2008 INFINITI FX35 service

PRECAUTIONSATC-3
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SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001612929
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SUPPLEMENTAL RESTRAINT SYS-
TEM” and “SEAT BELTS” of this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SUPPLEMEN TAL RESTRAINT SYSTEM”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
Precaution Necessary for Steering Wh eel Rotation After Battery Disconnect
INFOID:0000000001612931
NOTE:
 This Procedure is applied only to models with Intell igent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
 Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-III.
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ATC-4
< SERVICE INFORMATION >
PRECAUTIONS
Precaution for Procedure without Cowl Top Cover
INFOID:0000000001612932
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precaution for Working with HFC-134a (R-134a)INFOID:0000000001328153
CAUTION:
 CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refr igerant are not compatible. If the refrigerants
are mixed and compressor malfunct ion is likely to occur, refer to “CONTAMINATED REFRIGERANT”
below. To determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use Refriger-
ant Recovery/Recycling Rech arging equipment and Refrigerant Identifier.
 Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) compo-
nents. If lubricant other than that specified is used, compressor malfunction is likely to occur.
 The specified HFC-134a (R-134a) lu bricant rapidly absorbs moisture from the atmosphere. The fol-
lowing handling precauti ons must be observed:
- When removing refrigerant components from a vehicle, immediately cap (seal) the component to
minimize the entry of moisture from the atmosphere.
- When installing refrigerant components to a vehic le, never remove the caps (unseal) until just before
connecting the components. Connect all refriger ant loop components as quickly as possible to min-
imize the entry of moisture into system.
- Only use the specified lubricant fr om a sealed container. Immediately reseal containers of lubricant.
Without proper sealing, lubrican t will become moisture saturated and should not be used.
- Never allow lubricant (Nissan A/C System Oil Type S) to come in contact with styrene foam parts.
Damage may result.
CONTAMINATED REFRIGERANT
If a refrigerant other than pure HFC-134a (R-134a) is identified in a vehicle, take appropriate steps
shown below:
 Explain to the customer that environmental regulations prohibit the release of contaminated refrigerant into
the atmosphere.
 Explain that recovery of the contaminated refri gerant could damage service equipment and refrigerant sup-
ply.
 Suggest the customer return the vehicle to the locati on of previous service where the contamination may
have occurred.
 In case of repairing, recover the refrigerant using only dedicated equipment and containers. Never
recover contaminated refrigerant into the existing service equipment. If the facility does not have ded-
icated recovery equipment, contact a local refrigerant pr oduct retailer for available service. This refrigerant
must be disposed of in accordance with all federal and local regulations. In addition, replacement of all
refrigerant system components on the vehicle is recommended.
 If the vehicle is within the warranty period, the air conditioner warranty is void. Please contact Nissan Cus-
tomer Affairs for further assistance.
General Refrigerant PrecautionINFOID:0000000001328154
WARNING:
 Avoid breathing A/C refrigerant and lubricant vap or or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) from the A/C syst em, using certified service equipment meeting
requirements of SAE J-2210 [HFC-134a (R-134a) recycling equipment], or J-2209 [HFC-134a (R-134a)
recovery equipment]. If accidental system discharge occurs, ventilate work area before resuming
service. Additional health and saf ety information may be obtained from refrigerant and lubricant
manufacturers.
PIIB3706J
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PRECAUTIONSATC-5
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 Never release refrigerant into the air. Use appr oved recovery/recycling equipment to capture the
refrigerant every time an air co nditioning system is discharged.
 Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or air
conditioning system.
 Never store or heat refrigerant containers above 52 °C (126 °F).
 Never heat a refrigerant container with an open flame; if container warming is required, place the
bottom of the container in a warm pail of water.
 Never intentionally drop, puncture, or incinerate refrigerant containers.
 Keep refrigerant away from open flames: poison ous gas will be produced if refrigerant burns.
 Refrigerant will displace oxygen, therefore be certa in to work in well ventilated areas to prevent suf-
focation.
 Never pressure test or leak test HFC-134a (R-134a) service equipment and/or vehicle air conditioning
systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a) have been
shown to be combustible at elevat ed pressures. These mixtures, if ig nited, may cause injury or prop-
erty damage. Additional health a nd safety information may be obtain ed from refrigerant manufactur-
ers.
Precaution for Refrigerant ConnectionINFOID:0000000001328155
A new type refrigerant connection has been introduced to a ll refrigerant lines except the following location.
 Expansion valve to evaporator
 Refrigerant pressure sensor to condenser
ABOUT ONE-TOUCH JOINT
Description
 One-touch joints are pipe joints which do not require tools during piping connection.
 Unlike conventional connection methods using union nuts and flanges, controlling tightening torque at con-
nection point is not necessary.
 When removing a pipe joint, use a disconnector.
COMPONENT PARTS
FUNCTIONS OF COMPONENT PARTS
NOTE:
1 Pipe (Male-side)  Retains O-rings.
 Retains garter spring in cage (A).
2 Garter spring Anchors female-side piping.
3 Indicator ring When connection is made properly, this is ejected from male-side piping. (This part is no longer nec-
essary after connection.)
4 O-ring Seals connection point. (Not reusable)
5 Pipe (Female-side)  Seals connection by compressing O-rings.
 Anchors piping connection using flare (B) and garter spring.
RJIA4383J
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ATC-6
< SERVICE INFORMATION >
PRECAUTIONS
 Garter spring cannot be removed from cage of male-side piping.
 Indicator ring remains near piping connection point, however, this is not a malfunction. (This is to check pip-
ing connection during factory assembly.)
REMOVAL
1. Clean piping connection point, and set a disconnector.
2. Slide disconnector in axial direction of piping, and stretch garter spring with tapered point of disconnector.
3. Slide disconnector farther so that inside diameter of garter spring becomes larger than outside diameter of
female-side piping flare. Then male-side piping can be disconnected.
INSTALLATION
1. Clean piping connection points, and insert male-side piping into female-side piping.
2. Push inserted male-side piping harder so that female-side piping flare stretches garter spring.
3. If inside diameter of garter spring becomes larger t han outside diameter of female-side piping flare, garter
spring seats on flare. Then, it fits in between male-side piping cage and female-side piping flare to anchor
piping connection point.
NOTE:
When garter spring seats on flare, and fits in betw een male-side piping cage and female-side piping flare,
it clicks.
CAUTION:
 Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.
 Insert piping securely until a click is heard.
 After piping connection is comple ted, pull male-side piping by hand to make sure that connec-
tion does not come loose.
NOTE: One-touch joint connection is used in points below.
SJIA0106E
SJIA0107E
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PRECAUTIONSATC-7
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 Low-pressure pipe 1 to low-pressure pipe 2 (O-ring size: 16)
 High-pressure pipe 1 to high-pressure pipe 2 (O-ring size: 8)
 High-pressure pipe 2 to high-pressure pipe 3 (O-ring size: 8)
 Low-pressure flexible hose to low-pressure pipe 1 (O-ring size: 16)
 Condenser to high-pressure flexible hose (O-ring size: 12)
 Condenser to high-pressure pipe 1 (O-ring size: 8)
FEATURES OF NEW TYPE REFRIGERANT CONNECTION
 The O-ring has been relocated. It has also been provided with a groove for proper installation. This elimi- nates the possibility of the O-ring being caught in, or damaged by, the mating part. The sealing direction of
the O-ring is now set vertically in relation to the c ontacting surface of the mating part to improve sealing
characteristics.
 The reaction force of the O-ring will not occur in the dire ction that causes the joint to pull out, thereby facili-
tating piping connections.
O-RING AND REFRIGERANT CONNECTION
VQ35DE
SHA815E
SJIA1773E
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ATC-8
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PRECAUTIONS
VK45DE
CAUTION:
The new and former refrigerant connections use different O-ring configurations. Never confuse O-
rings since they are not interchangeable. If a wrong O- ring is installed, refrigerant may leak at the con-
nection.
O-Ring Part Numbers and Specifications
WARNING:
Make sure all refrigerant is discharged into the recycling equipment and the pressure in the system is
less than atmospheric pressure. Then gradually loo sen the discharge side hose fitting and remove it.
SJIA1774E
Connection type Piping connection point Part number QTY O-ring size
New Low-pressure pipe 1 to low-pressure pipe 2 (One-touch joint) 92473 N8221 2 16
Low-pressure pipe 2 to expansion valve 92473 N8210 1 16
High-pressure pipe 1 to high-pressure pipe 2 (One-touch joint) 92471 N8221 2 8
High-pressure pipe 3 to expansion valve 92471 N8210 1 8
High-pressure pipe 2 to high-pressure pipe 3 (One-touch joint) 92471 N8221 2 8
Condenser to high-pressure flexible hose (One-touch joint) 92472 N8221 2 12
Condenser to high-pressure pipe 1 (One-touch joint) 92471 N8221 2 8
Low-pressure flexible hose to low-pressure pipe 1 (One-touch joint) 92473 N8221 2 16
Low-pressure pipe to low-pressure flexible hose (VK45DE) 92474 N8210 1 19
Compressor to low-pressure flexible hose (VQ35DE) 92474 N8210 1 19
Compressor to low-pressure pipe (VK45DE) 92474 N8210 1 19
Compressor to high-pressure flexible hose 92472 N8210 1 12
Liquid tank to condenser pipe
Inlet
92471 N8210 1
8
Outlet 1
Former Refrigerant pressure sensor to condenser J2476 89956 1 10
Expansion valve to evaporator
Inlet 92475 71L00 1 12
Outlet 92475 72L00 1 16
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PRECAUTIONSATC-9
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CAUTION:
When replacing or cleaning refrigerant cycle components, observe the following.
 When the compressor is removed, store it in the sam e way at it is when mounted on the car. Failure
to do so will cause lubricant to enter the low-pressure chamber.
 When connecting tubes, always use a to rque wrench and a back-up wrench.
 After disconnecting tubes, immediately plug all op enings to prevent entry of dust and moisture.
 When installing an air conditioner in the vehicle, connect the pipes at the final stage of the operation.
Never remove the seal caps of pipes and other compon ents until just before required for connection.
 Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.
 Thoroughly remove moisture from the refriger ation system before charging the refrigerant.
 Always replace used O-rings.
 When connecting tubes, apply lubricant to circle of the O-rings shown in illustration. Be careful not
to apply lubricant to threaded portion.
 O-ring must be closely att ached to the groove of tube.
 When replacing the O-ring, be careful not to damage O-ring and tube.
 Connect tube until a click can be heard, then tighten the nut or bolt by hand. Make sure that the O-
ring is installed to tube correctly.
 After connecting line, perform leak test and make sure that there is no leakage from connections.
When the refrigerant leaking point is found, disconnect that line and replace the O-ring. Then tighten
connections of seal seat to the specified torque.
Precaution for Service of CompressorINFOID:0000000001328156
 Plug all openings to prevent moisture and foreign matter from entering.
 When the compressor is removed, store it in th e same way at it is when mounted on the car.
 When replacing or repairing compressor, follow “Maintenance of Lubricant Quantity in Compressor”
exactly. Refer to ATC-22, "
Maintenance of Lubricant Quantity in Compressor".
 Keep friction surfaces between clut ch and pulley clean. If the surface is contaminated with lubricant,
wipe it off by using a clean w aste cloth moistened with thinner.
 After compressor service operation, turn the compr essor shaft by hand more than five turns in both
directions. This will equally dist ribute lubricant inside the compressor. After the compressor is
installed, let the engine idle and operate the compressor for one hour.
 After replacing the compressor magnet clutch, ap ply voltage to the new one and check for normal
operation.
Precaution for Service EquipmentINFOID:0000000001328157
RECOVERY/RECYCLING EQUIPMENT
Name : Nissan A/C System Oil Type S
RHA861F
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ATC-10
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PRECAUTIONS
Be certain to follow the manufacturer’s instructions for machine operation and machine maintenance. Never
introduce any refrigerant other than that specified into the machine.
ELECTRICAL LEAK DETECTOR
Be certain to follow the manufacturer’s instruct ions for tester operation and tester maintenance.
VACUUM PUMP
The lubricant contained inside the vacuum pump is not compatible
with the specified lubricant for HFC-134a (R-134a) A/C systems.
The vent side of the vacuum pump is exposed to atmospheric pres-
sure. So the vacuum pump lubricant may migrate out of the pump
into the service hose. This is pos sible when the pump is switched off
after evacuation (vacuuming) and hose is connected to it.
To prevent this migration, use a manual valve placed near the hose-
to-pump connection, as follows.
 Usually vacuum pumps have a manual isolator valve as part of the pump. Close this valve to isolat e the service hose from the pump.
 For pumps without an isolator, use a hose equipped with a manual
shut-off valve near the pump end. Close the valve to isolate the
hose from the pump.
 If the hose has an automatic shut -off valve, disconnect the hose
from the pump. As long as the hos e is connected, the valve is open
and lubricating oil may migrate.
Some one-way valves open when vacuum is applied and close
under no vacuum condition. Such valves may restrict the pump’s
ability to pull a deep vacuum and are not recommended.
MANIFOLD GAUGE SET
Be certain that the gauge face indicates HFC-134a or R-134a. Be
sure the gauge set has 1/2 ″-16 ACME threaded connections for ser-
vice hoses. Confirm the set has been used only with refrigerant
HFC-134a (R-134a) and specified lubricants.
SERVICE HOSES
Be certain that the service hoses display the markings described
(colored hose with black stripe). All hoses must include positive shut-
off devices (either manual or aut omatic) near the end of the hoses
opposite to the manifold gauge.
SERVICE COUPLERS
RHA270DA
SHA533D
RHA272D
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