Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan X-Trail 2005 2006 Approved 2005 ATC
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AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
A
SECTION
AUTOMATIC AIR CONDITIONER
ATC B
C
D
E
CONTENTS
PRECAUTIONS ......................................................... 4
. DESCRIPTION ................................................... 18
. F
Precautions for Supplemental Restraint System Component Layout ................................................ 21
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- LUBRICANT ............................................................. 22
.
SIONER" ................................................................. 4
. Maintenance of Lubricant Quantity in Compressor 22 ... G
Precautions for Working with HFC-134a (R-134a) 4 ..... LUBRICANT ....................................................... 22
.
CONTAMINATED REFRIGERANT ...................... 5 . LUBRICANT RETURN OPERATION ................. 22 .
General Refrigerant Precautions ............................. 5 . LUBRICANT ADJUSTING PROCEDURE FOR
H
Lubricant Precautions ............................................. 5
. COMPONENTS REPLACEMENT EXCEPT
Precautions for Refrigerant Connection .................. 6 . COMPRESSOR ................................................. 23 .
FEATURES OF NEW TYPE REFRIGERANT LUBRICANT ADJUSTING PROCEDURE FOR
CONNECTION ..................................................... 6. COMPRESSOR REPLACEMENT ...................... 23 . I
O-RING AND REFRIGERANT CONNECTION..... 7 AIR CONDITIONER CONTROL .............................. 25 .
Precautions for Servicing Compressor .................... 9 . Description of Air Conditioner LAN Control System 25 ...
Precautions for Service Equipment ......................... 9 . System Construction ............................................. 25
. ATC
RECOVERY/RECYCLING EQUIPMENT ............. 9 . OPERATION ....................................................... 25
.
ELECTRONIC LEAK DETECTOR ....................... 9 . TRANSMISSION DATA AND TRANSMISSION
VACUUM PUMP .................................................. 9 . ORDER .............................................................. 26
.
K
MANIFOLD GAUGE SET ..................................... 9 . AIR MIX DOOR CONTROL (AUTOMATIC TEM-
SERVICE HOSES .............................................. 10 . PERATURE CONTROL) .................................... 27 .
SERVICE COUPLERS ....................................... 10 . FAN SPEED CONTROL ..................................... 27 .
REFRIGERANT WEIGHT SCALE ..................... 10 . INTAKE DOOR CONTROL ................................ 27 . L
CHARGING CYLINDER ..................................... 10 . OUTLET DOOR CONTROL ............................... 27 .
Precautions for Leak Detection Dye ...................... 10 . MAGNET CLUTCH CONTROL .......................... 27 .
IDENTIFICATION ................................................11 . SELF-DIAGNOSTIC SYSTEM ........................... 27 . M
IDENTIFICATION LABEL FOR VEHICLE ...........11 . Description of Control System ............................... 28 .
Wiring Diagrams and Trouble Diagnosis ................11 . Control Operation .................................................. 29
.
PREPARATION ........................................................ 12
. MODE CONTROL DIAL ..................................... 29 .
Special Service Tools ............................................ 12
. TEMPERATURE CONTROL DIAL (POTENTIO
HFC-134a (R-134a) Service Tools and Equipment 12 ... TEMPERATURE CONTROL) ............................. 29 .
Commercial Service Tools ..................................... 15 . FAN CONTROL DIAL ......................................... 29 .
REFRIGERATION SYSTEM .................................... 16 . REAR WINDOW DEFOGGER SWITCH ............ 29 .
Refrigerant Cycle .................................................. 16
. INTAKE SWITCH ................................................ 29.
REFRIGERANT FLOW ...................................... 16 . A/C SWITCH ...................................................... 29
.
FREEZE PROTECTION .................................... 16 . Discharge Air Flow ................................................ 30
.
Refrigerant System Protection .............................. 16 . System Description ................................................ 31
.
REFRIGERANT PRESSURE SENSOR ............ 16 . SWITCHES AND THEIR CONTROL FUNCTION 31 ...
PRESSURE RELIEF VALVE .............................. 16 . TROUBLE DIAGNOSIS ........................................... 32 .
V-6 Variable Displacement Compressor ................ 17 . How to Perform Trouble Diagnoses for Quick and
GENERAL INFORMATION ................................ 17 . Accurate Repair ..................................................... 32
.
WORK FLOW ..................................................... 32
.
Revision: 2005 March ATC-1 2005 X-Trail
SYMPTOM TABLE ............................................. 32 . INSPECTION FLOW ...........................................72 .
Component Parts and Harness Connector Location 33 ... SYSTEM DESCRIPTION ....................................73 .
ENGINE COMPARTMENT ................................. 33 . DIAGNOSTIC PROCEDURE FOR MAGNET
PASSENGER COMPARTMENT ......................... 34 . CLUTCH .............................................................73 .
Schematic -- A/C, A -- ......................................... 35 . COMPONENT INSPECTION ..............................77 .
Wiring Diagram -- A/C, A -- ................................. 36 . Insufficient Cooling .................................................78 .
Auto Amp. Terminals and Reference Value ........... 40 . INSPECTION FLOW ...........................................78 .
PIN CONNECTOR TERMINAL LAYOUT ........... 40 . PERFORMANCE TEST DIAGNOSIS .................80 .
TERMINALS AND REFERENCE VALUE FOR PERFORMANCE CHART ...................................82 .
AUTO AMP. ........................................................ 40. TROUBLE DIAGNOSIS FOR UNUSUAL PRES-
Self-diagnosis Function ......................................... 42 . SURE ..................................................................83
.
DESCRIPTION ................................................... 42 . Insufficient Heating ................................................86 .
FUNCTION CONFIRMATION PROCEDURE ..... 44 . INSPECTION FLOW ...........................................86 .
AUXILIARY MECHANISM: TEMPERATURE Noise ......................................................................87
.
SETTING TRIMMER .......................................... 48 . INSPECTION FLOW ...........................................87 .
AUXILIARY MECHANISM: FOOT POSITION Self-diagnosis ........................................................88.
SETTING TRIMMER .......................................... 49 . INSPECTION FLOW ...........................................88 .
AUXILIARY MECHANISM: INLET PORT MEM- Ambient Sensor Circuit ..........................................89 .
ORY FUNCTION ................................................ 49 . COMPONENT DESCRIPTION ...........................89 .
Operational Check ................................................. 50 . AMBIENT TEMPERATURE INPUT PROCESS ...89
CHECKING BLOWER ........................................ 50 . DIAGNOSTIC PROCEDURE FOR AMBIENT
CHECKING DISCHARGE AIR ........................... 50 . SENSOR .............................................................89 .
CHECKING INTAKE DOOR ............................... 50 . COMPONENT INSPECTION ..............................91 .
CHECKING TEMPERATURE DECREASE ........ 51 . In-vehicle Sensor Circuit ........................................91 .
CHECKING TEMPERATURE INCREASE ......... 51 . COMPONENT DESCRIPTION ...........................91 .
CHECKING A/C SWITCH .................................. 51 . DIAGNOSTIC PROCEDURE FOR IN-VEHICLE
Power Supply and Ground Circuit for Auto Amp. ... 52 SENSOR .............................................................92 .
INSPECTION FLOW .......................................... 52 . COMPONENT INSPECTION ..............................93 .
COMPONENT DESCRIPTION ........................... 52 . Sunload Sensor Circuit ..........................................94 .
DIAGNOSTIC PROCEDURE FOR A/C SYSTEM 53 ... COMPONENT DESCRIPTION ...........................94 .
LAN System Circuit ............................................... 54 . SUNLOAD INPUT PROCESS ............................94 .
DIAGNOSTIC PROCEDURE FOR LAN CIR- DIAGNOSTIC PROCEDURE FOR SUNLOAD
CUIT ................................................................... 54
. SENSOR .............................................................94 .
Mode Door Motor Circuit ....................................... 57 . COMPONENT INSPECTION ..............................96 .
INSPECTION FLOW .......................................... 57 . Intake Sensor Circuit ..............................................97 .
SYSTEM DESCRIPTION ................................... 58 . COMPONENT DESCRIPTION ...........................97 .
COMPONENT DESCRIPTION ........................... 59 . DIAGNOSTIC PROCEDURE FOR INTAKE SEN-
DIAGNOSTIC PROCEDURE FOR MODE SOR ....................................................................97
.
DOOR MOTOR .................................................. 59 . COMPONENT INSPECTION ..............................98 .
Air Mix Door Motor Circuit ..................................... 60 . CONTROLLER .........................................................99 .
INSPECTION FLOW .......................................... 60 . Removal and Installation ........................................99 .
SYSTEM DESCRIPTION ................................... 61 . REMOVAL ...........................................................99 .
COMPONENT DESCRIPTION ........................... 62 . INSTALLATION ...................................................99 .
DIAGNOSTIC PROCEDURE FOR AIR MIX AMBIENT SENSOR ............................................... 100 .
DOOR MOTOR .................................................. 62 . Removal and Installation ...................................... 100 .
Intake Door Motor Circuit ....................................... 63 . REMOVAL ......................................................... 100 .
INSPECTION FLOW .......................................... 63 . INSTALLATION ................................................. 100 .
SYSTEM DESCRIPTION ................................... 64 . IN-VEHICLE SENSOR ........................................... 101 .
COMPONENT DESCRIPTION ........................... 65 . Removal and Installation ...................................... 101 .
DIAGNOSTIC PROCEDURE FOR INTAKE REMOVAL ......................................................... 101 .
DOOR MOTOR .................................................. 65 . INSTALLATION ................................................. 101 .
Blower Motor Circuit .............................................. 66 . SUNLOAD SENSOR .............................................. 102 .
INSPECTION FLOW .......................................... 66 . Removal and Installation ...................................... 102 .
SYSTEM DESCRIPTION ................................... 67 . REMOVAL ......................................................... 102 .
COMPONENT DESCRIPTION ........................... 68 . INSTALLATION ................................................. 102 .
DIAGNOSTIC PROCEDURE FOR BLOWER INTAKE SENSOR ................................................... 103 .
MOTOR .............................................................. 68
. Removal and Installation ...................................... 103 .
COMPONENT INSPECTION ............................. 71 . REMOVAL ......................................................... 103 .
Magnet Clutch Circuit ............................................ 72 . INSTALLATION ................................................. 103 .
Revision: 2005 March ATC-2 2005 X-Trail
BLOWER UNIT ...................................................... 104 . Removal and Installation of Compressor ............. 122 .
Removal and Installation ..................................... 104 . REMOVAL ........................................................ 122 . A
REMOVAL ........................................................ 104
. INSTALLATION ................................................ 123 .
INSTALLATION ................................................ 104 . Removal and Installation of Compressor Clutch . 124
Disassembly and Assembly ................................ 105 . REMOVAL ........................................................ 124 . B
BLOWER MOTOR ................................................. 106 . INSTALLATION ................................................ 126 .
Removal and Installation ..................................... 106 . Removal and Installation of Low-Pressure Flexible
REMOVAL ........................................................ 106
. Hose .................................................................... 127
.
INSTALLATION ................................................ 106 . REMOVAL ........................................................ 127 . C
INTAKE DOOR MOTOR ........................................ 107 . INSTALLATION ................................................ 127 .
Removal and Installation ..................................... 107 . Removal and Installation of High-Pressure Flexible
REMOVAL ........................................................ 107
. Hose .................................................................... 128
. D
INSTALLATION ................................................ 107 . REMOVAL ........................................................ 128 .
FAN CONTROL AMPLIFIER ................................. 108 . INSTALLATION ................................................ 128 .
Removal and Installation ..................................... 108 . Removal and Installation of High-Pressure Pipe . 128 E
REMOVAL ........................................................ 108
. REMOVAL ........................................................ 128 .
INSTALLATION ................................................ 108 . INSTALLATION ................................................ 129 .
IN-CABIN MICROFILTER ...................................... 109 . Removal and Installation of Condenser ............... 129 .
Removal and Installation ..................................... 109 . REMOVAL ........................................................ 129 . F
FUNCTION ....................................................... 109
. INSTALLATION ................................................ 130 .
REPLACEMENT TIMING ................................. 109 . Removal and Installation of Liquid Tank .............. 130 .
REPLACEMENT PROCEDURES .................... 109 . REMOVAL ........................................................ 130 . G
HEATER & COOLING UNIT ASSEMBLY ..............110 . INSTALLATION ................................................ 130 .
Removal and Installation ......................................110 . Removal and Installation of Refrigerant Pressure
REMOVAL .........................................................110
. Sensor ................................................................. 131
. H
INSTALLATION ................................................. 111 . REMOVAL ........................................................ 131 .
Disassembly and Assembly .................................112 . INSTALLATION ................................................ 131 .
MODE DOOR MOTOR ...........................................113 . Removal and Installation of Evaporator ............... 131 .
I
Removal and Installation ......................................113 . REMOVAL ........................................................ 131 .
REMOVAL .........................................................113
. INSTALLATION ................................................ 132 .
INSTALLATION .................................................113 . Removal and Installation of Expansion Valve ...... 132 .
AIR MIX DOOR MOTOR .........................................114 . REMOVAL ........................................................ 132 . ATC
Removal and Installation ......................................114 . INSTALLATION ................................................ 132 .
REMOVAL .........................................................114
. Checking for Refrigerant Leaks ........................... 133 .
INSTALLATION .................................................114 . Checking System for Leaks Using the Fluorescent K
HEATER CORE ......................................................115 . Leak Detector ...................................................... 133.
Removal and Installation ......................................115 . Dye Injection ........................................................ 133
.
REMOVAL .........................................................115
. Electronic Refrigerant Leak Detector ................... 134 . L
INSTALLATION .................................................115 . PRECAUTIONS FOR HANDLING LEAK
DUCTS AND GRILLES ..........................................116 . DETECTOR ...................................................... 134 .
Removal and Installation ......................................116 . CHECKING PROCEDURE .............................. 135 .
REMOVAL .........................................................116
. SERVICE DATA AND SPECIFICATIONS (SDS) ... 137 . M
INSTALLATION .................................................119 . Compressor ......................................................... 137.
REFRIGERANT LINES .......................................... 120 . Lubricant .............................................................. 137
.
HFC-134a (R-134a) Service Procedure .............. 120 . Refrigerant ........................................................... 137
.
SETTING OF SERVICE TOOLS AND EQUIP- Engine Idling Speed ............................................ 137 .
MENT ............................................................... 120
. Belt Tension ......................................................... 137
.
Components ........................................................ 122
.
Revision: 2005 March ATC-3 2005 X-Trail
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AJS001OL
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
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. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
q To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer.
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Working with HFC-134a (R-134a) AJS001OI
WARNING:
q CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. If the refrigerants
are mixed and compressor malfunction is likely to occur, refer to "CONTAMINATED REFRIGER-
ANT" below. To determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use
Refrigerant Recovery/Recycling Recharging equipment and Refrigerant identifier.
q 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.
q The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The fol-
lowing handling precautions must be observed:
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