2006 INFINITI M35 pressure

ON-VEHICLE SERVICE
AT-245
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Revision: 2006 January2006 M35/M45
A/T FLUID TEMPERATURE SENSOR 2 REMOVAL AND INSTALLATION
Removal
1. Disconnect the battery cable from the negative terminal.
2. Drain ATF through drain plug.
3. Disconnect heated oxygen sensor 2 harness connector.
4. Remove oil pan and oil pan gasket.
5. Check foreign materials in oil pan to help determine causes of
malfunction. If the ATF is very dark, smells burned, or contains
foreign particles, the frictional 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.
If frictional material is detected, perform A/T fluid cooler
cleaning. Refer to AT- 1 4 , "
A/T Fluid Cooler Cleaning" .
6. Disconnect A/T fluid temperature sensor 2 connector.
CAUTION:
Be careful not to damage connector.
7. Straighten terminal clip to free A/T fluid temperature sensor 2
harness.
SCIA2308E
SCIA5199E
SCIA5023E
SCIA5146E

ON-VEHICLE SERVICE
AT-263
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Revision: 2006 January2006 M35/M45
7. Check foreign materials in oil pan to help determine causes of
malfunction. If the ATF is very dark, smells burned, or contains
foreign particles, the frictional 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.
If frictional material is detected, perform A/T fluid cooler
cleaning. Refer to AT- 1 4 , "
A/T Fluid Cooler Cleaning" .
8. Support A/T assembly with a transmission jack.
CAUTION:
When setting transmission jack, place wooden blocks to
prevent from damaging control valve with TCM and trans-
mission case.
9. Remove rear engine mounting member with power tool. Refer to AT-271, "
Removal and Installation (2WD
Models)" .
10. Remove rear extension assembly (VQ35DE models) or output shaft & companion flange complement
(VK45DE models) according to the following procedures.
a.VQ35DE models
i. Remove tightening bolts for rear extension assembly and trans-
mission case.
ii. Tap rear extension assembly with a soft hammer.
iii. Remove rear extension assembly from transmission case. (With
needle bearing.)
SCIA5199E
SCIA6941E
SCIA3432E
SCIA3431E

AT-304
DISASSEMBLY
Revision: 2006 January2006 M35/M45
28. Remove oil pan and oil pan gasket.
29. Check foreign materials in oil pan to help determine causes of
malfunction. If the ATF is very dark, smells burned, or contains
foreign particles, the frictional 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.
If frictional material is detected, perform A/T fluid cooler
cleaning. Refer to AT- 1 4 , "
A/T Fluid Cooler Cleaning" .
30. Remove magnets from oil pan.
31. Disconnect A/T fluid temperature sensor 2 connector.
CAUTION:
Be careful not to damage connector.
32. Straighten terminal clips to free terminal cord assembly and A/T
fluid temperature sensor 2 harness.
SCIA2308E
SCIA5199E
SCIA5200E
SCIA5023E
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AT-366
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2006 January2006 M35/M45
Vehicle Speed at Which Lock-Up Occurs/ReleasesNCS001RF
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.
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.
Stall SpeedNCS001RG
Line PressureNCS001RH
A/T Fluid Temperature SensorNCS001RI
Engine model VQ35DE
Throttle positionVehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 53 - 61 (33 - 38) 50 - 58 (31 - 36)
Half throttle 196 - 204 (122 - 127) 138 - 146 (86 - 91)
Engine model VK45DE
Throttle positionVehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 67 - 75 (42 - 47) 50 - 58 (31 - 36)
Half throttle 181 - 189 (112 - 117) 160 - 168 (99 - 104)
Engine model VQ35DE
Throttle positionVehicle speed km/h (MPH)
Lock-up ON Lock-up OFF
Closed throttle 51 - 59 (32 - 37) 48 - 56 (30 - 35)
Half throttle 188 - 196 (117 - 122) 132 - 140 (82 - 87)
Engine model Stall speed
VQ35DE 2,650 - 2,950 rpm
VK45DE 2,260 - 2,560 rpm
Engine speedLine pressure [kPa (kg/cm
2 , psi)]
“R” position “D”, “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.)
ATF TEMP SE 10
C (32F) 3.3 V 15 k
20C (68F) 2.7 V 6.5 k
80C (176F) 0.9 V 0.9 k
ATF TEMP SE 20
C (32F) 3.3 V 10 k
20C (68F) 2.5 V 4 k
80C (176F) 0.7 V 0.5 k

ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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SECTION AT C
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Revision: 2006 January2006 M35/M45
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 ................... 7
ABOUT ONE-TOUCH JOINT ................................ 7
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION .................................................... 10
O-RING AND REFRIGERANT CONNECTION ... 10
Precautions for Servicing Compressor ................... 12
Precautions for Service Equipment ........................ 13
RECOVERY/RECYCLING EQUIPMENT ............ 13
ELECTRICAL LEAK DETECTOR ....................... 13
VACUUM PUMP ................................................. 13
MANIFOLD GAUGE SET .................................... 13
SERVICE HOSES ............................................... 14
SERVICE COUPLERS ........................................ 14
REFRIGERANT WEIGHT SCALE ...................... 14
CHARGING CYLINDER ...................................... 14
Precautions for Leak Detection Dye ....................... 15
IDENTIFICATION ................................................ 15
IDENTIFICATION LABEL FOR VEHICLE ........... 15
PREPARATION ......................................................... 16
Special Service Tools ............................................. 16
HFC-134a (R-134a) Service Tools and Equipment ... 17
Commercial Service Tools ...................................... 19
REFRIGERATION SYSTEM ..................................... 20
Refrigerant Cycle ................................................... 20
REFRIGERANT FLOW ....................................... 20
FREEZE PROTECTION ..................................... 20
Refrigerant System Protection ............................... 20
REFRIGERANT PRESSURE SENSOR ............. 20
PRESSURE RELIEF VALVE ............................... 20Variable Displacement Compressor ....................... 21
GENERAL INFORMATION ................................. 21
DESCRIPTION .................................................... 22
Component Layout ................................................. 25
LUBRICANT .............................................................. 26
Maintenance of Lubricant Quantity in Compressor ... 26
LUBRICANT ........................................................ 26
LUBRICANT RETURN OPERATION .................. 26
LUBRICANT ADJUSTING PROCEDURE FOR
COMPONENTS REPLACEMENT EXCEPT
COMPRESSOR .................................................. 27
LUBRICANT ADJUSTING PROCEDURE FOR
COMPRESSOR REPLACEMENT ....................... 27
AIR CONDITIONER CONTROL ............................... 29
Description of Air Conditioner LAN Control System ... 29
System Construction .............................................. 29
OPERATION ........................................................ 30
TRANSMISSION DATA AND TRANSMISSION
ORDER ............................................................... 30
AIR MIX DOOR CONTROL (AUTOMATIC TEM-
PERATURE CONTROL) ..................................... 31
FAN SPEED CONTROL ...................................... 31
INTAKE DOOR CONTROL ................................. 31
MODE DOOR CONTROL ................................... 31
UPPER VENTILATOR DOOR CONTROL .......... 31
MAGNET CLUTCH CONTROL ........................... 32
SELF-DIAGNOSIS SYSTEM .............................. 32
Description of Control System ................................ 33
Control Operation ................................................... 33
DISPLAY SCREEN .............................................. 33
MULTIFUNCTION SWITCH ................................ 34
DISPLAY SCREEN .............................................. 34
MODE SWITCH (DRIVER SIDE) ........................ 34
MODE SWITCH (PASSENGER SIDE) ................ 34
TEMPERATURE CONTROL SWITCH (POTEN-
TIO TEMPERATURE CONTROL) (DRIVER
SIDE) ................................................................... 34
TEMPERATURE CONTROL SWITCH (POTEN-
TIO TEMPERATURE CONTROL) (PASSEN-
GER SIDE) .......................................................... 34

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Revision: 2006 January2006 M35/M45 INSPECTION FLOW ......................................... . 111
Memory Function .................................................. 112
INSPECTION FLOW .......................................... 112
Ambient Sensor Circuit ......................................... 113
COMPONENT DESCRIPTION .......................... 113
AMBIENT TEMPERATURE INPUT PROCESS .. 113
DIAGNOSIS PROCEDURE FOR AMBIENT
SENSOR ............................................................ 113
COMPONENT INSPECTION ............................. 115
In-Vehicle Sensor Circuit ....................................... 116
COMPONENT DESCRIPTION .......................... 116
DIAGNOSIS PROCEDURE FOR IN-VEHICLE
SENSOR ............................................................ 117
COMPONENT INSPECTION ............................. 118
Sunload Sensor Circuit ......................................... 119
COMPONENT DESCRIPTION .......................... 119
SUNLOAD INPUT PROCESS ........................... 119
DIAGNOSIS PROCEDURE FOR SUNLOAD
SENSOR ............................................................ 119
COMPONENT INSPECTION ............................121
Intake Sensor Circuit ............................................122
COMPONENT DESCRIPTION .........................122
DIAGNOSIS PROCEDURE FOR INTAKE SEN-
SOR ..................................................................122
COMPONENT INSPECTION ............................123
CONTROLLER .......................................................124
Removal and Installation of Multifunction Switch . 124
REMOVAL ........................................................
.124
INSTALLATION .................................................124
AUTO AMP .............................................................125
Removal and Installation of Unified Meter and A/C
Auto Amp. ............................................................125
REMOVAL ........................................................
.125
INSTALLATION .................................................125
AMBIENT SENSOR ................................................126
Removal and Installation ......................................126
REMOVAL ........................................................
.126
INSTALLATION .................................................126
IN-VEHICLE SENSOR ............................................127
Removal and Installation ......................................127
REMOVAL ........................................................
.127
INSTALLATION .................................................127
SUNLOAD SENSOR ..............................................128
Removal and Installation ......................................128
REMOVAL ........................................................
.128
INSTALLATION .................................................128
INTAKE SENSOR .................................................. .129
Removal and Installation ......................................129
REMOVAL ........................................................
.129
INSTALLATION .................................................129
BLOWER UNIT .......................................................130
Removal and Installation ......................................130
REMOVAL ........................................................
.130
INSTALLATION .................................................130
Disassembly and Assembly .................................131
BLOWER MOTOR ..................................................132
Removal and Installation ......................................132
REMOVAL ........................................................
.132
INSTALLATION .................................................132INTAKE DOOR MOTOR .........................................133
Removal and Installation ......................................133
REMOVAL ........................................................
.133
INSTALLATION .................................................133
IN-CABIN MICROFILTER .......................................134
Removal and Installation ......................................134
FUNCTION .......................................................
.134
REPLACEMENT TIMING ..................................134
REPLACEMENT PROCEDURES .....................134
HEATER & COOLING UNIT ASSEMBLY ...............135
Removal and Installation ......................................135
REMOVAL ........................................................
.135
INSTALLATION .................................................136
Disassembly and Assembly ..................................138
MODE DOOR MOTOR ............................................140
Removal and Installation ......................................140
REMOVAL ........................................................
.140
INSTALLATION .................................................140
AIR MIX DOOR MOTOR .........................................141
Removal and Installation ......................................141
REMOVAL ........................................................
.141
INSTALLATION .................................................141
UPPER VENTILATOR DOOR MOTOR ..................142
Removal and Installation ......................................142
REMOVAL ........................................................
.142
INSTALLATION .................................................142
HEATER CORE .......................................................143
Removal and Installation ......................................143
REMOVAL ........................................................
.143
INSTALLATION .................................................143
DUCTS AND GRILLES ...........................................144
Removal and Installation ......................................144
COMPONENT LAYOUT ....................................144
REMOVAL ........................................................
.146
INSTALLATION .................................................150
REFRIGERANT LINES ...........................................151
HFC-134a (R-134a) Service Procedure ...............151
SETTING OF SERVICE TOOLS AND EQUIP-
MENT ................................................................151
Components ....................................................
.....153
VQ35DE ............................................................153
VK45DE .............................................................154
Removal and Installation of Compressor ..............155
REMOVAL ........................................................
.155
INSTALLATION .................................................157
Check Disc to Pulley Clearance ...........................157
Removal and Installation of Low-Pressure Flexible
Hose and Pipe ......................................................158
REMOVAL ........................................................
.158
INSTALLATION .................................................158
Removal and Installation of High-Pressure Flexible
Hose .....................................................................159
REMOVAL ........................................................
.159
INSTALLATION .................................................160
Removal and Installation of High-Pressure Pipe 1
(Engine Compartment) .........................................160
REMOVAL ........................................................
.160
INSTALLATION .................................................161
Removal and Installation of Low-Pressure Pipe 1

ATC-4Revision: 2006 January2006 M35/M45 and High-Pressure Pipe 2 ....................................162
REMOVAL ........................................................
.162
INSTALLATION ..................................................163
Removal and Installation of Liquid Tank ...............164
DISASSEMBLY AND ASSEMBLY ....................164
REMOVAL ........................................................
.164
INSTALLATION ..................................................165
Removal and Installation of Condenser ................165
REMOVAL ........................................................
.165
INSTALLATION ..................................................167
Removal and Installation of Refrigerant Pressure
Sensor ..................................................................167
REMOVAL ........................................................
.167
INSTALLATION ..................................................167
Removal and Installation of Evaporator ................168
REMOVAL ........................................................
.168
INSTALLATION ..................................................168Removal and Installation of Expansion Valve .......169
REMOVAL ..........................................................169
INSTALLATION ..................................................169
Checking for Refrigerant Leaks ............................170
Checking System for Leaks Using the Fluorescent
Leak Detector ........................................................170
Dye Injection .........................................................170
Electrical Refrigerant Leak Detector .....................171
PRECAUTIONS FOR HANDLING LEAK
DETECTOR .......................................................171
CHECKING PROCEDURE ................................172
SERVICE DATA AND SPECIFICATIONS (SDS) ....174
Compressor ..........................................................174
Lubricant ...............................................................174
Refrigerant ............................................................174
Engine Idling Speed ..............................................174
Belt Tension ..........................................................174

PRECAUTIONS
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Revision: 2006 January2006 M35/M45
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 PrecautionsNJS000FR
WAR NING :
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 52C (126F).
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.
Precautions for Refrigerant ConnectionNJS000FS
A new type refrigerant connection has been introduced to all refrigerant lines except the following location.
Expansion valve to evaporator
Refrigerant pressure sensor to liquid tank
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.