check oil INFINITI QX56 2006 Factory Owner's Guide

AT-228
ON-VEHICLE SERVICE
Revision: November 20092006 QX56
ON-VEHICLE SERVICEPFP:00000
Oil PanECS00EPZ
REMOVAL AND INSTALLATION
Removal
1. Drain A/T fluid. Refer to AT- 1 2 , "Changing Automatic Transmission Fluid (ATF)" .
2. Remove oil pan and gasket.
3. Check foreign materials in oil pan to help determine cause of malfunction. If the A/T fluid is very dark, has some burned smell, or contains foreign particles, friction material (clutches, band) may need replacement.
A tacky film that will not wipe clean indicates varnish build up. Varnish can cause valves, servo, and
clutches to stick and can inhibit pump pressure.
CAUTION:
If friction material is detected, flush the transmission cooler after repair. Refer to AT- 1 4 , "
A/T Fluid
Cooler Cleaning" .
4. Remove magnets from oil pan.
Installation
1. Install the oil pan magnets as shown.
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ON-VEHICLE SERVICEAT-237
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13. Connect revolution sensor connector.
14. Securely fasten revolution sensor harness with terminal clips.
15. Install oil pan to transmission case. Refer to AT- 2 2 8 , "
Installation" .
16. Pull up A/T assembly harness connector. CAUTION:
Be careful not to damage connector.
17. Install snap ring to A/T assembly harness connector.
18. Connect A/T assembly harness connector.
19. Pour ATF into transmission assembly. Refer to AT- 1 2 , "
Chang-
ing Automatic Transmission Fluid (ATF)" .
20. Connect the negative battery terminal
CAUTION:
After completing installation, check A/T fluid leakage and fluid
level. Refer to AT- 1 2 , "
Changing Automatic Transmission Fluid
(ATF)" , AT- 1 2 , "Checking Automatic Transmission Fluid (ATF)"
.
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ON-VEHICLE SERVICEAT-239
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Installation
1. Install A/T fluid temperature sensor 2 to bracket.
2. Install A/T fluid temperature sensor 2 (with bracket) in control
valve with TCM. Tighten A/T fluid temperature sensor 2 bolt to
the specified torque. Refer to AT- 2 5 0 , "
Components" .
CAUTION:
Adjust bolt hole of bracket to bolt hole of control valve with
TCM.
3. Connect A/T fluid temperature sensor 2 connector.
4. Securely fasten A/T temperature sensor 2 harness with terminal clip.
5. Install oil pan to transmission case. Refer to AT- 2 2 8 , "
Installation" .
6. Connect the negative battery terminal
CAUTION:
After completing installation, check for A/T fluid leakage and fluid level. Refer to AT- 1 2 , "
Changing
Automatic Transmission Fluid (ATF)" , AT- 1 2 , "Checking Automatic Transmission Fluid (ATF)" .
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AT-240
ON-VEHICLE SERVICE
Revision: November 20092006 QX56
Rear Oil SealECS00EQ1
REMOVAL AND INSTALLATION
Removal
1. Remove rear propeller shaft. Refer to PR-9, "REMOVAL" .
2. Remove transfer from transmission (4WD models). Refer to TF-
145, "REMOVAL" .
3. Remove rear oil seal using suitable tool. CAUTION:
Be careful not to scratch rear extension assembly (2WD
models) or adapter case assembly (4WD models).
Installation
1. Install new rear oil seal until it is flush with component face intothe extension case (2WD models) using Tool, or adapter case
(4WD models) using suitable tool.
CAUTION:

Apply ATF to rear oil seal.

Do not reuse rear oil seal.
2. Install transfer to transmission (4WD models). Refer to TF-145,
"INSTALLATION" .
3. Install rear propeller shaft. Refer to PR-9, "
INSTALLATION" .
CAUTION:
After completing installation, check for A/T fluid leakage and
fluid level. Refer to AT- 1 2 , "
Changing Automatic Transmission
Fluid (ATF)" and AT- 1 2 , "Checking Automatic Transmission
Fluid (ATF)" .
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Tool number : ST33400001 (J-26082)
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TRANSMISSION ASSEMBLYAT-245
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INSTALLATION
Installation of the remaining components is in the reverse order of the removal, while paying attention to the
following:

When installing transmission to the engine, attach the bolts as shown.
NOTE:
*: No.2 bolt also secures air breather vent.
CAUTION:

When replacing an engine or transmission you must
make sure the dowels are installed correctly during re-
assembly.

Improper alignment caused by missing dowels may
cause vibration, oil leaks or breakage of drivetrain com-
ponents.

Align the positions of bolts for drive plate with those of the torque
converter, and temporarily tighten the bolts. Then tighten the
bolts with the specified torque.
CAUTION:

When turning crankshaft, turn it clockwise as viewed from
the front of the engine.

After converter is installed to drive plate, rotate crankshaft
several turns and check to be sure that transmission
rotates freely without binding.

Install crankshaft position sensor (POS).

After completing installation check fluid leakage, fluid level and
the positions of A/T. Refer to AT- 1 2 , "
Checking Automatic Transmission Fluid (ATF)" , AT- 2 2 7 , "Checking
of A/T Position" and AT- 2 2 7 , "Adjustment of A/T Position" .
Transmission to engine bolts : 113 N·m (12 kg-m,
83 ft-lb)
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INSTALLATION
Installation of the remaining components is in the reverse order of removal, while paying attention to the fol-
lowing:

When installing transmission to the engine, attach the bolts as shown.
NOTE:
*: No.2 bolt also secures air breather vent.
CAUTION:

When replacing an engine or transmission you must
make sure the dowels are installed correctly during re-
assembly.

Improper alignment caused by missing dowels may
cause vibration, oil leaks or breakage of drivetrain com-
ponents.

Align the positions of bolts for drive plate with those of the torque
converter, and temporarily tighten the bolts. Then tighten the
bolts with the specified torque.
CAUTION:

When turning crankshaft, turn it clockwise as viewed from
the front of the engine.

After converter is installed to drive plate, rotate crankshaft
several turns and check to be sure that transmission
rotates freely without binding.

Install crankshaft position sensor (POS).

After completing installation, check fluid leakage, fluid level, and
the positions of A/T. Refer to AT- 1 2 , "
Checking Automatic Transmission Fluid (ATF)" , AT- 2 2 7 , "Checking
of A/T Position" and AT- 2 2 7 , "Adjustment of A/T Position" .
Transmission to engine bolts : 113 N·m (12 kg-m,
83 ft-lb)
LCIA0371E
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REPAIR FOR COMPONENT PARTSAT-285
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2. Remove 3rd one-way clutch from front sun gear.
INSPECTION
3rd One-way Clutch

Check frictional surface for wear or damage.
CAUTION:
If necessary, replace the 3rd one-way clutch.
Front Sun Gear Snap Ring

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the snap ring.
Front Sun Gear

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the front sun gear.
ASSEMBLY
1. Install 3rd one-way clutch in front sun gear.
CAUTION:
Apply ATF to 3rd one-way clutch.
2. Install snap ring in front sun gear using suitable tool.
3. Check operation of 3rd one-way clutch.
a. Hold oil pump assembly and turn front sun gear.
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AT-322
ASSEMBLY
Revision: November 20092006 QX56
b. Install torque converter while aligning notches of torque con-
verter with notches of oil pump.
CAUTION:
Install torque converter while rotating it.
c. Measure distance “A” to check that torque converter is in proper position.
SCIA5010E
Distance “A” : 24.0 mm (0.94 in) or more
SAT017B

ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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Revision: November 2009 2006 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 ....................................... ..... 6
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
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 ................. ... 21
OIL ......................................................................... ... 22
Maintenance of Oil Quantity in Compressor ....... ... 22
OIL ................................................................... ... 22
CHECKING AND ADJUSTING ........................ ... 22AIR CONDITIONER CONTROL ............................
... 25
Description ........................................................... ... 25
Operation ............................................................. ... 25
AIR MIX DOORS CONTROL ........................... ... 25
BLOWER SPEED CONTROL .......................... ... 25
INTAKE DOOR CONTROL .............................. ... 25
MODE DOOR CONTROL ................................ ... 25
DEFROSTER DOOR CONTROL ..................... ... 25
MAGNET CLUTCH CONTROL ........................ ... 26
SELF-DIAGNOSTIC SYSTEM ......................... ... 26
Description of Control System ............................. ... 27
Control Operation ................................................... 27 DISPLAY SCREEN .............................................. 28
AUTO SWITCH ................................................ ... 28
TEMPERATURE CONTROL DIAL (TEMPERA-
TURE CONTROL) (DRIVER SIDE) .................. ... 28
TEMPERATURE CONTROL DIAL (TEMPERA-
TURE CONTROL) (PASSENGER SIDE) ......... ... 28
TEMPERATURE CONTROL DIAL (TEMPERA-
TURE AND MODE CONTROL) (REAR) .......... ... 28
RECIRCULATION () SWITCH .......................... ... 28
DEFROSTER () SWITCH ................................. ... 28
REAR WINDOW DEFOGGER SWITCH .......... ... 28
OFF SWITCH ................................................... ... 28
A/C SWITCH .................................................... ... 28
MODE SWITCH (FRONT) ................................ ... 28
FRONT BLOWER CONTROL DIAL ................. ... 28
TEMPERATURE CONTROL DIAL (TEMPERA-
TURE AND MODE CONTROL) ........................ ... 29
REAR BLOWER CONTROL DIAL ................... ... 29
Discharge Air Flow ................................................. 30 FRONT ............................................................. ... 30
REAR ............................................................... ... 30
System Description (Front) .................................. ... 31
SWITCHES AND THEIR CONTROL FUNCTION ... 31
System Description (Rear) .................................. ... 32
SWITCHES AND THEIR CONTROL FUNCTION ... 32
CAN Communication System Description ........... ... 33
TROUBLE DIAGNOSIS ......................................... ... 34
CONSULT-II Function (HVAC) ............................. ... 34

ATC-4Revision: November 20092006 QX56
Removal and Installation for Low-pressure Pipe .
.180
REMOVAL ........................................................ .180
INSTALLATION ................................................. .180
Removal and Installation for Rear High- and Low-
pressure A/C and Heater Core Pipes .................. .180
REMOVAL ........................................................ .180
INSTALLATION ................................................. .181
Removal and Installation for Underfloor Rear High-
and Low-pressure A/C and Heater Core Pipes ... .181
REMOVAL ........................................................ .181
INSTALLATION ................................................. .182
Removal and Installation for Refrigerant Pressure
Sensor ................................................................. .182
REMOVAL ........................................................ .182
INSTALLATION ................................................. .182
Removal and Installation for Condenser .............. .182
REMOVAL ........................................................ .182
INSTALLATION ................................................. .183
Removal and Installation for Front Evaporator .... .184
REMOVAL ........................................................ .184
INSTALLATION ................................................. .185
Removal and Installation for Rear Evaporator ..... .185
REMOVAL ........................................................ .186INSTALLATION .................................................
.186
Removal and Installation for Front Expansion Valve .186
REMOVAL ......................................................... .186
INSTALLATION ................................................. .186
Removal and Installation for Rear Expansion Valve .186
REMOVAL ......................................................... .186
INSTALLATION ................................................. .187
Checking for Refrigerant Leaks ........................... .187
PRELIMINARY CHECK .................................... .187
Checking System for Leaks Using the Fluorescent
Dye Leak Detector ............................................... .187
Dye Injection ........................................................ .187
Electronic Refrigerant Leak Detector ................... .188
PRECAUTIONS FOR HANDLING LEAK
DETECTOR ...................................................... .188
CHECKING PROCEDURE ............................... .189
SERVICE DATA AND SPECIFICATIONS (SDS) ... .191
Service Data and Specifications (SDS) ............... .191
COMPRESSOR ................................................ .191
OIL .................................................................... .191
REFRIGERANT ................................................ .191
ENGINE IDLING SPEED .................................. .191
BELT TENSION ................................................ .191