service INFINITI QX4 2005 Factory Owner's Guide

ON-VEHICLE SERVICE
AT-241
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Rear Oil SealECS00CKY
REMOVAL AND INSTALLATION
Removal
1. Remove rear propeller shaft. Refer to PR-5, "REMOVAL" .
2. Remove transfer from transmission (4WD models). Refer to TF-
143, "REMOVAL" .
3. Remove rear oil seal using a flat-bladed screwdriver or suitable
tool.
CAUTION:
Be careful not to scratch rear extension assembly (2WD
models) or adapter case assembly (4WD models).
Installation
CAUTION:
After completing installation, check for A/T fluid leakage and fluid level. Refer to MA-24, "
Changing A/
T Fluid" , MA-22, "Checking A/T Fluid" .
1. Install new rear oil seal into the extension case (2WD models) or
adapter case (4WD models) until it is flush with component face,
using Tool or suitable drift.
CAUTION:

Apply ATF to rear oil seal.

Do not reuse rear oil seal.
2. Install transfer to transmission (4WD models). Refer to TF-143,
"INSTALLATION" .
3. Install rear propeller shaft. Refer to PR-9, "
INSTALLATION"
SCIA5254E
SCIA5583E

AT-248
TRANSMISSION ASSEMBLY
Revision: October 20052005 QX56
8. Remove crankshaft position sensor (POS) from A/T assembly.
9. Disconnect A/T fluid cooler tube from A/T assembly.
10. Remove dust cover from converter housing part.
11. Secure drive plate using Tool then remove drive plate to torque
converter bolts.
CAUTION:
When turning crankshaft, turn it clockwise as viewed from
the front of the engine.
NOTE:
Tool must be removed and drive plate turned to access all drive
plate to torque converter bolts.
12. 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.
13. Remove cross member with power tool.
14. Tilt the transmission slightly to keep the clearance between body and transmission, and then disconnect
air breather hose from A/T fluid indicator pipe. Refer to AT-244, "
REMOVAL" .
15. Disconnect A/T assembly connector and transfer unit connector.
16. Remove A/T fluid indicator pipe.
17. Plug up openings such as the fluid charging pipe hole, etc.
18. Remove A/T assembly to engine bolts with power tool.
19. Remove A/T assembly with transfer from vehicle, using Tool.
CAUTION:

Secure torque converter to prevent it from dropping.

Secure A/T assembly to a transmission jack.
NOTE:
The actual special service tool may differ from tool shown.
20. Remove transfer from A/T assembly. Refer to TF-143,
"REMOVAL" .
INSPECTION
Installation and Inspection of Torque Converter

After inserting a torque converter to a transmission, be sure to
check dimension A to ensure it is within the reference value
limit.
LCIA0334E
Tool number : — (J-47245)
Tool number : — (J-47002)
LCIA0335E
SCIA2203E
Dimension A : 24.0 mm (0.94 in) or more
SAT0 1 7B

AT-276
DISASSEMBLY
Revision: October 20052005 QX56
58. Use a pin punch (4mm dia. commercial service tool) to knock
out retaining pin.
59. Remove manual shaft retaining pin with pliers.
60. Remove manual plate (with parking rod) from manual shaft.
61. Remove parking rod from manual plate.
62. Remove manual shaft from transmission case.
SCIA2328E
SCIA5218E
SCIA5219E
SCIA5220E
SCIA5716E

AT-298
ASSEMBLY
Revision: October 20052005 QX56
ASSEMBLYPFP:00000
Assembly (1)ECS00CLC
1. Use a drift [commercial service tool φ22 mm (0.87 in)] to drive
manual shaft oil seals into the transmission case until it is flush
as shown.
CAUTION:

Apply ATF to manual shaft oil seals.

Do not reuse manual shaft oil seals.
2. Install detent spring and spacer in transmission case. Tighten
bolt to the specified torque. Refer to AT-250, "
Components" .
3. Install manual shaft to transmission case.
4. Install parking rod to manual plate.
SCIA5256E
SCIA5248E
SCIA5716E
SCIA5220E

SERVICE DATA AND SPECIFICATIONS (SDS)
AT-321
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsECS00CLF
*1: Refer to MA-11, "Fluids and Lubricants" .
Vehicle Speed When Shifting GearsECS00CLG
NORMAL MODE

At half throttle, the accelerator opening is 4/8 of the full opening.
TOW MODE

At half throttle, the accelerator opening is 4/8 of the full opening. Applied model 4x2 4x4
Automatic transmission model RE5R05A
Transmission model code number 95X17 95X18
Stall torque ratio2.0: 1
Transmission gear ratio1st 3.827
2nd 2.368
3rd 1.520
4th 1.000
5th 0.834
Reverse 2.613
Recommended fluid NISSAN Matic Fluid J*1
Fluid capacity 10.6 liter (11-1/4 US qt, 9-3/8 Imp qt)
CAUTION:

Use only Genuine NISSAN ATF Matic Fluid J. Do not mix with other fluid.

Using automatic transmission fluid other than Genuine NISSAN an ATF Matic Fluid J will deteriorate in driveability and
automatic transmission durability, and may damage the automatic transmission, which is not covered by the warranty.
Final
gear
ratioThrottle positionVehicle speed km/h (MPH)
D
1 →D2D2 →D3D3 →D4D4 →D5D5 →D4D4 →D3D3 →D2D2 →D1
2.937Full throttle 70 - 74
(44 - 46)112 - 120
(70 - 75)176 - 186
(110 - 116)249 - 259
(155 - 161)245 - 255
(152 - 159)166 - 176
(103 - 110)100 - 108
(62 - 67)43 - 47
(27 - 30)
Half throttle 46 - 50
(28 - 31)74 - 82
(46 - 51)103 - 113
(64 - 70)135 - 145
(84 - 90)109 - 119
(68 - 74)69 - 79
(43 - 49)44 - 52
(27 - 32)11 - 1 5
(7 - 10)
3.357Full throttle 61 - 65
(38 - 41)97 - 105
(61 - 66)153 - 163
(95 - 102)236 - 246
(147 - 153)232 - 242
(144 - 151)143 - 153
(89 - 95)87 - 95
(54 - 59)43 - 47
(27 - 29)
Half throttle 41 - 45
(26 - 28)66 - 74
(41 - 46)89 - 99
(56 - 62)117 - 127
(73 - 79)95 - 105
(59 - 65)59 - 69
(37 - 43)38 - 46
(24 - 29)11 - 1 5
(7 - 10)
Final
gear
ratioThrottle positionVehicle speed km/h (MPH)
D
1 →D2D2 →D3D3 →D4D4 →D5D5 →D4D4 →D3D3 →D2D2 →D1
2.937Full throttle 70 - 74
(44 - 46)112 - 120
(70 - 75)176 - 186
(110 - 116)249 - 259
(155 - 161)245 - 255
(152 - 159)166 - 176
(103 - 110)100 - 108
(62 - 67)43 - 47
(27 - 30)
Half throttle 50 - 54
(31 - 34)81 - 89
(50 - 55)113 - 123
(70 - 76)135 - 145
(84 - 90)109 - 119
(68 - 74)68 - 78
(42 - 48)44 - 52
(27 - 32)11 - 1 5
(7 - 10)
3.357Full throttle 61 - 65
(38 - 41)97 - 105
(61 - 66)153 - 163
(95 - 102)236 - 246
(147 - 153)232 - 242
(144 - 151)143 - 153
(89 - 95)87 - 95
(54 - 59)43 - 47
(27 - 29)
Half throttle 43 - 47
(27 - 29)72 - 80
(45 - 50)98 - 108
(61 - 67)117 - 127
(73 - 79)95 - 105
(59 - 65)59 - 69
(37 - 43)37 - 45
(23 - 28)11 - 1 5
(7 - 10)

AT-322
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: October 20052005 QX56
Vehicle Speed When Performing and Releasing Complete Lock-upECS00CLH

At closed throttle, the accelerator opening is less than 1/8 condition.

At half throttle, the accelerator opening is 4/8 of the full opening.
Vehicle Speed When Performing and Releasing Slip Lock-upECS00CLI

At closed throttle, the accelerator opening is less than 1/8 condition.
Stall SpeedECS0 0CL J
Line PressureECS00CLK
A/T Fluid Temperature SensorECS00CLL
Turbine Revolution SensorECS0 0CL M
Vehicle Speed Sensor A/T (Revolution Sensor)ECS00CLN
Final
gear
ratioThrottle positionVehicle speed km/h (MPH)
Lock-up “ON” Lock-up “OFF”
2.937Closed throttle 74 - 82 (46 - 51) 71 - 79 (45 - 49)
Half throttle 188 - 196 (117 - 122) 136 - 144 (85 - 90)
3.357Closed throttle 65 - 73 (41 - 46) 62 - 70 (39 - 44)
Half throttle 168 - 176 (105 - 110) 118 - 126 (74 - 79)
Final
gear
ratioThrottle position Gear positionVehicle speed km/h (MPH)
Slip lock-up “ON” Slip lock-up “OFF”
2.937 Closed throttle4th 52 - 60 (33 - 38) 49 - 57 (31 - 36)
5th 52 - 60 (33 - 38) 49 - 57 (31 - 36)
3.357 Closed throttle4th 46 - 54 (29 - 34) 43 - 51 (27 - 32)
5th 46 - 54 (29 - 34) 43 - 51 (27 - 32)
Stall speed2,500 - 2,800 rpm
Engine speedLine pressure [kPa (kg/cm2 , psi)]
R position D position
At idle speed 392 - 441 (4.0 - 4.5, 57 - 64) 373 - 422 (3.8 - 4.3, 54 - 61)
At stall speed 1,700 - 1,890 (17.3 - 19.3, 247 - 274) 1,310 - 1,500 (13.3 - 15.3, 190 - 218)
Name Condition CONSULT-II “DATA MONITOR” (Approx.) (V) Resistance (Approx.) (kΩ)
A/T fluid temperature sensor 10°C (32°F) 2.2 15
20°C (68°F) 1.8 6.5
80°C (176°F) 0.6 0.9
A/T fluid temperature sensor 20°C (32°F) 2.2 10
20°C (68°F) 1.7 4
80°C (176°F) 0.45 0.5
Name Condition Data (Approx.)
Turbine revolution
sensor 1When running at 50 km/h (31 MPH) in 4th speed with the closed throttle position switch
“OFF”.
1.3 (kHz)
Turbine revolution
sensor 2When moving at 20 km/h (12 MPH) in 1st speed with the closed throttle position switch
“OFF”.
Name Condition Data (Approx.)
Revolution sensor When moving at 20 km/h (12 MPH). 185 (Hz)

SERVICE DATA AND SPECIFICATIONS (SDS)
AT-323
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Reverse brakeECS00CLO
*: Always check with the Parts Department for the latest parts information.
Total End PlayECS00CLP
BEARING RACE FOR ADJUSTING TOTAL END PLAY
*: Always check with the Parts Department for the latest parts information.Thickness of retaining platesThickness mm (in) Part number*
4.2 (0.165)
4.4 (0.173)
4.6 (0.181)
4.8 (0.189)
5.0 (0.197)
5.2 (0.205) 31667 90X14
31667 90X15
31667 90X16
31667 90X17
31667 90X18
31667 90X19
Total end play mm (in) 0.25 - 0.55 (0.0098 - 0.0217)
Thickness mm (in) Part number*
0.8 (0.031)
1.0 (0.039)
1.2 (0.047)
1.4 (0.055)
1.6 (0.063)
1.8 (0.071)31435 95X00
31435 95X01
31435 95X02
31435 95X03
31435 95X04
31435 95X05

AT-324
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: October 20052005 QX56

ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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SECTION AT C
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AT C
Revision: October 20052005 QX56 PRECAUTIONS .......................................................... 5
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 5
Precautions for Working with HFC-134a (R-134a) ..... 5
Contaminated Refrigerant ........................................ 5
General Refrigerant Precautions .............................. 6
Precautions for Leak Detection Dye ......................... 6
A/C Identification Label ............................................ 7
Precautions for Refrigerant Connection ................... 7
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION ...................................................... 7
O-RING AND REFRIGERANT CONNECTION ..... 8
Precautions for Servicing Compressor ....................11
Precautions for Service Equipment .........................11
RECOVERY/RECYCLING EQUIPMENT .............11
ELECTRONIC LEAK DETECTOR .......................11
VACUUM PUMP ................................................. 12
MANIFOLD GAUGE SET .................................... 12
SERVICE HOSES ............................................... 12
SERVICE COUPLERS ........................................ 13
REFRIGERANT WEIGHT SCALE ...................... 13
CHARGING CYLINDER ...................................... 13
Wiring Diagrams and Trouble Diagnosis ................ 13
PREPARATION ......................................................... 14
Special Service Tools ............................................. 14
HFC-134a (R-134a) Service Tools and Equipment ... 14
Commercial Service Tools ...................................... 17
REFRIGERATION SYSTEM ..................................... 18
Refrigerant Cycle ................................................... 18
REFRIGERANT FLOW ....................................... 18
Refrigerant System Protection ............................... 18
REFRIGERANT PRESSURE SENSOR ............. 18
PRESSURE RELIEF VALVE .............................. 19
Component Layout ................................................. 20
FRONT REFRIGERATION SYSTEM .................. 20
REAR REFRIGERATION SYSTEM .................... 21LUBRICANT .............................................................. 22
Maintenance of Lubricant Quantity in Compressor ... 22
LUBRICANT ........................................................ 22
CHECKING AND ADJUSTING ............................ 22
AIR CONDITIONER CONTROL ............................... 24
Description .............................................................. 24
Operation ................................................................ 24
AIR MIX DOORS CONTROL .............................. 24
BLOWER SPEED CONTROL ............................. 24
INTAKE DOOR CONTROL ................................. 24
MODE DOOR CONTROL ................................... 24
DEFROSTER DOOR CONTROL ........................ 24
MAGNET CLUTCH CONTROL ........................... 25
SELF-DIAGNOSTIC SYSTEM ............................ 25
Description of Control System ................................ 26
Control Operation ................................................... 26
DISPLAY SCREEN .............................................. 27
AUTO SWITCH ................................................... 27
TEMPERATURE CONTROL DIAL (TEMPERA-
TURE CONTROL) (DRIVER SIDE) ..................... 27
TEMPERATURE CONTROL DIAL (TEMPERA-
TURE CONTROL) (PASSENGER SIDE) ............ 27
TEMPERATURE CONTROL DIAL (TEMPERA-
TURE AND MODE CONTROL) (REAR) ............. 27
RECIRCULATION () SWITCH ............................. 27
DEFROSTER () SWITCH .................................... 27
REAR WINDOW DEFOGGER SWITCH ............. 27
OFF SWITCH ...................................................... 27
A/C SWITCH ....................................................... 27
MODE SWITCH (FRONT) ................................... 27
FRONT BLOWER CONTROL DIAL .................... 27
TEMPERATURE CONTROL DIAL (TEMPERA-
TURE AND MODE CONTROL) ........................... 28
REAR BLOWER CONTROL DIAL ...................... 28
Discharge Air Flow ................................................. 29
FRONT ................................................................ 29
REAR .................................................................. 29
System Description (Front) ..................................... 30
SWITCHES AND THEIR CONTROL FUNCTION ... 30
System Description (Rear) ..................................... 31

ATC-3
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Revision: October 20052005 QX56 DIAGNOSTIC PROCEDURE FOR AMBIENT
SENSOR ........................................................... 137
COMPONENT INSPECTION ............................ 139
In-vehicle Sensor Circuit ...................................... 140
COMPONENT DESCRIPTION ......................... 140
DIAGNOSTIC PROCEDURE FOR IN-VEHICLE
SENSOR ........................................................... 141
COMPONENT INSPECTION ............................ 143
Optical Sensor Circuit .......................................... 143
COMPONENT DESCRIPTION ......................... 143
OPTICAL INPUT PROCESS ............................ 143
DIAGNOSTIC PROCEDURE FOR OPTICAL
SENSOR ........................................................... 144
Intake Sensor Circuit ............................................ 145
COMPONENT DESCRIPTION ......................... 145
DIAGNOSTIC PROCEDURE FOR INTAKE SEN-
SOR .................................................................. 145
COMPONENT INSPECTION ............................ 146
CONTROL UNIT ..................................................... 147
Removal and Installation ...................................... 147
FRONT AIR CONTROL .................................... 147
REAR AIR CONTROL ....................................... 147
AMBIENT SENSOR ................................................ 148
Removal and Installation ...................................... 148
REMOVAL ......................................................... 148
INSTALLATION ................................................. 148
IN-VEHICLE SENSOR ............................................ 149
Removal and Installation ...................................... 149
REMOVAL ......................................................... 149
INSTALLATION ................................................. 149
OPTICAL SENSOR ................................................ 150
Removal and Installation ...................................... 150
INTAKE SENSOR ................................................... 151
Removal and Installation ...................................... 151
REMOVAL ......................................................... 151
INSTALLATION ................................................. 151
BLOWER MOTOR .................................................. 152
Components ......................................................... 152
Removal and Installation ...................................... 152
FRONT BLOWER MOTOR ............................... 152
REAR BLOWER MOTOR ................................. 153
IN-CABIN MICROFILTER ....................................... 154
Removal and Installation ...................................... 154
FUNCTION ........................................................ 154
REPLACEMENT TIMING .................................. 154
REPLACEMENT PROCEDURE ....................... 154
HEATER & COOLING UNIT ASSEMBLY .............. 156
Components ......................................................... 156
Removal and Installation ...................................... 157
FRONT HEATER AND COOLING UNIT ASSEM-
BLY .................................................................... 157
REAR HEATER AND COOLING UNIT ASSEM-
BLY .................................................................... 158
Removal and Installation for Rear Heater Core
Pipes .................................................................... 158
REMOVAL ......................................................... 158
INSTALLATION ................................................. 159
HEATER CORE ...................................................... 160Components .........................................................160
Removal and Installation ......................................161
FRONT HEATER CORE ...................................161
REAR HEATER CORE ......................................162
DEFROSTER DOOR MOTOR ................................163
Removal and Installation ......................................163
REMOVAL .........................................................163
INSTALLATION .................................................163
INTAKE DOOR MOTOR .........................................164
Removal and Installation ......................................164
REMOVAL .........................................................164
INSTALLATION .................................................164
MODE DOOR MOTOR ............................................165
Removal and Installation ......................................165
REMOVAL .........................................................165
INSTALLATION .................................................165
AIR MIX DOOR MOTOR .........................................166
Components .........................................................166
Removal and Installation ......................................166
FRONT AIR MIX DOOR MOTOR (DRIVER) .....166
FRONT AIR MIX DOOR MOTOR (PASSENGER) .167
REAR AIR MIX DOOR MOTOR ........................167
VARIABLE BLOWER CONTROL ...........................168
Removal and Installation ......................................168
REMOVAL .........................................................168
INSTALLATION .................................................168
REAR BLOWER MOTOR RESISTOR ....................169
Removal and Installation ......................................169
REMOVAL .........................................................169
INSTALLATION .................................................169
DUCTS AND GRILLES ...........................................170
Components .........................................................170
Removal and Installation ......................................173
CENTER CONSOLE HEAT DUCT AND REAR
FINISHER ASSEMBLY GRILLE ........................173
DEFROSTER NOZZLE .....................................173
RH AND LH SIDE DEMISTER DUCT ...............173
RH AND LH VENTILATOR DUCT .....................173
CENTER VENTILATOR DUCT .........................173
FLOOR DUCT ...................................................173
REAR OVERHEAD DUCTS ..............................173
REAR FLOOR DUCT ........................................174
GRILLES ...........................................................174
REFRIGERANT LINES ...........................................175
HFC-134a (R-134a) Service Procedure ...............175
SETTING OF SERVICE TOOLS AND EQUIP-
MENT ................................................................175
Components .........................................................177
Removal and Installation for Compressor ............179
REMOVAL .........................................................179
INSTALLATION .................................................180
Removal and Installation for Compressor Clutch . 180
REMOVAL .........................................................180
INSPECTION ....................................................181
INSTALLATION .................................................181
BREAK-IN OPERATION ....................................183
Removal and Installation for Low-pressure Flexible
Hose .....................................................................183
REMOVAL .........................................................183