Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan X-Trail 2005 2006 Approved 2006 ATC
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AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
A
SECTION
AUTOMATIC AIR CONDITIONER
ATC B
C
D
E
CONTENTS
PRECAUTIONS ......................................................... 4
. LUBRICANT ............................................................. 22
. F
Precautions for Supplemental Restraint System Maintenance of Lubricant Quantity in Compressor 22 ...
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- LUBRICANT ....................................................... 22
.
SIONER" ................................................................. 4
. LUBRICANT RETURN OPERATION ................. 22 . G
Precautions for Working with HFC-134a (R-134a) 4 ..... LUBRICANT ADJUSTING PROCEDURE FOR
CONTAMINATED REFRIGERANT ...................... 5 . COMPONENTS REPLACEMENT EXCEPT
General Refrigerant Precautions ............................. 5 . COMPRESSOR ................................................. 23 .
H
Precautions for Refrigerant Connection .................. 6 . LUBRICANT ADJUSTING PROCEDURE FOR
FEATURES OF NEW TYPE REFRIGERANT COMPRESSOR REPLACEMENT ...................... 23 .
CONNECTION ..................................................... 6. AIR CONDITIONER CONTROL .............................. 25 .
O-RING AND REFRIGERANT CONNECTION..... 7 Description of Air Conditioner LAN Control System 25 ... I
Precautions for Servicing Compressor .................... 9 . System Construction ............................................. 25
.
Precautions for Service Equipment ......................... 9 . OPERATION ....................................................... 25
.
RECOVERY/RECYCLING EQUIPMENT ............. 9 . TRANSMISSION DATA AND TRANSMISSION ATC
ELECTRICAL LEAK DETECTOR ........................ 9 . ORDER .............................................................. 26
.
VACUUM PUMP .................................................. 9 . AIR MIX DOOR CONTROL (AUTOMATIC TEM-
MANIFOLD GAUGE SET ..................................... 9 . PERATURE CONTROL) .................................... 27 .
K
SERVICE HOSES .............................................. 10 . FAN SPEED CONTROL ..................................... 27 .
SERVICE COUPLERS ....................................... 10 . INTAKE DOOR CONTROL ................................ 27 .
REFRIGERANT WEIGHT SCALE ..................... 10 . MODE DOOR CONTROL .................................. 27 .
CHARGING CYLINDER ..................................... 10 . MAGNET CLUTCH CONTROL .......................... 27 . L
Precautions for Leak Detection Dye ...................... 10 . SELF-DIAGNOSIS SYSTEM ............................. 27 .
IDENTIFICATION ................................................11 . Description of Control System ............................... 28 .
IDENTIFICATION LABEL FOR VEHICLE ...........11 . Control Operation .................................................. 29
. M
PREPARATION ........................................................ 12
. MODE CONTROL DIAL ..................................... 29 .
Special Service Tools ............................................ 12
. TEMPERATURE CONTROL DIAL (POTENTIO
HFC-134a (R-134a) Service Tools and Equipment 13 ... 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
.
DESCRIPTION ................................................... 18. WORK FLOW ..................................................... 32
.
Component Layout ................................................ 21. SYMPTOM TABLE ............................................. 32 .
Component Parts and Harness Connector Location 33 ...
Revision: 2006 July ATC-1 2006 X-Trail
ENGINE COMPARTMENT ................................. 33 . INSPECTION FLOW ...........................................70 .
PASSENGER COMPARTMENT ......................... 34 . SYSTEM DESCRIPTION ....................................71 .
Schematic -- A/C, A -- ......................................... 35. DIAGNOSIS PROCEDURE FOR MAGNET
Wiring Diagram -- A/C, A -- ................................. 36 . CLUTCH .............................................................71 .
Auto Amp. Terminals and Reference Value ........... 40 . COMPONENT INSPECTION ..............................75 .
PIN CONNECTOR TERMINAL LAYOUT ........... 40 . Insufficient Cooling .................................................76 .
TERMINALS AND REFERENCE VALUE FOR INSPECTION FLOW ...........................................76 .
AUTO AMP. ........................................................ 40
. PERFORMANCE TEST DIAGNOSIS .................78 .
Self-diagnosis Function ......................................... 42
. PERFORMANCE CHART ...................................80 .
DESCRIPTION ................................................... 42
. TROUBLE DIAGNOSIS FOR UNUSUAL PRES-
FUNCTION CONFIRMATION PROCEDURE ..... 43 . SURE ..................................................................81
.
AUXILIARY MECHANISM: TEMPERATURE Insufficient Heating ................................................84 .
SETTING TRIMMER .......................................... 47 . INSPECTION FLOW ...........................................84 .
AUXILIARY MECHANISM: FOOT POSITION Noise ......................................................................85
.
SETTING TRIMMER .......................................... 47 . INSPECTION FLOW ...........................................85 .
AUXILIARY MECHANISM: INLET PORT MEM- Self-diagnosis ........................................................86.
ORY FUNCTION ................................................ 48 . INSPECTION FLOW ...........................................86 .
Operational Check ................................................. 49
. Ambient Sensor Circuit ..........................................87 .
CHECKING BLOWER ........................................ 49 . COMPONENT DESCRIPTION ...........................87 .
CHECKING DISCHARGE AIR ........................... 49 . AMBIENT TEMPERATURE INPUT PROCESS ...87
CHECKING INTAKE AIR .................................... 49 . DIAGNOSIS PROCEDURE FOR AMBIENT
CHECKING TEMPERATURE DECREASE ........ 49 . SENSOR .............................................................87 .
CHECKING TEMPERATURE INCREASE ......... 49 . COMPONENT INSPECTION ..............................89 .
CHECKING A/C SWITCH .................................. 49 . In-vehicle Sensor Circuit ........................................89 .
Power Supply and Ground Circuit for Auto Amp. ... 50 COMPONENT DESCRIPTION ...........................89 .
INSPECTION FLOW .......................................... 50 . DIAGNOSIS PROCEDURE FOR IN-VEHICLE
COMPONENT DESCRIPTION ........................... 50 . SENSOR .............................................................90 .
DIAGNOSIS PROCEDURE FOR A/C SYSTEM... 51 COMPONENT INSPECTION ..............................91 .
LAN System Circuit ............................................... 52
. Sunload Sensor Circuit ..........................................92 .
DIAGNOSIS PROCEDURE FOR LAN CIRCUIT 52 ... COMPONENT DESCRIPTION ...........................92 .
Mode Door Motor Circuit ....................................... 55 . SUNLOAD INPUT PROCESS ............................92 .
INSPECTION FLOW .......................................... 55 . DIAGNOSIS PROCEDURE FOR SUNLOAD
SYSTEM DESCRIPTION ................................... 56 . SENSOR .............................................................92 .
COMPONENT DESCRIPTION ........................... 57 . COMPONENT INSPECTION ..............................94 .
DIAGNOSIS PROCEDURE FOR MODE DOOR Intake Sensor Circuit ..............................................95 .
MOTOR .............................................................. 57
. COMPONENT DESCRIPTION ...........................95 .
Air Mix Door Motor Circuit ..................................... 58. DIAGNOSIS PROCEDURE FOR INTAKE SEN-
INSPECTION FLOW .......................................... 58 . SOR ....................................................................95
.
SYSTEM DESCRIPTION ................................... 59 . COMPONENT INSPECTION ..............................96 .
COMPONENT DESCRIPTION ........................... 60 . CONTROLLER .........................................................97 .
DIAGNOSIS PROCEDURE FOR AIR MIX DOOR Removal and Installation ........................................97 .
MOTOR .............................................................. 60
. REMOVAL ...........................................................97 .
Air Mix Door Motor PBR Circuit ............................. 60 . INSTALLATION ...................................................97 .
DIAGNOSIS PROCEDURE FOR AIR MIX DOOR AMBIENT SENSOR .................................................98 .
MOTOR PBR ...................................................... 60
. Removal and Installation ........................................98 .
Intake Door Motor Circuit ....................................... 61
. REMOVAL ...........................................................98 .
INSPECTION FLOW .......................................... 61 . INSTALLATION ...................................................98 .
SYSTEM DESCRIPTION ................................... 62 . IN-VEHICLE SENSOR .............................................99 .
COMPONENT DESCRIPTION ........................... 63 . Removal and Installation ........................................99 .
DIAGNOSIS PROCEDURE FOR INTAKE DOOR REMOVAL ...........................................................99 .
MOTOR .............................................................. 63
. INSTALLATION ...................................................99 .
Blower Motor Circuit .............................................. 64
. SUNLOAD SENSOR .............................................. 100 .
INSPECTION FLOW .......................................... 64 . Removal and Installation ...................................... 100 .
SYSTEM DESCRIPTION ................................... 65 . REMOVAL ......................................................... 100 .
COMPONENT DESCRIPTION ........................... 66 . INSTALLATION ................................................. 100 .
DIAGNOSIS PROCEDURE FOR BLOWER INTAKE SENSOR ................................................... 101 .
MOTOR .............................................................. 66
. Removal and Installation ...................................... 101 .
COMPONENT INSPECTION ............................. 69 . REMOVAL ......................................................... 101 .
Magnet Clutch Circuit ............................................ 70
. INSTALLATION ................................................. 101 .
Revision: 2006 July ATC-2 2006 X-Trail
BLOWER UNIT ...................................................... 102 . Removal and Installation of Compressor ............. 120 .
Removal and Installation ..................................... 102 . REMOVAL ........................................................ 120 . A
REMOVAL ........................................................ 102
. INSTALLATION ................................................ 121 .
INSTALLATION ................................................ 102 . Removal and Installation of Compressor Clutch . 122
Disassembly and Assembly ................................ 103 . REMOVAL ........................................................ 122 . B
BLOWER MOTOR ................................................. 104 . INSTALLATION ................................................ 124 .
Removal and Installation ..................................... 104 . Removal and Installation of Low-pressure Flexible
REMOVAL ........................................................ 104
. Hose .................................................................... 125
.
INSTALLATION ................................................ 104 . REMOVAL ........................................................ 125 . C
INTAKE DOOR MOTOR ........................................ 105 . INSTALLATION ................................................ 125 .
Removal and Installation ..................................... 105 . Removal and Installation of High-pressure Flexible
REMOVAL ........................................................ 105
. Hose .................................................................... 126
. D
INSTALLATION ................................................ 105 . REMOVAL ........................................................ 126 .
FAN CONTROL AMPLIFIER ................................. 106 . INSTALLATION ................................................ 126 .
Removal and Installation ..................................... 106 . Removal and Installation of High-pressure Pipe . 126 E
REMOVAL ........................................................ 106
. REMOVAL ........................................................ 126 .
INSTALLATION ................................................ 106 . INSTALLATION ................................................ 127 .
IN-CABIN MICROFILTER ...................................... 107 . Removal and Installation of Condenser ............... 127 .
Removal and Installation ..................................... 107 . REMOVAL ........................................................ 127 . F
FUNCTION ....................................................... 107
. INSTALLATION ................................................ 128 .
REPLACEMENT TIMING ................................. 107 . Removal and Installation of Liquid Tank .............. 128 .
REPLACEMENT PROCEDURES .................... 107 . REMOVAL ........................................................ 128 . G
HEATER & COOLING UNIT ASSEMBLY ............. 108 . INSTALLATION ................................................ 128 .
Removal and Installation ..................................... 108 . Removal and Installation of Refrigerant Pressure
REMOVAL ........................................................ 108
. Sensor ................................................................. 129
. H
INSTALLATION ................................................ 109 . REMOVAL ........................................................ 129 .
Disassembly and Assembly .................................110 . INSTALLATION ................................................ 129 .
MODE DOOR MOTOR ........................................... 111 . Removal and Installation of Evaporator ............... 129 .
I
Removal and Installation ...................................... 111 . REMOVAL ........................................................ 129 .
REMOVAL ......................................................... 111
. INSTALLATION ................................................ 130 .
INSTALLATION ................................................. 111 . Removal and Installation of Expansion Valve ...... 130 .
AIR MIX DOOR MOTOR .........................................112 . REMOVAL ........................................................ 130 . ATC
Removal and Installation ......................................112 . INSTALLATION ................................................ 130 .
REMOVAL .........................................................112
. Checking for Refrigerant Leaks ........................... 131 .
INSTALLATION .................................................112 . Checking System for Leaks Using the Fluorescent K
HEATER CORE ......................................................113 . Leak Detector ...................................................... 131.
Removal and Installation ......................................113 . Dye Injection ........................................................ 131
.
REMOVAL .........................................................113
. Electrical Leak Detector ....................................... 132 . L
INSTALLATION .................................................113 . PRECAUTIONS FOR HANDLING LEAK
DUCTS AND GRILLES ..........................................114 . DETECTOR ...................................................... 132 .
Removal and Installation ......................................114 . CHECKING PROCEDURE .............................. 133 .
REMOVAL .........................................................114
. SERVICE DATA AND SPECIFICATIONS (SDS) ... 135 . M
INSTALLATION .................................................117 . Compressor ......................................................... 135.
REFRIGERANT LINES ...........................................118 . Lubricant .............................................................. 135
.
HFC-134a (R-134a) Service Procedure ...............118 . Refrigerant ........................................................... 135
.
SETTING OF SERVICE TOOLS AND EQUIP- Engine Idling Speed ............................................ 135 .
MENT ................................................................118
. Belt Tension ......................................................... 135
.
Components ........................................................ 120
.
Revision: 2006 July ATC-3 2006 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
CAUTION:
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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