Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan 350Z 2003-2007 Approved Nissan 350Z 2004 atc
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AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
A
SECTION
AUTOMATIC AIR CONDITIONER
ATC B
C
D
E
CONTENTS
PRECAUTIONS ......................................................... 4
. GENERAL INFORMATION ................................ 20 . F
Precautions for Supplemental Restraint System DESCRIPTION ................................................... 21
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Component Layout ................................................ 23
.
SIONER" ................................................................. 4
. LUBRICANT ............................................................. 24
. G
Precautions for Battery Service ............................... 4 . Maintenance of Lubricant Quantity in Compressor 24 ...
Precautions for Working with HFC-134a (R-134a) 5 ..... LUBRICANT ....................................................... 24
.
CONTAMINATED REFRIGERANT ...................... 5 . LUBRICANT RETURN OPERATION ................. 24 .
H
General Refrigerant Precautions ............................. 6 . LUBRICANT ADJUSTING PROCEDURE FOR
Lubricant Precautions ............................................. 6
. COMPONENTS REPLACEMENT EXCEPT
Precautions for Refrigerant Connection .................. 6 . COMPRESSOR ................................................. 25 .
ABOUT ONE-TOUCH JOINT ............................... 7 . LUBRICANT ADJUSTING PROCEDURE FOR I
FEATURES OF NEW TYPE REFRIGERANT COMPRESSOR REPLACEMENT ...................... 25 .
CONNECTION ..................................................... 9. AIR CONDITIONER CONTROL .............................. 27 .
O-RING AND REFRIGERANT CONNECTION... 10 Description of Air Conditioner LAN Control System 27 ... ATC
Precautions for Servicing Compressor ...................11 . System Construction ............................................. 27
.
Precautions for Service Equipment ....................... 12 . OPERATION ....................................................... 28
.
RECOVERY/RECYCLING EQUIPMENT ........... 12 . TRANSMISSION DATA AND TRANSMISSION
K
ELECTRONIC LEAK DETECTOR ..................... 12 . ORDER .............................................................. 28
.
VACUUM PUMP ................................................ 12 . AIR MIX DOOR CONTROL (AUTOMATIC TEM-
MANIFOLD GAUGE SET ................................... 12 . PERATURE CONTROL) .................................... 29 .
SERVICE HOSES .............................................. 13 . FAN SPEED CONTROL ..................................... 29 . L
SERVICE COUPLERS ....................................... 13 . INTAKE DOOR CONTROL ................................ 29 .
REFRIGERANT WEIGHT SCALE ..................... 13 . OUTLET DOOR CONTROL ............................... 29 .
CHARGING CYLINDER ..................................... 13 . MAGNET CLUTCH CONTROL .......................... 30 . M
Precautions for Leak Detection Dye ...................... 14 . SELF-DIAGNOSTIC SYSTEM ........................... 30 .
IDENTIFICATION ............................................... 14 . Description of Control System ............................... 31 .
IDENTIFICATION LABEL FOR VEHICLE .......... 14 . Control Operation .................................................. 32
.
Wiring Diagrams and Trouble Diagnosis ............... 14 . TEMPERATURE CONTROL DIAL (POTENTIO
PREPARATION ........................................................ 15
. TEMPERATURE CONTROL) ............................. 32 .
Special Service Tools ............................................ 15
. INTAKE SWITCH ................................................ 32.
HFC-134a (R-134a) Service Tools and Equipment 16 ... REAR WINDOW DEFOGGER SWITCH ............ 32 .
Commercial Service Tools ..................................... 18 . A/C SWITCH ...................................................... 32
.
REFRIGERATION SYSTEM .................................... 19 . MODE CONTROL DIAL ..................................... 32 .
Refrigerant Cycle .................................................. 19
. FAN CONTROL DIAL ......................................... 32 .
REFRIGERANT FLOW ...................................... 19 . Discharge Air Flow ................................................ 33
.
FREEZE PROTECTION .................................... 19 . System Description ................................................ 34
.
Refrigerant System Protection .............................. 19 . SWITCHES AND THEIR CONTROL FUNCTION 34 ...
REFRIGERANT PRESSURE SENSOR ............ 19 . CAN Communication System Description ............. 35 .
PRESSURE RELIEF VALVE .............................. 19 . TROUBLE DIAGNOSIS ........................................... 36 .
V-6 Variable Displacement Compressor ................ 20 . CONSULT-II ........................................................... 36
.
Revision: 2004 December ATC-1 2004.5 350Z
CONSULT-II INSPECTION PROCEDURE ......... 36 . DOOR MOTOR ...................................................74 .
DATA MONITOR ................................................. 37 . Blower Motor Circuit ...............................................75 .
How to Perform Trouble Diagnoses for Quick and INSPECTION FLOW ...........................................75 .
Accurate Repair ..................................................... 38
. SYSTEM DESCRIPTION ....................................76 .
WORK FLOW ..................................................... 38 . COMPONENT DESCRIPTION ...........................77 .
SYMPTOM TABLE ............................................. 38 . DIAGNOSTIC PROCEDURE FOR BLOWER
Component Parts and Harness Connector Location 39 ... MOTOR ...............................................................77.
ENGINE COMPARTMENT ................................. 39 . COMPONENT INSPECTION ..............................79 .
PASSENGER COMPARTMENT ......................... 40 . Magnet Clutch Circuit .............................................80 .
Schematic .............................................................. 41
. INSPECTION FLOW ...........................................80 .
Wiring Diagram --A/C-- ........................................ 42 . SYSTEM DESCRIPTION ....................................81 .
Auto Amp. Terminals and Reference Value ........... 47 . DIAGNOSTIC PROCEDURE FOR MAGNET
PIN CONNECTOR TERMINAL LAYOUT ........... 47 . CLUTCH .............................................................81 .
TERMINALS AND REFERENCE VALUE FOR COMPONENT INSPECTION ..............................86 .
UNIFIED METER AND A/C AMP. ....................... 47 . Insufficient Cooling .................................................87 .
Self-diagnosis Function ......................................... 49 . INSPECTION FLOW ...........................................87 .
DESCRIPTION ................................................... 49 . PERFORMANCE TEST DIAGNOSIS .................89 .
FUNCTION CONFIRMATION PROCEDURE ..... 51 . PERFORMANCE CHART ...................................91 .
AUXILIARY MECHANISM: TEMPERATURE TROUBLE DIAGNOSIS FOR UNUSUAL PRES-
SETTING TRIMMER .......................................... 55 . SURE ..................................................................92
.
AUXILIARY MECHANISM: FOOT POSITION Insufficient Heating ................................................95 .
SETTING TRIMMER .......................................... 56 . INSPECTION FLOW ...........................................95 .
AUXILIARY MECHANISM: INLET PORT MEM- Noise ......................................................................96
.
ORY FUNCTION ................................................ 56 . INSPECTION FLOW ...........................................96 .
Operational Check ................................................. 57 . Self-diagnosis ........................................................97.
CHECKING BLOWER ........................................ 57 . INSPECTION FLOW ...........................................97 .
CHECKING DISCHARGE AIR ........................... 57 . Ambient Sensor Circuit ..........................................98 .
CHECKING INTAKE DOOR ............................... 57 . COMPONENT DESCRIPTION ...........................98 .
CHECKING TEMPERATURE DECREASE ........ 58 . AMBIENT TEMPERATURE INPUT PROCESS ...98
CHECKING TEMPERATURE INCREASE ......... 58 . DIAGNOSTIC PROCEDURE FOR AMBIENT
CHECKING A/C SWITCH .................................. 58 . SENSOR .............................................................98 .
Power Supply and Ground Circuit for Auto Amp. ... 59 COMPONENT INSPECTION ............................ 100 .
INSPECTION FLOW .......................................... 59 . In-vehicle Sensor Circuit ...................................... 100 .
COMPONENT DESCRIPTION ........................... 59 . COMPONENT DESCRIPTION ......................... 100 .
DIAGNOSTIC PROCEDURE FOR A/C SYSTEM 60 ... DIAGNOSTIC PROCEDURE FOR IN-VEHICLE
LAN System Circuit ............................................... 61 . SENSOR ........................................................... 101 .
DIAGNOSTIC PROCEDURE FOR LAN CIR- COMPONENT INSPECTION ............................ 102 .
CUIT ................................................................... 61
. Sunload Sensor Circuit ........................................ 103 .
Mode Door Motor Circuit ....................................... 65 . COMPONENT DESCRIPTION ......................... 103 .
INSPECTION FLOW .......................................... 65 . SUNLOAD INPUT PROCESS .......................... 103 .
SYSTEM DESCRIPTION ................................... 66 . DIAGNOSTIC PROCEDURE FOR SUNLOAD
COMPONENT DESCRIPTION ........................... 67 . SENSOR ........................................................... 103 .
DIAGNOSTIC PROCEDURE FOR MODE COMPONENT INSPECTION ............................ 105 .
DOOR MOTOR .................................................. 67 . Intake Sensor Circuit ............................................ 106 .
Air Mix Door Motor Circuit ..................................... 68 . COMPONENT DESCRIPTION ......................... 106 .
INSPECTION FLOW .......................................... 68 . DIAGNOSTIC PROCEDURE FOR INTAKE SEN-
SYSTEM DESCRIPTION ................................... 70 . SOR .................................................................. 106
.
COMPONENT DESCRIPTION ........................... 71 . COMPONENT INSPECTION ............................ 107 .
DIAGNOSTIC PROCEDURE FOR AIR MIX A/C CONTROLLER ................................................ 108 .
DOOR ................................................................. 71
. Removal and Installation ...................................... 108 .
Air Mix Door Motor PBR Circuit ............................. 71 . REMOVAL ......................................................... 108 .
DIAGNOSTIC PROCEDURE FOR AIR MIX INSTALLATION ................................................. 108 .
DOOR PBR ........................................................ 71 . AUTO AMP ............................................................. 109.
Intake Door Motor Circuit ....................................... 72 . Removal and Installation of Unified Meter and A/C
INSPECTION FLOW .......................................... 72 . Amp. ..................................................................... 109
.
SYSTEM DESCRIPTION ................................... 73 . REMOVAL ......................................................... 109 .
COMPONENT DESCRIPTION ........................... 74 . INSTALLATION ................................................. 109 .
DIAGNOSTIC PROCEDURE FOR INTAKE
Revision: 2004 December ATC-2 2004.5 350Z
AMBIENT SENSOR ................................................110 . Components ........................................................ 131 .
Removal and Installation ......................................110 . Removal and Installation of Compressor ............. 131 . A
REMOVAL .........................................................110
. REMOVAL ........................................................ 131 .
INSTALLATION .................................................110 . INSTALLATION ................................................ 132 .
IN-VEHICLE SENSOR ............................................ 111 . Removal and Installation of Compressor Clutch . 132 B
Removal and Installation ...................................... 111 . REMOVAL ........................................................ 132 .
REMOVAL ......................................................... 111
. INSTALLATION ................................................ 134 .
INSTALLATION ................................................. 111 . Removal and Installation of Low-pressure Flexible
SUNLOAD SENSOR ..............................................112 . Hose .................................................................... 136
. C
Removal and Installation ......................................112 . REMOVAL ........................................................ 136 .
REMOVAL .........................................................112
. INSTALLATION ................................................ 137 .
INSTALLATION .................................................112 . Removal and Installation of High-pressure Flexible D
INTAKE SENSOR ...................................................113 . Hose .................................................................... 137
.
Removal and Installation ......................................113 . REMOVAL ........................................................ 137 .
REMOVAL .........................................................113
. INSTALLATION ................................................ 138 . E
INSTALLATION .................................................113 . Removal and Installation of High-pressure Pipe 1
BLOWER UNIT .......................................................114 . (Engine Compartment) ........................................ 138 .
Removal and Installation ......................................114 . REMOVAL ........................................................ 138 .
REMOVAL .........................................................114
. INSTALLATION ................................................ 139 . F
INSTALLATION .................................................114 . Removal and Installation of Low-pressure Pipe and
Disassembly and Assembly .................................115 . High-pressure Pipe 2 ........................................... 139 .
BLOWER MOTOR ..................................................116 . REMOVAL ........................................................ 139 . G
Removal and Installation ......................................116 . INSTALLATION ................................................ 140 .
REMOVAL .........................................................116
. Removal and Installation of Liquid Tank .............. 141 .
INSTALLATION .................................................116 . REMOVAL ........................................................ 141 . H
INTAKE DOOR MOTOR .........................................117 . INSTALLATION ................................................ 141 .
Removal and Installation ......................................117 . Removal and Installation of Condenser ............... 142 .
REMOVAL .........................................................117
. REMOVAL ........................................................ 142 .
I
INSTALLATION .................................................117 . INSTALLATION ................................................ 143 .
HEATER & COOLING UNIT ASSEMBLY ..............118 . Removal and Installation of Refrigerant Pressure
Removal and Installation ......................................118 . Sensor ................................................................. 143
.
REMOVAL .........................................................118
. REMOVAL ........................................................ 143 . ATC
INSTALLATION .................................................119 . INSTALLATION ................................................ 144 .
Disassembly and Assembly ................................ 120 . Removal and Installation of Evaporator ............... 144 .
MODE DOOR MOTOR .......................................... 122 . REMOVAL ........................................................ 144 . K
Removal and Installation ..................................... 122 . INSTALLATION ................................................ 144 .
REMOVAL ........................................................ 122
. Removal and Installation of Expansion Valve ...... 145 .
INSTALLATION ................................................ 122 . REMOVAL ........................................................ 145 . L
AIR MIX DOOR MOTOR ........................................ 123 . INSTALLATION ................................................ 145 .
Removal and Installation ..................................... 123 . Checking for Refrigerant Leaks ........................... 146 .
REMOVAL ........................................................ 123
. Checking System for Leaks Using the Fluorescent
INSTALLATION ................................................ 123 . Leak Detector ...................................................... 146. M
HEATER CORE ..................................................... 124 . Dye Injection ........................................................ 146
.
Removal and Installation ..................................... 124 . Electronic Refrigerant Leak Detector ................... 147 .
REMOVAL ........................................................ 124
. PRECAUTIONS FOR HANDLING LEAK
INSTALLATION ................................................ 124 . DETECTOR ...................................................... 147 .
DUCTS AND GRILLES ......................................... 125 . CHECKING PROCEDURE .............................. 148 .
Removal and Installation ..................................... 125 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 150 .
REMOVAL ........................................................ 125
. Compressor ......................................................... 150.
INSTALLATION ................................................ 128 . Lubricant .............................................................. 150
.
REFRIGERANT LINES .......................................... 129 . Refrigerant ........................................................... 150
.
HFC-134a (R-134a) Service Procedure .............. 129 . Engine Idling Speed ............................................ 150 .
SETTING OF SERVICE TOOLS AND EQUIP- Belt Tension ......................................................... 150
.
MENT ............................................................... 129
.
Revision: 2004 December ATC-3 2004.5 350Z
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AJS001FF
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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
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 Battery Service AJS000S7
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
Revision: 2004 December ATC-4 2004.5 350Z
PRECAUTIONS
Precautions for Working with HFC-134a (R-134a) AJS0009G
A
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 B
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. C
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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