charging INFINITI QX56 2009 Factory Repair Manual

A/T FLUIDTM-181
< ON-VEHICLE MAINTENANCE >
CEF
G H
I
J
K L
M A
B
TM
N
O P
Changing the A/T Fluid (ATF)INFOID:0000000005892327
CAUTION:
If using the vehicle for towing, the A/T fl uid must be replaced as specified. Refer to MA-8, "Introduc-
tion of Periodic Maintenance".
1. Drive the vehicle to warm up the A/T fluid to approximately 80 ° C (176 ° F).
2. Stop the engine.
3. Remove the A/T fluid level gauge.
4. Drain the A/T fluid from the drai n plug hole, then install the drain
plug with a new gasket. Refill the transmission with new A/T
fluid. Always refill with the same volume as the drained A/T fluid.
Use the A/T fluid level gauge to check the A/T fluid level as
shown. Add A/T fluid as necessary.
 To flush out the old A/T fluid from the transmission o il coolers, pour new A/T fluid into the A/T fluid charg-
ing pipe with the engine idling and at the same time drain the old A/T fluid from the auxiliary transmis-
sion oil cooler hose return line.
 When the color of the A/T fluid coming out of the aux iliary transmission oil cooler hose return line is
about the same as the color of the new A/T fluid, flushing out the old A/T fluid is complete. The amount
of new A/T fluid used for flushing should be 30% to 50% increase of the specified capacity.
CAUTION:
 If Genuine NISSAN Matic S ATF is not available, Genuine NISSAN Matic J ATF may also be used.
 Using ATF fluid other than Genuine NISSAN Matic S ATF or Matic J ATF will cause deterioration
in driveability and A/T durability, and may damage the A/T, which is not covered by the warranty.
 When filling the transmission with A/T fluid, do not spill the A/T fluid on any heat generating
parts such as the exhaust parts.
 Do not reuse the drain plug gasket.
5. Install the A/T fluid level gauge and tighten t he A/T fluid level gauge bolt to specification.
6. Drive the vehicle to warm up the A/T fluid to approximately 80 ° C (176 ° F).
7. Check the fluid level and condition. If the A/T fluid is still dirty, repeat steps 2 through 6.
8. Install the A/T fluid level gauge in the A/T fluid charging pipe and install the A/T fluid level gauge bolt.
9. Tighten the A/T fluid level gauge bolt to specification. Drain plug : Refer to
TM-201, "Oil Pan"
.
LLIA0071E
A/T fluid grade and capacity : Refer to MA-12, "Fluids and Lubricants".
A/T fluid level
gauge bolt : Refer to
TM-214, "Removal and Installation (2WD)"
or TM-216, "Removal and
Installation (4WD)".
LLIA0071E
Revision: December 20092009 QX56

TM-218
< REMOVAL AND INSTALLATION >
TRANSMISSION ASSEMBLY
8. Remove crankshaft position sensor (POS) from A/T assembly.CAUTION:
 Do not subject it to impact by dropping or hitting it.
 Do not disassemble.
 Do not allow metal filings or fo reign material to get on the
sensor front edge magnetic area.
 Do not place in an area affected by magnetism.
9. Remove A/T fluid cooler tubes from A/T assembly.
10. Remove dust cover from converter housing.
11. Turn crankshaft, and remove the four bolts for drive plate and torque converter.
CAUTION:
When turning crankshaft, turn it clockwise as viewed from
the front of the engine.
12. Support A/T assembly using transmission jack and Tool. CAUTION:
When setting the transmission jack, be careful not to allow it to collide against the drain plug.
NOTE:
The actual special service tool may differ from tool shown.
13. Remove cross members using power tool.
14. Tilt the transmission slightly to keep the cl earance between body and transmission, then disconnect air
breather hose from A/T fluid indicator pipe. Refer to TM-197, "4WD : Removal and Installation"
.
15. Disconnect the following.  Neutral 4 low switch
 Wait detection switch
 Transfer motor connector
 A/T assembly connector
 Transfer control device connector
 ATP switch connector
 Transfer terminal cord assembly connector
16. Remove air breather hose assembly. Refer to TM-197, "4WD : Removal and Installation"
.
17. Remove A/T fluid indicator pipe.
18. Plug any openings such as the fluid charging pipe hole.
19. Remove A/T assembly to engine bolts using power tool.
20. Remove A/T assembly with transfer from vehicle. CAUTION:
 Secure torque converter to prevent it from dropping.
 Secure A/T assembly to transmission jack.
21. Remove transfer from A/T assembly. Refer to DLN-141,
"Removal and Installation".
LCIA0334E
LCIA0335E
Tool number : — (J-47002)
SCIA2203E
Revision: December 20092009 QX56

HEATER & COOLING UNIT ASSEMBLYVTL-17
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
Removal
1. Move the two front seats to the rear most position on the seat track.
2. Disconnect the battery negative terminal and battery positive terminal.
3. Discharge the refrigerant from the A/C system. Refer to
HA-20, "
HFC-134a (R-134a) Service Procedure".
4. Drain the coolant from the engine cooling system. Refer to CO-11, "
Changing Engine Coolant".
5. Disconnect the front heater hoses from the front heater core.
6. Disconnect the high/low pressure pipes from the front expansion valve.
7. Remove the instrument panel and console panel. Refer to IP-13, "
Removal and Installation".
8. Disconnect the instrument panel wire harness at t he RH and LH in-line connector brackets, and the fuse
block (J/B) electrical connectors. Refer to PG-9, "
Wiring Diagram — Battery Power Supply —".
9. Disconnect the steering member from each side of the vehicle body.
10. Remove the front heater and cooling unit assembly with it attached to the steering member, from the vehi- cle.
CAUTION:
Use care not to damage the seats and interior trim panels when removing the front heater and
cooling unit assembly with it at tached to the steering member.
11. Remove the front heater and cooling uni t assembly from the steering member.
Installation
Installation is in the reverse order of removal.
CAUTION:
• Replace the O-ring of the low-pressure pipe and high-pressure pipe with a new one, and apply com-
pressor oil to it when installing it.
• After charging the refrigerant, check for leaks.
NOTE:
• Fill the engine cooling system with the specified coolant mixture. Refer to CO-11, "
Changing Engine Cool-
ant".
• Recharge the A/C system. Refer to HA-20, "
HFC-134a (R-134a) Service Procedure".
REAR HEATER AND COOLING UNIT ASSEMBLY
Removal
1. Discharge the refrigerant from the A/C system. Refer to HA-20, "HFC-134a (R-134a) Service Procedure".
2. Drain the coolant from the engine cooling system. Refer to CO-11, "
Changing Engine Coolant".
3. Remove the luggage side finisher lower and upper RH. Refer to INT-19, "
Removal and Installation".
4. Disconnect the rear heater core hoses from the rear heater core.
5. Disconnect the rear A/C pipes from the rear expansion valve.
6. Disconnect the following electrical connectors: • Rear blower motor
• Rear variable blower control
• Rear air mix door motor
• Rear mode door motor
7. Disconnect the ducts and drain tube from the rear heater and cooling unit assembly.
8. Remove the rear heater and cooling unit assembly.
Installation
Installation is in the reverse order of removal.
CAUTION:
• Replace the O-ring of the low-pressure pipe and high-pressure pipe with a new one, and apply com- pressor oil to it when installing it.
• After charging the refrigerant, check for leaks.
NOTE:
• Fill the engine cooling system with the specified coolant mixture. Refer to CO-11, "
Changing Engine Cool-
ant".
• Recharge the A/C system. Refer to HA-20, "
HFC-134a (R-134a) Service Procedure".
Revision: December 20092009 QX56

VTL-36
< ON-VEHICLE REPAIR >
REFRIGERANT LINES
2. Remove the defroster mode door arm.
3. Separate the heater core and cooling unit case.
4. Remove the evaporator.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Replace the O-rings on the A/C refrigerant pipes with new ones, then apply compressor oil to them
when installing them.
• After charging the refrigerant, check for leaks.
Removal and Installation for Rear EvaporatorINFOID:0000000003775283
Rear Heater and Cooling Unit Assembly
AWIIA0087ZZ
1. Front cover 2. Evaporator and heater core case 3. Evaporator
4. Side cover 5. Heater core6. Blower motor
7. Blower motor case 8. Variable blower control
Front
Revision: December 20092009 QX56

REFRIGERANT LINESVTL-37
< ON-VEHICLE REPAIR >
C
DE
F
G H
J
K L
M A
B
VTL
N
O P
REMOVAL
1. Remove the rear heater and cooling unit assembly from the vehicle. Refer to VTL-16, "Removal and
Installation".
2. Remove the blower motor.
3. Remove the variable blower control.
4. Remove the air mix door motor.
5. Remove the mode door motor.
6. Remove the rear duct and mode door assembly. Refer to VTL-33, "
Removal and Installation".
7. Disassemble the rear heater and cooling unit assembly to remove the evaporator.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Replace the O-rings on the rear A/C pipes with new ones. Apply compressor oil to the O-rings when installing them.
• After charging the refrigerant, check for leaks.
Removal and Installation for Rear Expansion ValveINFOID:0000000003775284
REMOVAL
1. Discharge the refrigerant. Refer to HA-20, "HFC-134a (R-134a) Service Procedure".
2. Remove the luggage side finisher lower (RH). Refer to INT-19, "
Removal and Installation".
3. Disconnect the A/C refrigerant pi pes from the expansion valve.
CAUTION:
Cap or wrap the A/C refrigerant pipe ends with a suitable material such as vinyl tape to avoid the
entry of air and contaminants.
4. Remove the expansion valve.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Replace the O-rings on the A/C refrigerant pipes with new ones, th en apply compressor oil to them
when installing them.
• After charging the refrigerant, check for leaks. Expansion valve bolts : 4 N·m (0.41 kg-m, 35 in-lb)
A/C refrigerant pipe to expansion valve bolt : Refer to HA-29, "
Component".
Revision: December 20092009 QX56