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AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
A
SECTION
AUTOMATIC AIR CONDITIONER
ATC B
C
D
E
CONTENTS
APPLICATION NOTICE ............................................. 3 . OPERATION ....................................................... 15 . F
How to Check Vehicle Type .................................... 3 . LUBRICANT LEVEL ADJUSTMENT WHEN
PRECAUTIONS ......................................................... 4
. REPLACING COMPONENTS OTHER THAN
Precautions for Supplemental Restraint System COMPRESSOR ................................................. 16 . G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- LUBRICANT LEVEL ADJUSTMENT WHEN
SIONER" ................................................................. 4
. REPLACING COMPRESSOR ............................ 16 .
Precautions for Working with HFC-134a (R-134a).... 4 . AUTO AIR CONDITIONER SYSTEM ...................... 17 .
H
General Refrigerant Precautions ............................. 4 . Description ............................................................. 17
.
Lubricant Precautions ............................................. 5
. TROUBLE DIAGNOSIS ........................................... 18 .
Precautions for Refrigerant Connection .................. 5 . CONSULT-II Functions .......................................... 18 .
FEATURES OF NEW TYPE REFRIGERANT CONSULT-II BASIC OPERATION ...................... 18 . I
CONNECTION ..................................................... 5. DATA MONITOR ................................................ 19 .
O-RING AND REFRIGERANT CONNECTION..... 6 Diagnosis Procedure ............................................. 20 .
Precautions for Servicing Compressor .................... 7 . DIAGNOSIS CHART BY SYMPTOM ................. 20 . ATC
Precautions for Service Equipment ......................... 8 . Component Parts Location .................................... 22 .
RECOVERY/RECYCLING EQUIPMENT ............. 8 . CR ENGINE MODELS ....................................... 22 .
ELECTRONIC LEAK DETECTOR ....................... 8 . HR ENGINE MODELS ....................................... 23 .
K
VACUUM PUMP .................................................. 8 . K9K ENGINE MODELS ...................................... 24 .
MANIFOLD GAUGE SET ..................................... 8 . Circuit Diagram ...................................................... 25 .
SERVICE HOSES ................................................ 9 . Wiring Diagram --A/C-- CR Engine Models ......... 26 .
SERVICE COUPLERS ......................................... 9 . Wiring Diagram --A/C-- HR Engine Models ......... 30 . L
REFRIGERANT WEIGHT SCALE ....................... 9 . Wiring Diagram --A/C-- K9K Engine Models ....... 34 .
CALIBRATING ACR4 WEIGHT SCALE ............... 9 . Wiring Diagram --PTC/H-- K9K Engine LHD Mod-
CHARGING CYLINDER ..................................... 10 . els .......................................................................... 38
. M
Precautions for Leak Detection Dye ...................... 10 . A/C Auto Amp. Input/Output Signal Standard ........ 39 .
IDENTIFICATION ............................................... 10 . Self-Diagnosis Function ......................................... 40 .
IDENTIFICATION LABEL FOR VEHICLE .......... 10 . DESCRIPTION ................................................... 40 .
PREPARATION .........................................................11
. OPERATION PROCEDURE ............................... 41 .
HFC-134a (R-134a) Service Tools and Equipment...11 . Difference Between Set Temperature and Control
REFRIGERATION SYSTEM .................................... 14 . Temperature .......................................................... 45 .
Refrigerant Cycle .................................................. 14
. DESCRIPTION ................................................... 45 .
REFRIGERANT FLOW ...................................... 14 . HOW TO SET ..................................................... 45 .
FREEZE PROTECTION .................................... 14 . Function Inspection ............................................... 45 .
Refrigerant System Protection .............................. 14 . Air Conditioning System ........................................ 47 .
REFRIGERANT PRESSURE SENSOR ............ 14 . Ambient Sensor System ........................................ 47 .
PRESSURE RELIEF VALVE .............................. 14 . In-Vehicle Sensor System ..................................... 49 .
LUBRICANT ............................................................ 15
. Sunload Sensor System ........................................ 50 .
Adjustment of Compressor Lubricant Amount ...... 15 . Intake Sensor System ........................................... 51 .
LUBRICANT ....................................................... 15
. Coolant Temperature Signal System ..................... 53 .
PROCEDURES FOR LUBRICANT RETURN Blower Motor System ............................................ 54 .
ATC-1
Intake Door Motor System ..................................... 58 . FAN CONTROL AMPLIFIER ....................................87 .
Mode Door Motor System ...................................... 58 . Removal and Installation ...................................... ..87 .
Air Mix Door Motor System .................................... 60 . DUCTS AND GRILLES ............................................88 .
Magnetic Clutch System ........................................ 61 . Removal and Installation ...................................... ..88 .
Check Fan ON Signal ............................................ 64 . COMPONENT PARTS LOCATION .....................88 .
Component Inspection ........................................... 65 . CENTRAL VENTILATOR GRILLE ......................88 .
REFRIGERANT PRESSURE SENSOR ............. 65 . SIDE VENTILATOR GRILLE ..............................88 .
Insufficient Cooling ................................................ 65. DEFROSTER NOZZLE AND DUCT ...................89 .
CHECK FUNCTION (FOR GASOLINE ENGINE).. 65 . SIDE VENTILATOR DUCT .................................90 .
DIAGNOSIS BY PRESSURE GAUGE ............... 67 . FOOT DUCT .......................................................91 .
DIAGNOSIS OF COMPRESSOR ....................... 69 . REFRIGERANT LINES ............................................92 .
Detecting Leaks With Fluorescent Indicator .......... 70 . Component Parts Location ....................................92 .
METHOD FOR DETECTING REFRIGERANT CR ENGINE MODELS ........................................92 .
LEAKAGE ........................................................... 70. HR ENGINE MODELS ........................................93 .
CONTROL UNIT ....................................................... 71 . K9K ENGINE MODELS ......................................94 .
Removal and Installation ....................................... 71 . Removal and Installation for Compressor ..............95 .
REMOVAL .......................................................... 71 . REMOVAL ...........................................................95 .
INSTALLATION ................................................... 71 . INSTALLATION ...................................................95 .
Disassembly and Assembly ................................... 71 . Removal and Installation for Pipe and Hose ..........96 .
AMBIENT SENSOR ................................................. 73 . REMOVAL ...........................................................96 .
Removal and Installation ....................................... 73 . INSTALLATION ...................................................96 .
IN-VEHICLE SENSOR ............................................. 74 . Removal and Installation for Refrigerant Pressure
Removal and Installation ....................................... 74 . Sensor ....................................................................97
.
SUNLOAD SENSOR ................................................ 75 . REMOVAL AND INSTALLATION ........................97 .
Removal and Installation ....................................... 75 . Removal and Installation for Condenser (Models
INTAKE SENSOR .................................................... 76 . without Integrated Condenser) ...............................97 .
Removal ................................................................ 76
. REMOVAL ...........................................................97 .
Installation .............................................................. 76
. INSTALLATION ...................................................98 .
A/C UNIT ASSEMBLY ............................................. 77 . Removal and Installation for Condenser (Models
Removal and Installation ....................................... 77 . with Integrated Condenser) ....................................98 .
REMOVAL .......................................................... 77 . REMOVAL ...........................................................98 .
INSTALLATION ................................................... 78 . INSTALLATION ...................................................98 .
Disassembly and Assembly ................................... 79 . RemovalandInstallationforLiquidTank(CREngine
HEATER CORE ........................................................ 81 . with A/T Models) ....................................................98 .
Removal and Installation ....................................... 81 . REMOVAL ...........................................................98 .
REMOVAL .......................................................... 81 . INSTALLATION ...................................................99 .
INSTALLATION ................................................... 81 . RemovalandInstallationforLiquidTank(ExceptCR
BLOWER MOTOR ................................................... 82 . Engine with A/T Models) ........................................99 .
Removal and Installation ....................................... 82 . REMOVAL ...........................................................99 .
REMOVAL .......................................................... 82 . INSTALLATION ...................................................99 .
INSTALLATION ................................................... 82 . Removal and Installation for Evaporator ................99 .
AIR CONDITIONER FILTER .................................... 83 . REMOVAL ...........................................................99 .
Removal, Replacement and Installation ................ 83 . INSTALLATION ................................................. 100 .
REMOVAL .......................................................... 83 . Removal and Installation for Expansion Valve ..... 100 .
REPLACEMENT ................................................. 83 . REMOVAL ......................................................... 100 .
INSTALLATION ................................................... 83 . INSTALLATION ................................................. 100 .
INTAKE DOOR MOTOR .......................................... 84 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 102 .
Removal and Installation ....................................... 84 . COMPRESSOR ................................................... 102 .
MODE DOOR MOTOR ............................................. 85 . LUBRICANT ......................................................... 102 .
Removal and Installation ....................................... 85 . REFRIGERANT ................................................... 102 .
AIR MIX DOOR MOTOR .......................................... 86 . ENGINE IDLING SPEED ..................................... 102 .
Removal and Installation ....................................... 86 . BELT TENSION ................................................... 102 .
ATC-2
APPLICATION NOTICE
APPLICATION NOTICE PFP:00000
A
How to Check Vehicle Type EJS006AJ
Confirm K9K engine type with Model written on identification plate (refer to GI-44, "IDENTIFICATION INFOR-
MATION" ), then refer to service information in ATC section. B
Vehicle type Engine type
xTKxxxxK12Vxx Euro3 48kW
xTKxxxxK12Yxx Euro3 60kW
C
xTKxxxxK12Txx Euro4 50kW
xTKxxxxK12Uxx Euro4 63kW D
E
F
G
H
I
ATC
K
L
M
ATC-3
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EJS004HI
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) EJS004HJ
WARNING:
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 failure 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:
q When removing refrigerant components from a vehicle, immediately cap (seal) the component to
minimize the entry of moisture from the atmosphere.
q When installing refrigerant components to a vehicle, do not remove the caps (unseal) until just
before connecting the components. Connect all refrigerant loop components as quickly as possi-
ble to minimize the entry of moisture into system.
q Only use the specified lubricant from a sealed container. Immediately reseal containers of lubri-
cant. Without proper sealing, lubricant will become moisture saturated and should not be used.
q 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 J2210 HFC-134a (R-134a) recycling equipment, or J2209 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.
q Do not allow lubricant (Nissan A/C System Oil Type S or R) to come in contact with styrofoam
parts. Damage may result.
General Refrigerant Precautions EJS004HK
WARNING:
q Do not release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant every time an air conditioning system is discharged.
q Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or
air conditioning system.
q Do not store or heat refrigerant containers above 52◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo