2011 INFINITI QX56 4WD

MWI-36
< ECU DIAGNOSIS INFORMATION >
COMBINATION METER
LIGHT INDIgnition switch
ONTail lamp indicator lamp ON On
Tail lamp indicator lamp OFF Off
OIL W/L Ignition switch
ONOil pressure warning lamp ON On
Oil pressure warning lamp OFF Off
MIL Ignition switch
ONMalfunction indicator lamp ON On
Malfunction indicator lamp OFF Off
GLOW IND Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
CRUISE IND Ignition switch
ONCRUISE indicator ON On
CRUISE indicator OFF Off
SET IND Ignition switch
ONSET indicator ON On
SET indicator OFF Off
CRUISE W/L Ignition switch
ONCRUISE warning lamp ON On
CRUISE warning lamp OFF Off
BA W/L Ignition switch
ONIBA OFF indicator lamp ON On
IBA OFF indicator lamp OFF Off
ATC/T-AMT W/L Ignition switch
ONA/T check warning lamp ON On
A/T check warning lamp OFF Off
ATF TEMP W/L Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
4WD W/L Ignition switch
ON4WD warning lamp ON On
4WD warning lamp OFF Off
FUEL W/L Ignition switch
ONDuring low fuel warning indication On
Other than the above Off
WASHER W/L Ignition switch
ONDuring low washer flui
d warning indication On
Other than the above Off
AIR PRES W/L Ignition switch
ONLow tire pressure
warning lamp ON On
Low tire pressure warning lamp OFF Off
KEY G/Y W/L Ignition switch
ONKEY warning lamp (Green/Yellow) ON On
KEY warning lamp (Green/Yellow) OFF Off
KEY KNOB W/L Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
AFS OFF IND Ignition switch
ONAFS OFF indicator lamp ON On
AFS OFF indicator lamp OFF Off
DDS W/L Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
LANE W/L
Ignition switch
ONLane departure warning lamp ON On
Lane departure warning lamp OFF Off
LDP IND Ignition switch
ONLDP ON indicator lamp ON On
LDP ON indicator lamp OFF Off
AT P W / L Ignition switch
ONATP warning lamp ON On
ATP warning lamp OFF Off
Monitor Item Condition Value/Status
Revision: 2010 May2011 QX56

MWI-38
< ECU DIAGNOSIS INFORMATION >
COMBINATION METER
SHIFT INDIgnition switch
ONDuring the indication of “P” by shift position
indicator
P
During the indication of “R” by shift position
indicator R
During the indication of “N” by shift position
indicator N
During the indication of “D” by shift position
indicator D
During the indication of “M1” by shift posi-
tion indicator M1
During the indication of “M2” by shift posi-
tion indicator M2
During the indication of “M3” by shift posi-
tion indicator M3
During the indication of “M4” by shift posi-
tion indicator M4
During the indication of “M5” by shift posi-
tion indicator M5
During the indication of “M6” by shift posi-
tion indicator M6
During the indication of “M7” by shift posi-
tion indicator M7
4WD IND Ignition switch
ON4WD shift switch in AUTO position AUTO
4WD shift switch in 4H position LOCK
4WD shift switch in 4L position LOCK/4Lo
BSW IND Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
BSW W/L Ignition switch
ONBSW warning lamp ON On
BSW warning lamp OFF Off
AT S MODE SW Ignition switch
ONSnow mode switch ON On
Snow mode switch OFF Off
M RANGE SW Ignition switch
ONSelector lever in manual mode position On
Other than the above Off
NM RANGE SW Ignition switch
ONSelector lever in manual mode position Off
Other than the above On
AT SFT UP SW Ignition switch
ONSelector lever in + position On
Other than the above Off
AT SFT DWN SW Ignition switch
ONSelector lever in – position On
Other than the above Off
PKB SW Ignition switch
ONParking brake switch ON On
Parking brake switch OFF Off
BUCKLE SW Ignition switch
ONDriver seat belt not fastened On
Driver seat belt fastened Off
BRAKE OIL SW Ignition switch
ONBrake fluid level switch ON On
Brake fluid level switch OFF Off
A/C AMP CONN Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
Monitor Item Condition Value/Status
Revision: 2010 May2011 QX56

MWI
COMBINATION METERMWI-43
< ECU DIAGNOSIS INFORMATION >
C
DE
F
G H
I
J
K L
M B A
O P
DTC IndexINFOID:0000000006221723
Warning lamp/indicator lamp ABS warning lamp
The lamp turns ON by suspending communication.
VDC warning lamp
Brake warning lamp
IBA OFF indicator lamp
4WD warning lamp
Malfunction indicator lamp
VDC OFF indicator lamp
CRUISE warning lamp
Low tire pressure warning lamp The lamp blinking caused by suspending communication.
High beam indicator lamp
The lamp turns OFF by suspending communication.
Turn signal indicator lamp
Tail lamp indicator lamp
A/T CHECK indicator lamp
Key warning lamp
AT P w a r n i n g l a m p
Lane departure warning lamp
LDP ON indicator lamp
CRUISE indicator lamp
Oil pressure warning lamp
SNOW mode indicator lamp
TOW mode indicator lamp
CK SUSP indicator lamp
BSW indicator lamp
Function Specifications
Display contents of CONSULT-III Diagnostic item is detected when... Refer to
CAN COMM CIRCUIT
[U1000] When combination meter is not transmitting or receiving CAN communication signal
for 2 seconds or more. MWI-59,
"Diagnosis
Procedure"
CONTROL UNIT (CAN)
[U1010]
When detecting error during the initial diagnosis of the CAN controller of combina-
tion meter. MWI-60, "Diagnosis
Procedure"
VEHICLE SPEED
[B2205]
The abnormal vehicle speed signal is input from the ABS actuator and electric unit
(control unit) for
2 seconds or more. MWI-61, "Diagnosis
Procedure"
ENGINE SPEED
[B2267]
If ECM continuously transmits abnormal engine speed signals for 2 seconds or
more. MWI-62, "Diagnosis
Procedure"
WATER TEMP
[B2268]
If ECM continuously transmits abnormal engine coolant temperature signals for 60
seconds or more. MWI-63, "Diagnosis
Procedure"
Revision: 2010 May2011 QX56

RSU-18
< UNIT REMOVAL AND INSTALLATION >
REAR SUSPENSION MEMBER
UNIT REMOVAL AND INSTALLATION
REAR SUSPENSION MEMBER
Exploded ViewINFOID:0000000006225676
Removal and InstallationINFOID:0000000006225677
REMOVAL
1. Reduce system pressure. (With HBMC) Refer to SCS-18, "Work Procedure".
CAUTION:
Inadvertent piping removal causes fluid to splatter.
2. Remove tires with power tool. Refer to WT-64, "
Removal and Installation".
3. Remove emergency tires.
4. Remove front tube and main muffler. Refer to EX-5, "
Removal and Installation".
5. Remove caliper assembly. Hang caliper assembly in a place where it will not interfere with work. Refer to BR-43, "
BRAKE CALIPER ASSEMBLY : Removal and Installation".
CAUTION:
Avoid depressing brake pedal wh ile brake caliper is removed.
6. Remove disc rotor. Refer to RAX-7, "
Removal and Installation".
7. Remove wheel sensor harness from rear suspension member. Refer to BRC-135, "
REAR WHEEL SEN-
SOR : Removal and Installation".
8. Remove height sensor from rear lower link (right side). Refer to EXL-136, "
Removal and Installation".
9. Remove vehicle height sensor from rear lower link (left side). Refer to SCS-98, "
Removal and Installa-
tion".
10. Remove parking brake cable mounting bolt and separa te parking brake cable from vehicle and rear sus-
pension member. Refer to PB-5, "
Removal and Installation".
11. Remove shock absorber mounting bolt (lower side).
12. Remove stabilizer bar. (Without HBMC). Refer to RSU-17, "
Removal and Installation".
13. Remove rear lower link and coil spring. Refer to RSU-8, "
Removal and Installation".
14. Remove drive shaft. Refer to RAX-11, "
Removal and Installation".
15. Remove propeller shaft. Refer to DLN-137, "
Removal and Installation" (2WD), DLN-144, "Removal and
Installation" (4WD).
1. Rear suspension member
Refer to GI-4, "
Components" for symbols in the figure.
JPEIB0218GB
Revision: 2010 May2011 QX56

TM-4
Component Inspection (Shift Lock Solenoid) ........159
SELECTOR LEVER POSITION INDICATOR ..161
Component Function Check ................................ ..161
Diagnosis Procedure .............................................161
Component Inspection (Selector Lever Position
Indicator) ................................................................
163
SYMPTOM DIAGNOSIS ............................165
SYSTEM SYMPTOM ...................................... .165
Symptom Table ................................................... ..165
PERIODIC MAINTENANCE ..................... ..175
A/T FLUID ....................................................... .175
Inspection ............................................................ ..175
REMOVAL AND INSTALLATION ..............176
A/T SHIFT SELECTOR ................................... .176
Exploded View ..................................................... ..176
Removal and Installation .......................................176
Inspection and Adjustment ....................................177
CONTROL CABLE ..........................................178
Exploded View ..................................................... ..178
Removal and Installation .......................................178
Inspection and Adjustment ....................................179
SELECTOR LEVER POSITION INDICATOR ..180
Removal and Installation ..................................... ..180
TOW MODE SWITCH ......................................181
Removal and Installation ..................................... ..181
CONTROL VALVE & TCM ..............................182
Exploded View ..................................................... ..182
Removal and Installation .......................................182
Inspection and Adjustment ....................................186
PARKING COMPONENTS ..............................187
2WD ........................................................................ ..187
2WD : Exploded View ............................................187
2WD : Removal and Installation ............................187
2WD : Inspection ...................................................190
REAR OIL SEAL ..............................................192
2WD ........................................................................ ..192
2WD : Exploded View ............................................192
2WD : Removal and Installation ............................192
2WD : Inspection ...................................................193
4WD ........................................................................ ..193
4WD : Exploded View ............................................193
4WD : Removal and Installation ............................193
4WD : Inspection and Adjustment .........................194
OUTPUT SPEED SENSOR .............................195
2WD ........................................................................ ..195
2WD : Exploded View ...........................................195
2WD : Removal and Installation ............................195
2WD : Inspection and Adjustment .........................198
AIR BREATHER HOSE ....................................199
2WD ........................................................................ .199
2WD : Exploded View ...........................................199
2WD : Removal and Installation ............................199
4WD ........................................................................ .200
4WD : Exploded View ...........................................200
4WD : Removal and Installation ............................200
FLUID COOLER SYSTEM ...............................202
Exploded View ..................................................... .202
Removal and Installation .......................................202
Inspection and Adjustment ....................................204
UNIT REMOVAL AND INSTALLATION ...205
TRANSMISSION ASSEMBLY ..........................205
2WD ........................................................................ .205
2WD : Exploded View ...........................................205
2WD : Removal and Installation ............................205
2WD : Inspection and Adjustment .........................207
4WD ........................................................................ .207
4WD : Exploded View ...........................................208
4WD : Removal and Installation ............................208
4WD : Inspection and Adjustment .........................210
UNIT DISASSEMBLY AND ASSEMBLY ..211
TRANSMISSION ASSEMBLY ..........................211
Exploded View ..................................................... .211
Oil Channel ...........................................................222
Location of Needle Bearings and Bearing Races .222
Location of Snap Rings .........................................225
Disassembly ..........................................................226
Assembly ..............................................................243
Inspection ..............................................................267
OIL PUMP, 2346 BRAKE, FRONT BRAKE
PISTON .............................................................
270
Exploded View ..................................................... .270
Disassembly ..........................................................270
Assembly ..............................................................274
Inspection and Adjustment ....................................277
UNDER DRIVE CARRIER, FRONT BRAKE
HUB ..................................................................
279
Exploded View ..................................................... .279
Disassembly ..........................................................279
Assembly ..............................................................280
Inspection ..............................................................280
FRONT CARRIER, INPUT CLUTCH, REAR
INTERNAL GEAR .............................................
282
Exploded View ..................................................... .282
Disassembly ..........................................................283
Revision: 2010 May2011 QX56

PREPARATIONTM-9
< PREPARATION > [7AT: RE7R01B]
C
EF
G H
I
J
K L
M A
B
TM
N
O P
Commercial Service ToolINFOID:0000000006226737
*: Always check with the Parts Department for the latest parts information. Tool name
Description
Power tool Loosening bolts and nuts
Drift
a: 22 mm (0.87 in) dia. Installing manual shaft oil seals
Drift
a: 64 mm (2.52 in) dia. Installing rear oil seal (4WD)
Pin punch
a: 4 mm (0.16 in) dia. Remove retaining pin
1. 315268E000* O-ring
2. 310811EA5A*
Charging pipe A/T fluid changing and adjustment
PBIC0190E
NT083
SCIA5338E
NT410
JSDIA1332ZZ
Revision: 2010 May2011 QX56

TM-10
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
A/T CONTROL SYSTEM
A/T CONTROL SYSTEM : Co
mponent Parts LocationINFOID:0000000006226738
1. Yaw rate/side/decel G sensor
Refer to BRC-10, "
Component Parts
Location". 2.
Tow mode switch
*13. IPDM E/R
Refer to PCS-4, "
Component Parts
Location".
4. ECM Refer to EC-16, "
Component Parts
Location". 5. ABS actuator and electric unit (con-
trol unit)
Refer to BRC-10, "Component Parts
Location". 6. Accelerator pedal position sensor
Refer to EC-16, "
Component Parts
Location".
7. Stop lamp switch Refer to BRC-10, "
Component Parts
Location". 8. BCM
Refer to BCS-4, "
BODY CONTROL
SYSTEM : Component Parts Loca-
tion". 9. Combination meter
Refer to MWI-6, "
METER SYSTEM :
Component Parts Location".
10. Shift position indicator (In the information display in the
combination meter) 11. A/T CHECK indicator lamp
(On the combination meter) 12. Tow mode indicator lamp
13. Selector lever position indicator 14. Manual mode switch 15. A/T assembly connector
16. Output speed sensor
*217.Control valve & TCM*3
A. Center console B. A/T shift selector assembly C. A/T assembly
*1 : Tow mode switch is integrated in to SNOW MODE/TOW MODE/VDC OFF switch assembly (2WD models) or 4WD switch
assembly (4WD models).
*2 : Output speed sensor is installed in A/T assembly.
*3 : Control valve & TCM is installed in A/T assembly.
JSDIA1773GB
Revision: 2010 May2011 QX56

TM-14
< SYSTEM DESCRIPTION >[7AT: RE7R01B]
COMPONENT PARTS
A/T CONTROL SYSTEM : Tow Mode Switch
INFOID:0000000006226756
 Tow mode switch is integrated in to
 Tow mode switch is integrated in to SNOW MODE /TOW MODE/VDC OFF switch assembly (2WD models)
or 4WD switch assembly (4WD models).
 When tow mode switch is pressed while tow mode indicator lamp on combination meter is OFF, the tow mode turns ON and tow mode indicator lamp turns ON.
 When tow mode switch is pressed while tow mode indicator lamp on combination meter is ON, the tow mode
turns OFF and tow mode indicator lamp turns OFF.
A/T CONTROL SYSTEM : A/ T CHECK Indicator LampINFOID:0000000006226757
A/T CHECK INDICATOR LAMP
Turns ON when ignition switch turns ON and turns OFF when the system is normal, for bulb check purposes.
A/T CONTROL SYSTEM : Tow Mode Indicator LampINFOID:0000000006226758
TOW MODE INDICATOR LAMP
Turns ON when tow mode is switched to operational status (ON) by tow mode switch.
A/T CONTROL SYSTEM : Selector Lever Position IndicatorINFOID:0000000006226759
Indicates selector lever position.
A/T SHIFT LOCK SYSTEM
Condition (status) A/T CHECK indicator lamp
Ignition switch OFF OFF
For approx. 2 seconds after the ignition switch is turned ON ON
Approx. 2 seconds after ignition switch is turned ON OFF
A/T is malfunctioning OFF
Condition (status) Tow mode indicator lamp
Ignition switch OFF OFF
When ignition switch turns ON OFF
Press tow mode switch while tow mode indicator lamp is OFF. ON
Press tow mode switch while tow mode indicator lamp is ON. OFF
Revision: 2010 May2011 QX56