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AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
A
B
SECTION
AUTOMATIC AIR CONDITIONER C
D
E
CONTENTS
PRECAUTIONS ......................................................... 3
. COMPRESSOR ................................................. 15 . F
Precautions for Supplemental Restraint System LUBRICANT LEVEL ADJUSTMENT WHEN
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- REPLACING COMPRESSOR ............................ 15 .
SIONER" ................................................................. 3
. AUTO AIR CONDITIONER SYSTEM ...................... 16 . G
Precautions for Working with HFC-134a (R-134a).... 3 . Description ............................................................. 16
.
General Refrigerant Precautions ............................. 3 . TROUBLE DIAGNOSIS ........................................... 17 .
Lubricant Precautions ............................................. 4
. CONSULT-II Functions .......................................... 17 .
H
Precautions for Refrigerant Connection .................. 4 . CONSULT-II BASIC OPERATION ...................... 17 .
FEATURES OF NEW TYPE REFRIGERANT DATA MONITOR ................................................ 18 .
CONNECTION ..................................................... 4. Diagnosis Procedure ............................................. 19 .
O-RING AND REFRIGERANT CONNECTION..... 5 DIAGNOSIS CHART BY SYMPTOM ................. 19 . I
Precautions for Servicing Compressor .................... 6 . Component Parts Location .................................... 21 .
Precautions for Service Equipment ......................... 6 . CR ENGINE MODELS ....................................... 21 .
RECOVERY/RECYCLING EQUIPMENT ............. 6 . K9K ENGINE MODELS ...................................... 22 . ATC
ELECTRONIC LEAK DETECTOR ....................... 6 . Circuit Diagram ...................................................... 23
.
VACUUM PUMP .................................................. 7 . Wiring Diagram --A/C-- CR Engine Models ......... 24 .
MANIFOLD GAUGE SET ..................................... 7 . Wiring Diagram --A/C-- K9K Engine Models ....... 28 .
K
SERVICE HOSES ................................................ 7 . A/C Auto Amp. Input/Output Signal Standard ........ 32 .
SERVICE COUPLERS ......................................... 8 . Self-Diagnosis Function ......................................... 33 .
REFRIGERANT WEIGHT SCALE ....................... 8 . DESCRIPTION ................................................... 33 .
CALIBRATING ACR4 WEIGHT SCALE ............... 8 . OPERATION PROCEDURE ............................... 34 . L
CHARGING CYLINDER ....................................... 9 . Difference Between Set Temperature and Control
Precautions for Leak Detection Dye ........................ 9 . Temperature .......................................................... 38
.
IDENTIFICATION ................................................. 9. DESCRIPTION ................................................... 38 . M
IDENTIFICATION LABEL FOR VEHICLE ............ 9 . HOW TO SET ..................................................... 38 .
Wiring Diagram and Trouble Diagnosis ................... 9 . Function Inspection ............................................... 38.
PREPARATION ........................................................ 10
. Air Conditioning System ........................................ 40 .
HFC-134a (R-134a) Service Tools and Equipment.. 10 . Ambient Sensor System ........................................ 40 .
REFRIGERATION SYSTEM .................................... 13 . In-Vehicle Sensor System ..................................... 42 .
Refrigerant Cycle .................................................. 13
. Sunload Sensor System ........................................ 43 .
REFRIGERANT FLOW ...................................... 13 . Intake Sensor System ........................................... 44 .
Refrigerant System Protection .............................. 13 . Coolant Temperature Signal System ..................... 46 .
REFRIGERANT PRESSURE SENSOR ............ 13 . Blower Motor System ............................................ 47 .
LUBRICANT ............................................................ 14
. Intake Door Motor System ..................................... 51 .
Adjustment of Compressor Lubricant Amount ...... 14 . Mode Door Motor System ...................................... 51 .
LUBRICANT ....................................................... 14
. Air Mix Door Motor System .................................... 53 .
PROCEDURES FOR LUBRICANT RETURN Magnetic Clutch System ........................................ 54 .
OPERATION ...................................................... 14
. Check Fan ON Signal ............................................ 57 .
LUBRICANT LEVEL ADJUSTMENT WHEN Insufficient Cooling ................................................ 58
.
REPLACING COMPONENTS OTHER THAN CHECK FUNCTION (FOR CR ENGINE) ........... 58 .
ATC-1
DIAGNOSIS BY PRESSURE GAUGE ............... 60 . REFRIGERANT LINES ............................................84 .
DIAGNOSIS OF COMPRESSOR ....................... 61 . Component Parts Location ....................................84 .
Detecting Leaks With Fluorescent Indicator .......... 62 . CR ENGINE MODELS ........................................84 .
METHOD FOR DETECTING REFRIGERANT K9K ENGINE MODELS ......................................85 .
LEAKAGE. .......................................................... 62. Removal and Installation for Compressor ..............85 .
CONTROL UNIT ....................................................... 63 . REMOVAL ...........................................................85 .
Removal and Installation ....................................... 63 . INSTALLATION ...................................................86 .
REMOVAL .......................................................... 63 . Removal and Installation for Low-Pressure Flexible
INSTALLATION ................................................... 63 . Hose (CR Engine Models) .....................................86 .
Disassembly and Assembly ................................... 63 . REMOVAL ...........................................................86 .
AMBIENT SENSOR ................................................. 65 . INSTALLATION ...................................................87 .
Removal and Installation ....................................... 65 . RemovalandInstallationforHigh-PressureFlexible
IN-VEHICLE SENSOR ............................................. 66 . Hose (CR Engine Models) .....................................87 .
Removal and Installation ....................................... 66 . REMOVAL ...........................................................87 .
SUNLOAD SENSOR ................................................ 67 . INSTALLATION ...................................................88 .
Removal and Installation ....................................... 67 . Removal and Installation for High-Pressure Pipe
INTAKE SENSOR .................................................... 68 . (CR Engine Models) ...............................................88 .
Removal ................................................................ 68
. REMOVAL ...........................................................88 .
Installation .............................................................. 68
. INSTALLATION ...................................................88 .
A/C UNIT ASSEMBLY ............................................. 69 . Removal and Installation for Pipe and Hose (K9K
Removal and Installation ....................................... 69 . Engine Models) ......................................................89 .
REMOVAL .......................................................... 69 . COMPONENTS ..................................................89 .
INSTALLATION ................................................... 70 . REMOVAL ...........................................................89 .
Disassembly and Assembly ................................... 71 . INSTALLATION ...................................................90 .
HEATER CORE ........................................................ 73 . Removal and Installation for Refrigerant Pressure
Removal and Installation ....................................... 73 . Sensor ....................................................................90
.
REMOVAL .......................................................... 73 . REMOVAL AND INSTALLATION ........................90 .
INSTALLATION ................................................... 73 . RemovalandInstallationforCondenser(CREngine
BLOWER MOTOR ................................................... 74 . Models) ..................................................................90
.
Removal and Installation ....................................... 74 . REMOVAL ...........................................................90 .
REMOVAL .......................................................... 74 . INSTALLATION ...................................................91 .
INSTALLATION ................................................... 74 . Removal and Installation for Condenser (K9K
AIR CONDITIONER FILTER .................................... 75 . Engine Models) ......................................................91 .
Removal, Replacement and Installation ................ 75 . REMOVAL ...........................................................91 .
REMOVAL .......................................................... 75 . INSTALLATION ...................................................91 .
REPLACEMENT ................................................. 75 . RemovalandInstallationforLiquidTank(CREngien
INSTALLATION ................................................... 75 . Models) ..................................................................92
.
INTAKE DOOR MOTOR .......................................... 76 . REMOVAL ...........................................................92 .
Removal and Installation ....................................... 76 . INSTALLATION ...................................................92 .
MODE DOOR MOTOR ............................................. 77 . Removal and Installation for Liquid Tank (K9K
Removal and Installation ....................................... 77 . Engine Models) ......................................................92 .
AIR MIX DOOR MOTOR .......................................... 78 . REMOVAL ...........................................................92 .
Removal and Installation ....................................... 78 . INSTALLATION ...................................................93 .
FAN CONTROL AMPLIFIER ................................... 79 . Removal and Installation for Evaporator ................93 .
Removal and Installation ....................................... 79 . REMOVAL ...........................................................93 .
DUCTS AND GRILLES ............................................ 80 . INSTALLATION ...................................................93 .
Removal and Installation ....................................... 80 . Removal and Installation for Expansion Valve .......94 .
COMPONENT PARTS LOCATION .................... 80 . REMOVAL ...........................................................94 .
CENTRAL VENTILATOR GRILLE ...................... 80 . INSTALLATION ...................................................94 .
SIDE VENTILATOR GRILLE .............................. 80 .
DEFROSTER NOZZLE AND DUCT ................... 81 .
SIDE VENTILATOR DUCT ................................. 82 .
FOOT DUCT ....................................................... 83 .
ATC-2
PRECAUTIONS
PRECAUTIONS PFP:00001
A
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 B
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. C
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. D
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. E
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. F
Precautions for Working with HFC-134a (R-134a) EJS004HJ
WARNING: G
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- H
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.
I
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- ATC
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- K
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 L
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. M
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