1. Disconnect the battery cabl e from the negative terminal.
2. Drain ATF through drain plug.
3. Separate propeller shaft assembly. Refer to DLN-143, "
Exploded View".
1. A/T 2. Oil pan gasket 3. Oil pan
4. Clip 5. Oil pan mounting bolt 6. Overflow plug
7. Drain plug 8. Drain plug gasket 9. Magnet
10. Output speed sensor 11. Self-sealing bolt 12. Bracket
13. Rear extension
*: Apply Genuine Anaerobic Liquid Gasket or equivalent. Refer to GI-22, "Recommended Chemical Products and Sealants".
Refer to GI-4, "
Components" for symbols not described on the above.
JSDIA1925GB
Revision: 2010 May2011 QX56

TRANSMISSION ASSEMBLYTM-205
< UNIT REMOVAL AND INSTALLATION > [7AT: RE7R01B]
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UNIT REMOVAL AND INSTALLATION
TRANSMISSION ASSEMBLY
2WD
2WD : Exploded ViewINFOID:0000000006233263
2WD : Removal and InstallationINFOID:0000000006233264
REMOVAL
CAUTION:
 When removing the A/T assembly from engine, fi rst remove the crankshaft position sensor (POS)
from the A/T assembly.
 Be careful not to damage sensor edge.
1. Shift the selector lever to “P” position, and release the parking brake.
2. Disconnect the battery cabl e from the negative terminal.
3. Support A/T assembly with a transmission jack. CAUTION:
When setting the transmission jack, be careful not to allow it to collide against the drain plug and
overflow plug.
4. Remove rear engine mounting cross member.
5. Remove engine mounting insulator (rear).
6. Remove control cable from A/T assembly. Refer to TM-178, "
Removal and Installation".
7. Disconnect heated oxygen sensor 2 connectors (bank 1 and bank 2). Refer to EX-5, "
Exploded View".
1. A/T assembly 2. Front suspension rear cross mem-
ber3. Rear engine mounting cross
member
4. Engine mounting insulator (rear)
A. Tightening must be done following the installation procedure. Refer to TM-205, "
2WD : Removal and Installation".
Refer to GI-4, "
Components" for symbols in the figure.
JSDIA1856GB
Revision: 2010 May2011 QX56

TM-208
< UNIT REMOVAL AND INSTALLATION >[7AT: RE7R01B]
TRANSMISSION ASSEMBLY
4WD : Exploded View
INFOID:0000000006226910
4WD : Removal and InstallationINFOID:0000000006226911
REMOVAL
CAUTION:
 When removing the A/T assembly from engine, fi rst remove the crankshaft position sensor (POS)
from the A/T assembly.
 Be careful not to damage sensor edge.
1. Shift the selector lever to “P” pos ition, and release the parking brake.
2. Disconnect the battery cable from the negative terminal.
3. Remove control cable from A/T assembly. Refer to TM-178, "
Removal and Installation".
4. Disconnect heated oxygen sensor 2 connectors (bank 1 and bank 2). Refer to EX-5, "
Exploded View".
5. Remove exhaust front tube (RH and LH) and main muffler. Refer to EX-5, "
Exploded View".
6. Support A/T assembly with a transmission jack. CAUTION:
When setting the transmission jack, be careful not to allow it to collide against the drain plug and
overflow plug.
7. Remove rear engine mounting cross member and engine mounting insulator (rear).
8. Separate propeller shaft assembly (front). Refer to DLN-129, "
Removal and Installation".
9. Separate propeller shaft assembly (rear). Refer to DLN-137, "
Removal and Installation".
10. Remove front under cover with a power tool. Refer to EXT-25, "
Removal and Installation".
11. Remove front suspension rear cross member.
1. A/T assembly 2. Front suspension rear cross mem- ber3. Rear engine mounting cross
member
4. Engine mounting insulator (rear)
A. Tightening must be done following the installation procedure. Refer to TM-208, "
4WD : Removal and Installation".
Refer to GI-4, "
Components" for symbols in the figure.
JPDIA1156GB
Revision: 2010 May2011 QX56

VTL-1
VENTILATION, HEATER & AIR CONDITIONER
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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

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