Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Primera 2000.2005 Approved Nissan Primera 2005 atc
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AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
A
B
SECTION
AUTOMATIC AIR CONDITIONER C
D
E
CONTENTS
PRECAUTIONS ......................................................... 4
. GENERAL INFORMATION ................................ 16 . F
Precautions for Supplemental Restraint System DESCRIPTION ................................................... 16
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Component Layout ................................................ 20
.
SIONER" ................................................................. 4
. LUBRICANT ........................................................... .. 21
. G
Precautions for Working with HFC-134a (R-134a).... 4 . Maintenance of Lubricant Quantity in Compressor .. 21 .
General Refrigerant Precautions ............................. 4 . LUBRICANT ....................................................... 21
.
Lubricant Precautions ............................................. 5
. LUBRICANT RETURN OPERATION ................. 21 .
H
Precautions for Refrigerant Connection .................. 5 . LUBRICANT ADJUSTING PROCEDURE FOR
FEATURES OF NEW TYPE REFRIGERANT COMPONENTS REPLACEMENT EXCEPT
CONNECTION ..................................................... 5. COMPRESSOR ................................................. 22 .
O-RING AND REFRIGERANT CONNECTION..... 6 LUBRICANT ADJUSTING PROCEDURE FOR I
Precautions for Servicing Compressor .................... 7 . COMPRESSOR REPLACEMENT ...................... 22 .
Precautions for Service Equipment ......................... 8 . AIR CONDITIONER CONTROL .............................. 23 .
RECOVERY/RECYCLING EQUIPMENT ............. 8 . Overview Air Conditioner LAN Control System ..... 23 . ATC
ELECTRONIC LEAK DETECTOR ....................... 8 . System Construction ............................................. 23
.
VACUUM PUMP .................................................. 8 . OPERATION ....................................................... 23
.
MANIFOLD GAUGE SET ..................................... 8 . TRANSMISSION DATA AND TRANSMISSION
K
SERVICE HOSES ................................................ 8 . ORDER .............................................................. 24
.
SERVICE COUPLERS ......................................... 9 . AIR MIX DOOR CONTROL (AUTOMATIC TEM-
REFRIGERANT WEIGHT SCALE ....................... 9 . PERATURE CONTROL) .................................... 24 .
CALIBRATING ACR4 WEIGHT SCALE ............... 9 . FAN SPEED CONTROL ................................... .. 25 . L
CHARGING CYLINDER ....................................... 9 . INTAKE DOOR CONTROL ................................ 25 .
Precautions for Leak Detection Dye ........................ 9 . OUTLET DOOR CONTROL ............................... 25 .
IDENTIFICATION ............................................... 10 . MAGNET CLUTCH CONTROL .......................... 25 . M
IDENTIFICATION LABEL FOR VEHICLE .......... 10 . SELF-DIAGNOSTIC SYSTEM ........................... 25 .
Wiring Diagrams and Trouble Diagnosis ............... 10 . Overview of Control system ................................... 25 .
PREPARATION .........................................................11
. Control Operation .................................................. 26
.
Special Service Tools .............................................11
. DISPLAY SCREEN ............................................. 26 .
HFC-134a (R-134a) Service Tools and Equipment...11 . AUTO SWITCH .................................................. 26.
REFRIGERATION SYSTEM .................................... 15 . TEMPERATURE DIAL (POTENTIO TEMPERA-
Refrigerant Cycle .................................................. 15
. TURE CONTROL) .............................................. 26 .
REFRIGERANT FLOW ...................................... 15 . A/C SWITCH .................................................... .. 26
.
FREEZE PROTECTION .................................... 15 . DEFROSTER (DEF) SWITCH ............................ 26 .
Refrigerant System Protection .............................. 15 . MODE SWITCH ............................................... .. 26.
REFRIGERANT PRESSURE SENSOR (WITH FAN SWITCH ..................................................... 26
.
GASOLINE ENGINE) ......................................... 15 . OFF SWITCH ..................................................... 26
.
DUAL-PRESSURE SWITCH (WITH DIESEL FRESH (FRE) SWITCH ................................... .. 26 .
ENGINE) ............................................................ 15
. RECIRCULATION (REC) SWITCH .................... 27 .
PRESSURE RELIEF VALVE .............................. 15 . REAR WINDOW DEFOGGER SWITCH ............ 27 .
V-6 Variable Displacement Compressor ................ 16 . Fail-safe Function .................................................. 27
.
ATC-1
Discharge Air Flow ................................................ 28
. COMPONENT DESCRIPTION ...........................68 .
System Description ................................................ 29
. DIAGNOSTIC PROCEDURE FOR BLOWER
SWITCHES AND THEIR CONTROL FUNCTION 29 ... MOTOR ............................................................. ..69
.
TROUBLE DIAGNOSIS ........................................... 30 . COMPONENT INSPECTION ..............................71 .
How to Perform Trouble Diagnoses for Quick and Magnet Clutch Circuit .............................................72 .
Accurate Repair ..................................................... 30
. INSPECTION FLOW ...........................................72 .
WORK FLOW ..................................................... 30 . SYSTEM DESCRIPTION ....................................72 .
SYMPTOM TABLE ............................................. 30 . DIAGNOSTIC PROCEDURE FOR MAGNET
Component Parts and Harness Connector Location 31 ... CLUTCH .............................................................73 .
ENGINE COMPARTMENT ................................. 31 . COMPONENT INSPECTION ..............................79 .
PASSENGER COMPARTMENT ......................... 32 . Insufficient Cooling .................................................80 .
Circuit Diagram ...................................................... 33
. INSPECTION FLOW ...........................................81 .
Wiring Diagram ...................................................... 34
. PERFORMANCE TEST DIAGNOSES ...............82 .
Auto Amp. Terminals and Reference Value ........... 39 . PERFORMANCE CHART ................................. ..84 .
PIN CONNECTOR TERMINAL LAYOUT ........... 39 . TROUBLE DIAGNOSES FOR ABNORMAL
AUTO AMP. INSPECTION TABLE ..................... 39 . PRESSURE ........................................................85 .
Self-diagnosis Function ......................................... 41 . Insufficient Heating ................................................88 .
DESCRIPTION ................................................... 41 . INSPECTION FLOW ...........................................89 .
FUNCTION CONFIRMATION PROCEDURE ..... 42 . Noise ......................................................................90
.
AUXILIARY MECHANISM: TEMPERATURE INSPECTION FLOW ...........................................91 .
SETTING TRIMMER .......................................... 47 . Self-diagnosis ...................................................... ..91
.
Operational Check ................................................. 48
. INSPECTION FLOW ...........................................92 .
CHECKING MEMORY FUNCTION .................... 49 . Memory Function ...................................................92 .
CHECKING BLOWER ........................................ 49 . INSPECTION FLOW ...........................................93 .
CHECKING DISCHARGE AIR ........................... 49 . Ambient Sensor Circuit ........................................ ..93 .
CHECKING RECIRCULATION ........................... 50 . COMPONENT DESCRIPTION ...........................93 .
CHECKING FRESH SWITCH ............................ 50 . AMBIENT TEMPERATURE INPUT PROCESS...93
CHECKING TEMPERATURE DECREASE ........ 51 . DIAGNOSTIC PROCEDURE FOR AMBIENT
CHECKING TEMPERATURE INCREASE ......... 51 . SENSOR ........................................................... ..94.
CHECKING AUTO MODE .................................. 51 . COMPONENT INSPECTION ..............................95 .
Power Supply and Ground Circuit for Auto Amp. ... 51 In-vehicle Sensor Circuit ........................................95 .
INSPECTION FLOW .......................................... 52 . COMPONENT DESCRIPTION ...........................95 .
COMPONENT DESCRIPTION ........................... 52 . DIAGNOSTIC PROCEDURE FOR IN-VEHICLE
DIAGNOSTIC PROCEDURE FOR A/C SYSTEM 53 ... SENSOR ........................................................... ..96.
LAN System Circuit ............................................... 54. COMPONENT INSPECTION ..............................97 .
DIAGNOSTIC PROCEDURE FOR LAN SYS- Sunload Sensor Circuit ........................................ ..98 .
TEM CIRCUIT .................................................... 54. COMPONENT DESCRIPTION ...........................98 .
Mode Door Motor Circuit ....................................... 56 . SUNLOAD INPUT PROCESS .......................... ..98 .
INSPECTION FLOW .......................................... 57 . DIAGNOSTIC PROCEDURE FOR SUNLOAD
SYSTEM DESCRIPTION ................................... 58 . SENSOR ........................................................... ..98.
COMPONENT DESCRIPTION ........................... 59 . COMPONENT INSPECTION ............................ 100 .
DIAGNOSTIC PROCEDURE FOR MODE Intake Sensor Circuit ............................................ 101 .
DOOR ................................................................. 59
. COMPONENT DESCRIPTION ......................... 101 .
Air Mix Door Motor Circuit ..................................... 59 . DIAGNOSTIC PROCEDURE FOR INTAKE SEN-
INSPECTION FLOW .......................................... 60 . SOR .................................................................. 101
.
SYSTEM DESCRIPTION ................................... 60 . Multiplex Communication Circuit .......................... 102 .
COMPONENT DESCRIPTION ........................... 62 . DIAGNOSTIC PROCEDURE FOR MULTIPLEX
DIAGNOSTIC PROCEDURE FOR AIR MIX COMMUNICATION CIRCUIT ........................... 102 .
DOOR MOTOR .................................................. 62 . CONTROLLER ....................................................... 107 .
Intake Door Motor Circuit ....................................... 62 . Removal and Installation ...................................... 107 .
INSPECTION FLOW .......................................... 63 . AUTO AMP ............................................................. 108 .
SYSTEM DESCRIPTION ................................... 64 . REMOVAL AND INSTALLATION ......................... 108 .
COMPONENT DESCRIPTION ........................... 64 . AMBIENT SENSOR ............................................... 109 .
DIAGNOSTIC PROCEDURE FOR INTAKE Removal and Installation ...................................... 109 .
DOOR MOTOR .................................................. 65 . IN-VEHICLE SENSOR ........................................... 110 .
Blower Motor Circuit .............................................. 65
. Removal and Installation ...................................... 110 .
INSPECTION FLOW .......................................... 66 . SUNLOAD SENSOR .............................................. 111 .
SYSTEM DESCRIPTION ................................... 67 . Removal and Installation ...................................... 111 .
ATC-2
INTAKE SENSOR CIRCUIT ...................................112 . Compressor ......................................................... 132
.
Removal and Installation ......................................112 . REMOVAL ........................................................ 132
. A
BLOWER UNIT .......................................................113 . INSTALLATION ................................................ 134 .
Removal and Installation ......................................113 . Compressor Clutch .............................................. 135 .
REMOVAL .........................................................113
. REMOVAL ........................................................ 135
. B
INSTALLATION .................................................113 . INSTALLATION ................................................ 136 .
Disassembly and Assembly .................................113 . Low-pressure Flexible Hose ................................ 138 .
BLOWER MOTOR ..................................................114 . REMOVAL ........................................................ 138
.
Removal and Installation ......................................114 . INSTALLATION ................................................ 138 . C
INTAKE DOOR MOTOR .........................................115 . High-pressure Flexible Hose ............................... 138 .
Removal and Installation ......................................115 . REMOVAL ........................................................ 138
.
HEATER & COOLING UNIT ASSEMBLY ..............116 . INSTALLATION ................................................ 139 . D
Removal and Installation ......................................116 . High-pressure Pipe .............................................. 139.
REMOVAL .........................................................116
. REMOVAL ........................................................ 139
.
INSTALLATION .................................................117 . INSTALLATION ................................................ 139 . E
Disassembly and Assembly .................................117 . Refrigerant Pressure Sensor ............................... 139 .
MODE DOOR MOTOR ...........................................119 . REMOVAL AND INSTALLATION ..................... 139 .
Removal and Installation ......................................119 . Dual-pressure Switch .......................................... 140 .
AIR MIX DOOR MOTOR ........................................ 120 . REMOVAL AND INSTALLATION ..................... 140 . F
Removal and Installation ..................................... 120 . Condenser Assembly .......................................... 140 .
FAN CONTROL AMPLIFIER ................................. 121 . REMOVAL ........................................................ 140
.
Removal and Installation ..................................... 121 . INSTALLATION ................................................ 140 . G
VENTILATION AIR FILTER ................................... 122 . Evaporator ........................................................... 141
.
Removal and Installation ..................................... 122 . REMOVAL ........................................................ 141
.
FUNCTION ....................................................... 122
. INSTALLATION ................................................ 141 . H
REPLACEMENT TIMING ................................. 122 . Expansion Valve .................................................. 141
.
REPLACEMENT AND PROCEDURES ........... 122 . REMOVAL ........................................................ 141
.
CLEANING ....................................................... 123
. INSTALLATION ................................................ 142 .
I
HEATER CORE ..................................................... 124 . Checking for Refrigerant Leaks ........................... 142 .
Removal and Installation ..................................... 124 . Checking System for Leaks Using the Fluorescent
DUCTS AND GRILLES ......................................... 125 . Leak Detector ...................................................... 142
.
Removal and Installation ..................................... 125 . Dye Injection ........................................................ 143
. ATC
VENTILATOR DUCT, DEFROSTER NOZZLE Electronic Refrigerant Leak Detector ................... 143 .
AND DEFROSTER DUCTS ............................. 125 . PRECAUTIONS FOR HANDLING LEAK
CENTER VENTILATOR GRILLE ..................... 125 . DETECTOR ...................................................... 143. K
SIDE VENTILATOR GRILLE ............................ 125 . CHECKING PROCEDURE .............................. 144 .
FOOT DUCT .................................................... 126 . Service Data and Specifications (SDS) ............... 145 .
FLOOR DUCT .................................................. 126 . COMPRESSOR ............................................... 145 .
L
REFRIGERANT LINES .......................................... 127 . LUBRICANT ..................................................... 146.
HFC-134a (R-134a) Service Procedure .............. 127 . REFRIGERANT ................................................ 146 .
SETTING OF SERVICE TOOLS AND EQUIP- ENGINE IDLING SPEED ................................. 146 .
MENT ............................................................... 127
. BELT TENSION ................................................ 146 . M
Components ........................................................ 129
.
ATC-3
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EJS001PI
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 harness connec-
tors.
Precautions for Working with HFC-134a (R-134a) EJS001HH
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:
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