2006 INFINITI QX56 weight

LASER BEAM AIMING ADJUSTMENTACS-13
[ICC]
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2. Adjust the height of the target stand so that the point of the trian-
gle aims above the center of the ICC sensor.
ADJUSTING THE POSITION OF THE TARGET BOARD STRING
1. Attach a scale or straightedge (at least 350 mm [14 in] or
longer).
2. Suspend a string with a weight on the end 218 mm (8.6 in) to the left side of the target board center.
POSITIONING THE TARGET
1. Suspend a string with weights on each end over the centerline of the vehicle. The string should lay overthe center of the front and back bumpers. Mark these centerpoints on the ground at each weight.
2. Connect the two center points using a string. Extend the string an additional 5 m (16 ft) beyond the front centerpoint and mark
the floor. Position the target board weight on this mark.
3. Relocate the suspended string from the left side of the target board to the center of the target board. Mark this point on the ground.
WKIA2039E
SKIA1211E
WKIA2040E
WKIA1851E

AT-8
PRECAUTIONS
Revision: November 20092006 QX56
Precautions ECS00CDL

Before connecting or disconnecting the A/T assembly har-
ness connector, turn ignition switch “OFF” and disconnect
negative battery cable. Because battery voltage is applied
to TCM even if ignition switch is turned “OFF”.

After performing each TROUBLE DIAGNOSIS, perform
“DTC (Diagnostic Trouble Code) CONFIRMATION PROCE-
DURE”.
If the repair is completed the DTC should not be displayed
in the “DTC CONFIRMATION PROCEDURE”.

Always use the specified brand of ATF. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS" .

Use paper rags not cloth rags during work.

After replacing the ATF, dispose of the waste oil using the methods prescribed by law, ordinance, etc.

Before proceeding with disassembly, thoroughly clean the outside of the transmission. It is important to
prevent the internal parts from becoming contaminated by dirt or other foreign matter.

Disassembly should be done in a clean work area.

Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere
with the operation of the transmission.

Place disassembled parts in order for easier and proper assembly.

All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.

Gaskets, seals and O-rings should be replaced any time the transmission is disassembled.

It is very important to perform functional tests whenever they are indicated.

The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent
springs and small parts from becoming scattered or lost.

Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.

Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings
and seals, or hold bearings and washers in place during assembly. Do not use grease.

Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.

Clean or replace ATF cooler if excessive foreign material is found in oil pan or clogging strainer. Refer to
AT- 1 4 , "
A/T Fluid Cooler Cleaning" .

After overhaul, refill the transmission with new ATF.

When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque
converter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer
to AT- 1 2 , "
Changing Automatic Transmission Fluid (ATF)" , AT- 1 2 , "Checking Automatic Transmission
Fluid (ATF)" .
SEF289H
SEF217U

A/T CONTROL SYSTEMAT-19
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Shift MechanismECS00CDV
The automatic transmission uses compact triple planetary gear systems to improve power-transmission effi-
ciency, simplify construction and reduce weight.
It also employs an optimum shift control and super wide gear ratios. They improve starting performance and
acceleration during medium and high-speed operation.
CONSTRUCTION
FUNCTION OF CLUTCH AND BRAKE
1. Front brake 2. Input clutch3. Direct clutch
4. High and low reverse clutch 5. Reverse brake6. Forward brake
7. Low coast brake 8. 1st one-way clutch9. Forward one-way clutch
10. 3rd one-way clutch 11. Front sun gear12. Input shaft
13. Mid internal gear 14. Front internal gear15. Rear carrier
16. Rear sun gear 17. Mid sun gear18. Front carrier
19. Mid carrier 20. Rear internal gear21. Output shaft
22. Parking gear 23. Parking pawl
PCIA0002J
Name of the PartAbbreviation Function
Front brake (1) FR/B Fastens the front sun gear (11).
Input clutch (2) I/CConnects the input shaft (12), the front internal gear (14) and the mid internal
gear (13).
Direct clutch (3) D/C Connects the rear carrier (15) and the rear sun gear (16).
High and low reverse clutch (4) HLR/C Connects the mid sun gear (17) and the rear sun gear (16).
Reverse brake (5) R/B Fastens the rear carrier (15).
Forward brake (6) Fwd/B Fastens the mid sun gear (17).
Low coast brake (7) LC/B Fastens the mid sun gear (17).
1st one-way clutch (8) 1st OWCAllows the rear sun gear (16) to turn freely forward relative to the mid sun gear
(17) but fastens it for reverse rotation.
Forward one-way clutch (9) Fwd OWCAllows the mid sun gear (17) to turn freely in the forward direction but fastens it
for reverse rotation.
3rd one-way clutch (10) 3rd OWCAllows the front sun gear (11) to turn freely in the forward direction but fastens
it for reverse rotation.

ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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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

PRECAUTIONSATC-13
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SERVICE COUPLERS
Never attempt to connect HFC-134a (R-134a) service couplers to a
CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers will
not properly connect to the CFC-12 (R-12) system. If an improper
connection is attempted, discharging and contamination may occur.
REFRIGERANT WEIGHT SCALE
Verify that no refrigerant other than HFC134a (R-134a) and specified
oils have been used with the scale. If the scale controls refrigerant
flow electronically, the hose fitting must be 1/2”-16 ACME.
CHARGING CYLINDER
Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder's top valve
when filling the cylinder with refrigerant. Also, the accuracy of the cylinder is generally less than that of an
electronic scale or of quality recycle/recharge equipment.
Shut-off valve rotationA/C service valve
Clockwise Open
Counterclockwise Close
RHA273D
RHA274D

ATC-16
PREPARATION
Revision: November 20092006 QX56
—
(J-39183-C)
Manifold gauge set (with hoses
and couplers) Identification:

The gauge face indicates R-134a.
Fitting size-Thread size

1/2”
-16 ACME
Service hoses:

High side hose
(J-39500-72B)

Low side hose
(J-39500-72R)

Utility hose
(J-39500-72Y) Hose color:

Low side hose: Blue with black stripe

High side hose: Red with black stripe

Utility hose: Yellow with black stripe
or green with black stripe
Hose fitting to gauge:

1/2”
-16 ACME
Service couplers

High side coupler
(J-39500-20A)

Low side coupler
(J-39500-24A) Hose fitting to service hose:

M14 x 1.5 fitting is optional or perma-
nently attached.
—
(J-39699)
Refrigerant weight scale For measuring of refrigerant
Fitting size-Thread size

1/2”
-16 ACME
—
(J-39649)
Vacuum pump
(Including the isolator valve) Capacity:

Air displacement: 4 CFM

Micron rating: 20 microns

Oil capacity: 482 g (17 oz)
Fitting size-Thread size

1/2”
-16 ACME
Tool number
(Kent-Moore No.)
Tool name
Description
RJIA0196E
S-NT201
S-NT202
S-NT200
S-NT203

REFRIGERANT LINESATC-171
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REFRIGERANT LINESPFP:92600
HFC-134a (R-134a) Service ProcedureEJS003YR
SETTING OF SERVICE TOOLS AND EQUIPMENT
Discharging Refrigerant
WARNING:
Avoid breathing A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Remove HFC-134a (R-134a) refrigerant from the A/C system using certified service equipment meeting
requirements of SAE J2210 HFC-134a (R-134a) recycling equipment or SAE J2201 HFC-134a (R-134a)
recovery equipment. If an accidental system discharge occurs, ventilate the work area before resum-
ing service. Additional health and safety information may be obtained from the refrigerant and oil man-
ufacturers.
Evacuating System and Charging Refrigerant
1. Shut-off valve2. A/C service valve 3. Recovery/recycling equipment
WJIA0579E
1. Shut-off valve 2. A/C service valve3. Recovery/recycling equipment
4. Refrigerant container (HFC-134a) 5. Weight scale (J-39650) 6. Evacuating vacuum pump (J-39699)
7. Manifold gauge set (J-39183)
WJIA0580E

HOODBL-13
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CLEARANCE AND SURFACE HEIGHT ADJUSTMENT
1. Remove the front grille. Refer to EI-17, "FRONT GRILLE" .
2. Remove the hood lock assembly and adjust the height by rotating the bumper rubber until the hood clear- ance of hood and fender becomes 1 mm (0.04 in) lower than fitting standard dimension.
3. Temporarily tighten the hood lock, and position it by engaging it with the hood striker. Check the lock and striker for looseness, and tighten the lock mounting bolt to the specified torque.
4. Adjust the clearance and surface height of hood and fender according to the fitting standard dimension by rotating right and left bumper rubbers.
CAUTION:
Adjust right/left gap between hood and each part to the following specification.
5. Install the front grille. Refer to EI-17, "
FRONT GRILLE" .
HOOD LOCK ADJUSTMENT
1. Remove the front grille. Refer to EI-17, "FRONT GRILLE" .
2. Move the hood lock to the left or right so that striker center is vertically aligned with hood lock center (when viewed from vehicle front).
3. Make sure the secondary latch is properly engaged with the sec- ondary striker with hood's own weight by dropping it from
approx. 200 mm (7.87 in) height or by pressing it lightly approx.
3 kg (29 N, 7lb).
CAUTION:
Do not drop the hood from 300 mm (11.81 in) height or
higher.
4. After adjusting hood lock, tighten the lock bolts.
5. Install the front grille. Refer to EI-17, "
FRONT GRILLE" .
Removal and Installation of Hood AssemblyEIS004Q8
1. Support the hood striker with proper material to prevent it from
falling.
WARNING:
Body injury may occur if no supporting rod is holding the
hood open when removing the damper stay.
2. Remove the hinge nuts from the hood to remove the hood assembly.
CAUTION:
Operate with two workers, because of its heavy weight.
Installation is in the reverse order of removal. Hood and headlamp (B–B) : Less than 2.0 mm
PIIA3806E
LIIA1443E