Pressure INFINITI FX35 2006 Owners Manual

AT-360
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2006 December 2006 FX35/FX45
Vehicle Speed at Which Lock-up Occurs/ReleasesNCS001J1
2WD MODELS

At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)

At half throttle, the accelerator opening is 4/8 of the full opening.
AW D M OD E LS

At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)

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

At closed throttle, the accelerator opening is less than 1/8 condition. (Closed throttle position signal: OFF)

At half throttle, the accelerator opening is 4/8 of the full opening.
Stall SpeedNCS001J2
Line PressureNCS001J3
A/T Fluid Temperature SensorNCS001J4
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 63 - 73 (39 - 45) 40 - 48 (25 - 30)
Half throttle 196 - 204 (122 - 127) 153 - 161 (95 - 100)
Engine model VQ35DE
Throttle position Vehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 59 - 67 (37 - 42) 56 - 64 (35 - 40)
Half throttle 178 - 186 (111 - 116) 139 - 147 (86 - 91)
Engine model VK45DE
Throttle position Vehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 66 - 74 (41 - 46) 53 - 61 (33 - 38)
Half throttle 191 - 199 (119 - 124) 147 - 155 (92 - 97)
Engine model VQ35DE VK45DE
Stall speed 2,650 - 2,950 rpm 2,260 - 2,560 rpm
Engine speed Line pressure kPa (kg/cm2 , psi)
R position D and M positions
At idle speed 425 - 465 (4.3 - 4.7, 62 - 67) 379 - 428 (3.9 - 4.4, 55 - 62)
At stall speed 1,605 - 1,950 (16.4 - 19.9, 233 - 283) 1,310 - 1,500 (13.4 - 15.3, 190 - 218)
Name Condition CONSULT-II “DATA MONITOR” (Approx.) Resistance (Approx.)
A/T fluid temperature sensor 1 0
°C (32 °F) 3.3 V 15 k Ω
20 °C (68 °F) 2.7 V 6.5 k Ω
80 °C (176 °F) 0.9 V 0.9 k Ω
A/T fluid temperature sensor 2 0
°C (32 °F) 3.3 V 10 k Ω
20 °C (68 °F) 2.5 V 4 k Ω
80 °C (176 °F) 0.7 V 0.5 k Ω

ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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Revision: 2006 December 2006 FX35/FX45
AUTOMATIC AIR CONDITIONER
PRECAUTIONS ..................................................... ..... 5
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 5
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect ..................................... ..... 5
OPERATION PROCEDURE ............................ ..... 5
Precautions for Procedures without Cowl Top Cover ..... 6
Precautions for Working with HFC-134a (R-134a) ..... 6
CONTAMINATED REFRIGERANT .................. ..... 7
General Refrigerant Precautions ......................... ..... 7
Precautions for Refrigerant Connection .............. ..... 8
ABOUT ONE-TOUCH JOINT ........................... ..... 8
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION ................................................. ... 10
O-RING AND REFRIGERANT CONNECTION .... 11
Precautions for Servicing Compressor ................ ... 13
Precautions for Service Equipment ..................... ... 13
RECOVERY/RECYCLING EQUIPMENT ......... ... 13
ELECTRICAL LEAK DETECTOR .................... ... 13
VACUUM PUMP .............................................. ... 14
MANIFOLD GAUGE SET ................................. ... 14
SERVICE HOSES ............................................ ... 14
SERVICE COUPLERS ..................................... ... 15
REFRIGERANT WEIGHT SCALE ................... ... 15
CHARGING CYLINDER ................................... ... 15
Precautions for Leak Detection Dye .................... ... 16
IDENTIFICATION ............................................. ... 16
IDENTIFICATION LABEL FOR VEHICLE ........ ... 16
PREPARATION ...................................................... ... 17
Special Service Tools .......................................... ... 17
HFC-134a (R-134a) Service Tools and Equipment ... 18
Commercial Service Tools ................................... ... 20
REFRIGERATION SYSTEM .................................. ... 21
Refrigerant Cycle ................................................ ... 21
REFRIGERANT FLOW .................................... ... 21
FREEZE PROTECTION .................................. ... 21
Refrigerant System Protection ............................ ... 21
REFRIGERANT PRESSURE SENSOR .......... ... 21
PRESSURE RELIEF VALVE ............................ ... 21 V-6 Variable Displacement Compressor ..............
... 22
GENERAL INFORMATION .............................. ... 22
DESCRIPTION ................................................. ... 23
Component Layout .............................................. ... 26
LUBRICANT ........................................................... ... 27
Maintenance of Lubricant Quantity in Compressor ... 27
LUBRICANT ..................................................... ... 27
LUBRICANT RETURN OPERATION ............... ... 27
LUBRICANT ADJUSTING PROCEDURE FOR
COMPONENTS REPLACEMENT EXCEPT
COMPRESSOR ............................................... ... 28
LUBRICANT ADJUSTING PROCEDURE FOR
COMPRESSOR REPLACEMENT .................... ... 29
AIR CONDITIONER CONTROL ............................ ... 30
Description of Air Conditioner LAN Control System ... 30
System Construction ........................................... ... 30
OPERATION ..................................................... ... 30
TRANSMISSION DATA AND TRANSMISSION
ORDER ............................................................ ... 31
AIR MIX DOOR CONTROL (AUTOMATIC TEM-
PERATURE CONTROL) .................................. ... 32
FAN SPEED CONTROL ................................... ... 32
INTAKE DOOR CONTROL .............................. ... 32
MODE DOOR CONTROL ................................ ... 32
MAGNET CLUTCH CONTROL ........................ ... 33
SELF-DIAGNOSIS SYSTEM ........................... ... 33
Description of Control System ............................. ... 34
Control Operation ................................................ ... 34
DISPLAY SCREEN ........................................... ... 35
AUTO SWITCH ................................................ ... 35
TEMPERATURE CONTROL SWITCH (POTEN-
TIO TEMPERATURE CONTROL) (DRIVER
SIDE) ................................................................ ... 35
TEMPERATURE CONTROL SWITCH (POTEN-
TIO TEMPERATURE CONTROL) (PASSEN-
GER SIDE) ....................................................... ... 35
INTAKE SWITCH .............................................. ... 35
DEFROSTER (DEF) SWITCH .......................... ... 35
REAR WINDOW DEFOGGER SWITCH .......... ... 35
OFF SWITCH ................................................... ... 35

ATC-3
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Revision: 2006 December 2006 FX35/FX45 COMPONENT INSPECTION ...........................
. . 111
Intake Sensor Circuit ........................................... .. 112
COMPONENT DESCRIPTION ........................ .. 112
DIAGNOSIS PROCEDURE FOR INTAKE SEN-
SOR ................................................................. .. 112
COMPONENT INSPECTION ........................... .. 113
CONTROLLER ...................................................... ..114
Removal and Installation of A/C and AV Switch .. .. 114
REMOVAL ........................................................ .. 114
INSTALLATION ................................................ .. 114
AUTO AMP ............................................................ ..115
Removal and Installation of Unified Meter and A/C
Amp. .................................................................... .. 115
REMOVAL ........................................................ .. 115
INSTALLATION ................................................ .. 115
AMBIENT SENSOR ............................................... ..116
Removal and Installation ..................................... .. 116
REMOVAL ........................................................ .. 116
INSTALLATION ................................................ .. 116
IN-VEHICLE SENSOR ........................................... ..117
Removal and Installation ..................................... .. 117
REMOVAL ........................................................ .. 117
INSTALLATION ................................................ .. 117
SUNLOAD SENSOR ............................................. ..118
Removal and Installation ..................................... .. 118
REMOVAL ........................................................ .. 118
INSTALLATION ................................................ .. 118
INTAKE SENSOR .................................................. ..119
Removal and Installation ..................................... .. 119
REMOVAL ........................................................ .. 119
INSTALLATION ................................................ .. 119
BLOWER UNIT ...................................................... . 120
Removal and Installation ..................................... . 120
REMOVAL ........................................................ . 120
INSTALLATION ................................................ . 120
Disassembly and Assembly ................................ . 121
BLOWER MOTOR ................................................. . 122
Removal and Installation ..................................... . 122
REMOVAL ........................................................ . 122
INSTALLATION ................................................ . 122
INTAKE DOOR MOTOR ........................................ . 123
Removal and Installation ..................................... . 123
REMOVAL ........................................................ . 123
INSTALLATION ................................................ . 123
IN-CABIN MICROFILTER ...................................... . 124
Removal and Installation ..................................... . 124
FUNCTION ....................................................... . 124
REPLACEMENT TIMING ................................. . 124
REPLACEMENT PROCEDURES .................... . 124
HEATER & COOLING UNIT ASSEMBLY ............. . 125
Removal and Installation ..................................... . 125
REMOVAL ........................................................ . 125
INSTALLATION ................................................ . 126
Disassembly and Assembly ................................ . 128
MODE DOOR MOTOR .......................................... . 130
Removal and Installation ..................................... . 130
REMOVAL ........................................................ . 130
INSTALLATION ................................................ . 130 AIR MIX DOOR MOTOR ........................................
.131
Removal and Installation ..................................... .131
REMOVAL ........................................................ .131
INSTALLATION ................................................ .131
HEATER CORE ...................................................... .132
Removal and Installation ..................................... .132
REMOVAL ........................................................ .132
INSTALLATION ................................................ .132
DUCTS AND GRILLES .......................................... .133
Removal and Installation ..................................... .133
REMOVAL ........................................................ .133
INSTALLATION ................................................ .136
REFRIGERANT LINES .......................................... .137
HFC-134a (R-134a) Service Procedure .............. .137
SETTING OF SERVICE TOOLS AND EQUIP-
MENT ............................................................... .137
Components ........................................................ .139
VQ35DE ........................................................... .139
VK45DE ............................................................ .140
Removal and Installation of Compressor ............. .140
REMOVAL ........................................................ .140
INSTALLATION ................................................ .142
Removal and Installation of Compressor Clutch . .142
REMOVAL ........................................................ .142
INSTALLATION ................................................ .144
Removal and Installation of Low-pressure Flexible
Hose .................................................................... .146
REMOVAL ........................................................ .146
INSTALLATION ................................................ .147
Removal and Installation of High-pressure Flexible
Hose .................................................................... .147
REMOVAL ........................................................ .147
INSTALLATION ................................................ .148
Removal and Installation of Low-pressure Pipe 1
(Engine Compartment) ........................................ .148
REMOVAL ........................................................ .148
INSTALLATION ................................................ .149
Removal and Installation of High-pressure Pipe 1
and 2 (Engine Compartment) .............................. .149
REMOVAL ........................................................ .149
INSTALLATION ................................................ .150
Removal and Installation of Low-pressure Pipe 2
and High-pressure Pipe 3 .................................... .150
REMOVAL ........................................................ .150
INSTALLATION ................................................ .152
Removal and Installation of Liquid Tank .............. .152
REMOVAL ........................................................ .152
INSTALLATION ................................................ .153
Removal and Installation of Condenser ............... .153
REMOVAL ........................................................ .153
INSTALLATION ................................................ .154
Removal and Installation of Refrigerant Pressure
Sensor ................................................................. .154
REMOVAL ........................................................ .154
INSTALLATION ................................................ .154
Removal and Installation of Evaporator ............... .154
REMOVAL ........................................................ .154
INSTALLATION ................................................ .155
Removal and Installation of Expansion Valve ...... .155

PRECAUTIONS ATC-7
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Revision: 2006 December 2006 FX35/FX45
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 refrigerant could damage service equipment and refrigerant
supply.

Suggest the customer return the vehicle to the location 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
dedicated recovery equipment, contact a local refrigerant product retailer for available service. This refrig-
erant 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 PrecautionsNJS000D9
WARNING:

Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) from the A/C system, using certified service equipment meet-
ing 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 safety information may be obtained from refrigerant and
lubricant manufacturers.

Never release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant every time an air conditioning 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: poisonous gas will be produced if refrigerant burns.

Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent
suffocation.

Never pressure test or leak test HFC-134a (R-134a) service equipment and/or vehicle air condition-
ing systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a) have
been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause injury
or property damage. Additional health and safety information may be obtained from refrigerant
manufacturers.

ATC-8
PRECAUTIONS
Revision: 2006 December 2006 FX35/FX45
Precautions for Refrigerant ConnectionNJS000DA
A new type refrigerant connection has been introduced to all 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
connection point is not necessary.

When removing a pipe joint, use a disconnector.
COMPONENT PARTS
FUNCTIONS OF COMPONENT PARTS
NOTE:

Garter spring (2) cannot be removed from cage (A) of male-side piping.

Indicator ring (3) remains near piping connection point, however, this is not a malfunction. (This is to
check piping connection during factory assembly.)
1 Pipe (Male side)
Retains O-rings (4).

Retains garter spring (2) in cage (A).
2 Garter spring Anchors female side piping (5).
3 Indicator ring When connection is made properly, this is ejected from male-side piping (1). (This part is no longer
necessary after connection.)
4 O-ring Seals connection point. (Not reusable)
5 Pipe (Female side)

Seals connection by compressing O-rings (4).

Anchors piping connection using flare (B) and garter spring (2).
RJIA4383J

ATC-10
PRECAUTIONS
Revision: 2006 December 2006 FX35/FX45

After piping connection is completed, 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.

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 contacting surface of the mating part to improve sealing
characteristics.

The reaction force of the O-ring will not occur in the direction that causes the joint to pull out, thereby facil-
itating piping connections.
SHA815E

ATC-12
PRECAUTIONS
Revision: 2006 December 2006 FX35/FX45
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 loosen the discharge side hose fitting and remove it.
CAUTION:
When replacing or cleaning refrigerant cycle components, observe the following.

When the compressor is removed, store it in the same way at it is when mounted on the car. Fail-
ure to do so will cause lubricant to enter the low-pressure chamber.

When connecting tubes, always use a torque wrench and a back-up wrench.

After disconnecting tubes, immediately plug all openings to prevent entry of dirt and moisture.

When installing an air conditioner in the vehicle, connect the pipes at the final stage of the opera-
tion. Never remove the seal caps of pipes and other components until just before required for con-
nection.

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 refrigeration 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 attached 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 until snug. Make sure
that the O-ring is installed to tube correctly.
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
Compressor to low-pressure flexible hose 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
Lubricant name : Nissan A/C System Oil Type S

PREPARATION ATC-17
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Revision: 2006 December 2006 FX35/FX45
PREPARATIONPFP:00002
Special Service ToolsNJS000DE
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name Description
KV99106100
(J-41260)
Clutch disc wrench Removing shaft nut and clutch disc
KV99232340
(J-38874)
Clutch disc puller Removing clutch disc
KV99106200
(J-41261)
Pulley installer Installing pulley
9253089908
(for high-pressure pipe 1)
(-)
9253089912
(for high-pressure flexible hose)
(-)
9253089916
(for low-pressure pipe 1 and
low-pressure flexible hose)
(-)
Disconnector tool set
(J-45815) Disconnect one-touch joint connection
S-NT232
SJIA1168E
S-NT376
S-NT235
SJIA1274E

ATC-20
PREPARATION
Revision: 2006 December 2006 FX35/FX45
Commercial Service ToolsNJS000DG
Service hoses

High-pressure side hose
(J-39501-72)

Low-pressure side hose
(J-39502-72)

Utility hose
(J-39476-72) Hose color:

Low hose: Blue with black stripe

High 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-pressure side coupler
(J-39500-20)

Low-pressure side coupler
(J-39500-24) Hose fitting to service hose:
M14 x 1.5 fitting is optional or
permanently attached.
(J-39650)
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
S-NT201
S-NT202
S-NT200
S-NT203
Tool name
Description
Refrigerant identifier equipment Checking for refrigerant purity and
system contamination
Power tool For loosening bolts and nuts
RJIA0197E
PBIC0190E

REFRIGERATION SYSTEM ATC-21
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Revision: 2006 December 2006 FX35/FX45
REFRIGERATION SYSTEMPFP:KA990
Refrigerant CycleNJS000DH
REFRIGERANT FLOW
The refrigerant flows from the compressor, through the condenser with liquid tank, through the evaporator, and
back to the compressor. The refrigerant evaporation in the evaporator is controlled by an externally equalized
expansion valve, located inside the evaporator case.
FREEZE PROTECTION
To prevent evaporator frozen up, the evaporator air temperature is monitored, and the voltage signal to the
unified meter and A/C auto amp. will make the A/C relay go OFF and stop the compressor.
Refrigerant System ProtectionNJS000DI
REFRIGERANT PRESSURE SENSOR
The refrigerant system is protected against excessively high- or low-pressure by the refrigerant pressure sen-
sor, located on the condenser. If the system pressure rises above, or falls below the specifications, the refrig-
erant pressure sensor detects the pressure inside the refrigerant line and sends the voltage signal to the ECM.
ECM makes the A/C relay go OFF and stops the compressor when pressure on the high-pressure side
detected by refrigerant pressure sensor is over about 2,746 kPa (28 kg/cm
2 , 398 psi), or below about 134 kPa
(1.4 kg/cm
2 , 20 psi).
PRESSURE RELIEF VALVE
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
When the pressure of refrigerant in the system increases to an unusual level [more than 3,727 kPa (38 kg/cm
2
, 540 psi)], the release port on the pressure relief valve automatically opens and releases refrigerant into the
atmosphere.
RJIA0849E