Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti FX45 FX35 2006-2008 Approved FX45_35-S50-2008 atc
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AIR CONDITIONER
A
SECTION
AUTOMATIC AIR CONDITIONER
ATC B
C
D
E
CONTENTS
SERVICE INFORMATION ........................... 3
. CONSULT-III Function ...........................................32 . F
How to Perform Trouble Diagnosis for Quick and
PRECAUTIONS .................................................. 3
. Accurate Repair ......................................................32 .
Precaution for Supplemental Restraint System Component Parts and Harness Connector Loca- G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- tion ..........................................................................34
.
SIONER" .................................................................. 3
. Schematic ...............................................................36.
Precaution Necessary for Steering Wheel Rota- Wiring Diagram - A/C - ...........................................37 .
H
tion After Battery Disconnect .................................... 3. Auto Amp. Terminal and Reference Value .............42 .
Precaution for Procedure without Cowl Top Cover 4 ...... Self-Diagnosis Function ..........................................43 .
Precaution for Working with HFC-134a (R-134a)...... 4 Operational Check ..................................................50 .
General Refrigerant Precaution ............................... 4 . Power Supply and Ground Circuit for Auto Amp ....52 I
Precaution for Refrigerant Connection ..................... 5 . LAN System Circuit ................................................54 .
Precaution for Service of Compressor ..................... 9 . Mode Door Motor Circuit ........................................57 .
Precaution for Service Equipment ............................ 9 . Air Mix Door Motor Circuit ......................................59 . ATC
Precaution for Leak Detection Dye ........................ 11 . Air Mix Door Motor PBR Circuit ..............................62 .
Intake Door Motor Circuit ........................................62 .
PREPARATION .................................................13
. Blower Motor Circuit ...............................................64 .
Special Service Tool .............................................. 13
. K
Magnet Clutch Circuit .............................................69 .
HFC-134a (R-134a) Service Tool and Equipment 13 .... Insufficient Cooling .................................................75 .
Commercial Service Tool ....................................... 16
. Insufficient Heating .................................................82 .
Noise ......................................................................83
. L
REFRIGERATION SYSTEM .............................17
.
Self-Diagnosis ........................................................84 .
Refrigerant Cycle ................................................... 17
.
Memory Function ....................................................85 .
Refrigerant System Protection ............................... 17 .
Ambient Sensor Circuit ...........................................86 . M
V-6 Variable Displacement Compressor ................ 17 .
In-vehicle Sensor Circuit .........................................88 .
Component Part Location ...................................... 21.
Sunload Sensor Circuit ...........................................91 .
LUBRICANT ......................................................22
. Intake Sensor Circuit ..............................................94 . N
Maintenance of Lubricant Quantity in Compressor 22
....
CONTROLLER .................................................. 97
AIR CONDITIONER CONTROL ........................24
. Removal and Installation of A/C and AV Switch .....97
.
Description of Air Conditioner LAN Control Sys- O
tem ......................................................................... 24
.
AUTO AMP ........................................................ 98
Removal and Installation of Unified Meter and A/C
System Construction .............................................. 24 .
Amp ........................................................................98
.
Description of Control System ................................ 27 . P
Control Operation ................................................... 27 . AMBIENT SENSOR .......................................... 99
Fail-Safe Function .................................................. 28 . Removal and Installation ........................................99
.
Discharge Air Flow ................................................. 29 .
System Description ................................................ 30 . IN-VEHICLE SENSOR .................................... 100
CAN Communication System Description .............. 30 . Removal and Installation ...................................... 100
.
TROUBLE DIAGNOSIS ....................................32
. SUNLOAD SENSOR ....................................... 101
Revision: 2007 April ATC-1 2008 FX35/FX45
Removal and Installation ......................................101
. Component .......................................................... 121.
Removal and Installation of Compressor ............. 123 .
INTAKE SENSOR ........................................... 102
. Removal and Installation of Compressor Clutch .. 125 .
Removal and Installation ......................................102
. Removal and Installation of Low-Pressure Flexi-
ble Hose ............................................................... 128
.
BLOWER UNIT ............................................... 103
.
Removal and Installation of High-pressure Flexi-
Removal and Installation ......................................103
.
ble Hose ............................................................... 129
.
Disassembly and Assembly ..................................104
.
Removal and Installation of Low-Pressure Pipe 1
BLOWER MOTOR .......................................... 105
. (Engine Compartment) ......................................... 131 .
Removal and Installation ......................................105
. Removal and Installation of High-pressure Pipe 1
and 2 (Engine Compartment) ............................... 132 .
INTAKE DOOR MOTOR ................................. 106
. Removal and Installation of Low-Pressure Pipe 2
Removal and Installation ......................................106
. and High-pressure Pipe 3 .................................... 133 .
Removal and Installation of Liquid Tank .............. 134 .
IN-CABIN MICROFILTER ............................... 107
. Removal and Installation of Condenser ............... 135 .
Removal and Installation ......................................107
. Removal and Installation of Refrigerant Pressure
Sensor .................................................................. 137
.
HEATER & COOLING UNIT ASSEMBLY ...... 108
.
Removal and Installation of Evaporator ............... 137 .
Removal and Installation ......................................108
.
Removal and Installation of Expansion Valve ...... 138 .
Disassembly and Assembly ..................................111
.
Checking of Refrigerant Leaks ............................. 138 .
MODE DOOR MOTOR ................................... 113
. Checking System for Leaks Using the Fluorescent
Removal and Installation ......................................113
. Leak Detector ....................................................... 138
.
Dye Injection ........................................................ 139
.
AIR MIX DOOR MOTOR ................................. 114
. Electrical Leak Detector ....................................... 139 .
Removal and Installation ......................................114
.
SERVICE DATA AND SPECIFICATIONS
HEATER CORE .............................................. 115
. (SDS) ............................................................... 142
.
Removal and Installation ......................................115
. Compressor ......................................................... 142
.
Lubricant .............................................................. 142
.
DUCTS AND GRILLES ................................... 116
. Refrigerant ........................................................... 142
.
Removal and Installation ......................................116
. Engine Idling Speed ............................................. 142 .
REFRIGERANT LINES ................................... 120
. Belt Tension ......................................................... 142
.
HFC-134a (R-134a) Service Procedure ...............120
.
Revision: 2007 April ATC-2 2008 FX35/FX45
PRECAUTIONS
< SERVICE INFORMATION >
SERVICE INFORMATION A
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT B
PRE-TENSIONER" INFOID:0000000001612929
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along C
with a front seat belt, helps to reduce the risk or severity 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. D
Information necessary to service the system safely is included in the "SUPPLEMENTAL RESTRAINT SYS-
TEM" and "SEAT BELTS" of this Service Manual.
WARNING: E
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