Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan 350Z 2003-2007 Approved Nissan 350Z 2007 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 ............................................................. 21
. F
Precautions for Supplemental Restraint System Maintenance of Lubricant Quantity in Compressor 21 ...
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- LUBRICANT ....................................................... 21
.
SIONER" ................................................................. 4
. LUBRICANT RETURN OPERATION ................. 21 . G
Precautions for Battery Service ............................... 4 . LUBRICANT ADJUSTING PROCEDURE FOR
Precautions for Procedures without Cowl Top Cover 4 ..... COMPONENTS REPLACEMENT EXCEPT
Precautions for Working with HFC-134a (R-134a) 5 ..... COMPRESSOR ................................................. 22 .
H
CONTAMINATED REFRIGERANT ...................... 5 . LUBRICANT ADJUSTING PROCEDURE FOR
General Refrigerant Precautions ............................. 6 . COMPRESSOR REPLACEMENT ...................... 23 .
Precautions for Refrigerant Connection .................. 7 . AIR CONDITIONER CONTROL .............................. 24 .
ABOUT ONE-TOUCH JOINT ............................... 7 . Description of Air Conditioner LAN Control System 24 ... I
FEATURES OF NEW TYPE REFRIGERANT System Construction ............................................. 24
.
CONNECTION ..................................................... 9. OPERATION ....................................................... 25
.
O-RING AND REFRIGERANT CONNECTION... 10 TRANSMISSION DATA AND TRANSMISSION ATC
Precautions for Servicing Compressor .................. 12 . ORDER .............................................................. 25
.
Precautions for Service Equipment ....................... 12 . AIR MIX DOOR CONTROL (AUTOMATIC TEM-
RECOVERY/RECYCLING EQUIPMENT ........... 12 . PERATURE CONTROL) .................................... 26 .
K
ELECTRICAL LEAK DETECTOR ...................... 12 . FAN SPEED CONTROL ..................................... 26 .
VACUUM PUMP ................................................ 12 . INTAKE DOOR CONTROL ................................ 26 .
MANIFOLD GAUGE SET ................................... 12 . MODE DOOR CONTROL .................................. 26 .
SERVICE HOSES .............................................. 13 . MAGNET CLUTCH CONTROL .......................... 27 . L
SERVICE COUPLERS ....................................... 13 . SELF-DIAGNOSIS SYSTEM ............................. 27 .
REFRIGERANT WEIGHT SCALE ..................... 13 . Description of Control System ............................... 28 .
CHARGING CYLINDER ..................................... 13 . Control Operation .................................................. 29
. M
Precautions for Leak Detection Dye ...................... 14 . MODE CONTROL DIAL ..................................... 29 .
IDENTIFICATION ............................................... 14 . TEMPERATURE CONTROL DIAL (POTENTIO
IDENTIFICATION LABEL FOR VEHICLE .......... 14 . TEMPERATURE CONTROL) ............................. 29 .
PREPARATION ........................................................ 15
. FAN CONTROL DIAL ......................................... 29 .
Special Service Tools ............................................ 15
. REAR WINDOW DEFOGGER SWITCH ............ 29 .
HFC-134a (R-134a) Service Tools and Equipment 16 ... INTAKE SWITCH ................................................ 29.
Commercial Service Tools ..................................... 18 . A/C SWITCH ...................................................... 29
.
REFRIGERATION SYSTEM .................................... 19 . Discharge Air Flow ................................................ 30
.
Refrigerant Cycle .................................................. 19
. System Description ................................................ 31
.
REFRIGERANT FLOW ...................................... 19 . SWITCHES AND THEIR CONTROL FUNCTION 31 ...
FREEZE PROTECTION .................................... 19 . CAN Communication System Description ............. 32 .
Refrigerant System Protection .............................. 19 . TROUBLE DIAGNOSIS ........................................... 33 .
REFRIGERANT PRESSURE SENSOR ............ 19 . CONSULT-III Function (BCM) ............................... 33 .
PRESSURE RELIEF VALVE .............................. 19 . DATA MONITOR ................................................ 33 .
Component Layout ................................................ 20. How to Perform Trouble Diagnosis for Quick and
Accurate Repair ..................................................... 34
.
Revision: 2006 November ATC-1 2007 350Z
WORK FLOW ..................................................... 34 . COMPONENT INSPECTION ..............................73 .
SYMPTOM TABLE ............................................. 34 . Magnet Clutch Circuit .............................................74 .
Component Parts and Harness Connector Location 35 ... INSPECTION FLOW ...........................................74 .
ENGINE COMPARTMENT ................................. 35 . SYSTEM DESCRIPTION ....................................75 .
PASSENGER COMPARTMENT ......................... 36 . DIAGNOSIS PROCEDURE FOR MAGNET
Schematic .............................................................. 37
. CLUTCH .............................................................75 .
Wiring Diagram -- A/C -- ...................................... 38 . COMPONENT INSPECTION ..............................80 .
Auto Amp. Terminals and Reference Value ........... 43 . Insufficient Cooling .................................................81 .
PIN CONNECTOR TERMINAL LAYOUT ........... 43 . INSPECTION FLOW ...........................................81 .
TERMINALS AND REFERENCE VALUE FOR PERFORMANCE TEST DIAGNOSIS .................83 .
UNIFIED METER AND A/C AMP. ....................... 43 . PERFORMANCE CHART ...................................85 .
Self-diagnosis Function ......................................... 45 . TROUBLE DIAGNOSIS FOR UNUSUAL PRES-
DESCRIPTION ................................................... 45 . SURE ..................................................................86
.
FUNCTION CONFIRMATION PROCEDURE ..... 46 . Insufficient Heating ................................................89 .
AUXILIARY MECHANISM: TEMPERATURE INSPECTION FLOW ...........................................89 .
SETTING TRIMMER .......................................... 50 . Noise ......................................................................90
.
AUXILIARY MECHANISM: FOOT POSITION INSPECTION FLOW ...........................................90 .
SETTING TRIMMER .......................................... 51 . Self-diagnosis ........................................................91.
AUXILIARY MECHANISM: INLET PORT MEM- INSPECTION FLOW ...........................................91 .
ORY FUNCTION ................................................ 51 . Ambient Sensor Circuit ..........................................92 .
Operational Check ................................................. 53
. COMPONENT DESCRIPTION ...........................92 .
CHECKING BLOWER ........................................ 53 . AMBIENT TEMPERATURE INPUT PROCESS ...92
CHECKING DISCHARGE AIR ........................... 53 . DIAGNOSIS PROCEDURE FOR AMBIENT
CHECKING INTAKE DOOR ............................... 53 . SENSOR .............................................................92 .
CHECKING TEMPERATURE DECREASE ........ 53 . COMPONENT INSPECTION ..............................94 .
CHECKING TEMPERATURE INCREASE ......... 53 . In-vehicle Sensor Circuit ........................................94 .
CHECKING A/C SWITCH .................................. 53 . COMPONENT DESCRIPTION ...........................94 .
Power Supply and Ground Circuit for Auto Amp. ... 54 DIAGNOSIS PROCEDURE FOR IN-VEHICLE
INSPECTION FLOW .......................................... 54 . SENSOR .............................................................95 .
COMPONENT DESCRIPTION ........................... 54 . COMPONENT INSPECTION ..............................96 .
DIAGNOSIS PROCEDURE FOR A/C SYSTEM... 55 Sunload Sensor Circuit ..........................................97 .
LAN System Circuit ............................................... 56. COMPONENT DESCRIPTION ...........................97 .
DIAGNOSIS PROCEDURE FOR LAN CIRCUIT 56 ... SUNLOAD INPUT PROCESS ............................97 .
Mode Door Motor Circuit ....................................... 60 . DIAGNOSIS PROCEDURE FOR SUNLOAD
INSPECTION FLOW .......................................... 60 . SENSOR .............................................................97 .
SYSTEM DESCRIPTION ................................... 61 . COMPONENT INSPECTION ..............................99 .
COMPONENT DESCRIPTION ........................... 62 . Intake Sensor Circuit ............................................ 100 .
DIAGNOSIS PROCEDURE FOR MODE DOOR COMPONENT DESCRIPTION ......................... 100 .
MOTOR .............................................................. 62
. DIAGNOSIS PROCEDURE FOR INTAKE SEN-
Air Mix Door Motor Circuit ..................................... 63 . SOR .................................................................. 100
.
INSPECTION FLOW .......................................... 63 . COMPONENT INSPECTION ............................ 101 .
SYSTEM DESCRIPTION ................................... 64 . A/C CONTROLLER ................................................ 102 .
COMPONENT DESCRIPTION ........................... 65 . Removal and Installation ...................................... 102 .
DIAGNOSIS PROCEDURE FOR AIR MIX DOOR 65 ... REMOVAL ......................................................... 102 .
Air Mix Door Motor PBR Circuit ............................. 65 . INSTALLATION ................................................. 102 .
DIAGNOSIS PROCEDURE FOR AIR MIX DOOR Disassembly and Assembly ................................. 102 .
MOTOR PBR ...................................................... 65. AUTO AMP ............................................................. 103 .
Intake Door Motor Circuit ....................................... 66 . Removal and Installation of Unified Meter and A/C
INSPECTION FLOW .......................................... 66 . Amp. ..................................................................... 103
.
SYSTEM DESCRIPTION ................................... 67 . REMOVAL ......................................................... 103 .
COMPONENT DESCRIPTION ........................... 68 . INSTALLATION ................................................. 103 .
DIAGNOSIS PROCEDURE FOR INTAKE DOOR AMBIENT SENSOR ............................................... 104 .
MOTOR .............................................................. 68
. Removal and Installation ...................................... 104 .
Blower Motor Circuit .............................................. 69
. REMOVAL ......................................................... 104 .
INSPECTION FLOW .......................................... 69 . INSTALLATION ................................................. 104 .
SYSTEM DESCRIPTION ................................... 70 . IN-VEHICLE SENSOR ........................................... 105 .
COMPONENT DESCRIPTION ........................... 71 . Removal and Installation ...................................... 105 .
DIAGNOSIS PROCEDURE FOR BLOWER REMOVAL ......................................................... 105 .
MOTOR .............................................................. 71
. INSTALLATION ................................................. 105 .
Revision: 2006 November ATC-2 2007 350Z
SUNLOAD SENSOR ............................................. 106 . REMOVAL ........................................................ 125 .
Removal and Installation ..................................... 106 . INSTALLATION ................................................ 126 . A
REMOVAL ........................................................ 106
. Check Disc to Pulley Clearance .......................... 126 .
INSTALLATION ................................................ 106 . Removal and Installation of Low-pressure Flexible
INTAKE SENSOR .................................................. 107 . Hose and Pipe 2 .................................................. 127 . B
Removal and Installation ..................................... 107 . REMOVAL ........................................................ 127 .
REMOVAL ........................................................ 107
. INSTALLATION ................................................ 128 .
INSTALLATION ................................................ 107 . Removal and Installation of High-pressure Flexible
BLOWER UNIT ...................................................... 108 . Hose .................................................................... 128
. C
Removal and Installation ..................................... 108 . REMOVAL ........................................................ 128 .
REMOVAL ........................................................ 108
. INSTALLATION ................................................ 129 .
INSTALLATION ................................................ 108 . Removal and Installation of High-pressure Pipe 1 D
Disassembly and Assembly ................................ 109 . (Engine Compartment) ........................................ 130 .
BLOWER MOTOR ..................................................110 . REMOVAL ........................................................ 130 .
Removal and Installation ......................................110 . INSTALLATION ................................................ 130 . E
REMOVAL .........................................................110
. Removal and Installation of Low-pressure Pipe 1
INSTALLATION .................................................110 . and High-pressure Pipe 2 .................................... 131 .
INTAKE DOOR MOTOR ......................................... 111 . REMOVAL ........................................................ 131 .
Removal and Installation ...................................... 111 . INSTALLATION ................................................ 132 . F
REMOVAL ......................................................... 111
. Removal and Installation of Liquid Tank .............. 132 .
INSTALLATION ................................................. 111 . REMOVAL ........................................................ 132 .
HEATER & COOLING UNIT ASSEMBLY ..............112 . INSTALLATION ................................................ 133 . G
Removal and Installation ......................................112 . Removal and Installation of Condenser ............... 133 .
REMOVAL .........................................................112
. REMOVAL ........................................................ 133 .
INSTALLATION .................................................113 . INSTALLATION ................................................ 134 . H
Disassembly and Assembly .................................114 . Removal and Installation of Refrigerant Pressure
MODE DOOR MOTOR ...........................................116 . Sensor ................................................................. 135
.
Removal and Installation ......................................116 . REMOVAL ........................................................ 135 .
I
REMOVAL .........................................................116
. INSTALLATION ................................................ 135 .
INSTALLATION .................................................116 . Removal and Installation of Evaporator ............... 135 .
AIR MIX DOOR MOTOR .........................................117 . REMOVAL ........................................................ 135 .
Removal and Installation ......................................117 . INSTALLATION ................................................ 135 . ATC
REMOVAL .........................................................117
. Removal and Installation of Expansion Valve ...... 137 .
INSTALLATION .................................................117 . REMOVAL ........................................................ 137 .
HEATER CORE ......................................................118 . INSTALLATION ................................................ 137 . K
Removal and Installation ......................................118 . Checking for Refrigerant Leaks ........................... 138 .
REMOVAL .........................................................118
. Checking System for Leaks Using the Fluorescent
INSTALLATION .................................................118 . Leak Detector ...................................................... 138. L
DUCTS AND GRILLES ..........................................119 . Dye Injection ........................................................ 138
.
Removal and Installation ......................................119 . Electrical Leak Detector ....................................... 139 .
COMPONENT LAYOUT ....................................119 . PRECAUTIONS FOR HANDLING LEAK
REMOVAL .........................................................119
. DETECTOR ...................................................... 139 . M
INSTALLATION ................................................ 122 . CHECKING PROCEDURE .............................. 140 .
REFRIGERANT LINES .......................................... 123 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 142 .
HFC-134a (R-134a) Service Procedure .............. 123 . Compressor ......................................................... 142.
SETTING OF SERVICE TOOLS AND EQUIP- Lubricant .............................................................. 142
.
MENT ............................................................... 123
. Refrigerant ........................................................... 142
.
Components ........................................................ 125
. Engine Idling Speed ............................................ 142 .
Removal and Installation of Compressor ............ 125 . Belt Tension ......................................................... 142
.
Revision: 2006 November ATC-3 2007 350Z
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" NJS000D2
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 NJS000D3
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.
Precautions for Procedures without Cowl Top Cover NJS000CP
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
PIIB3706J
Revision: 2006 November ATC-4 2007 350Z
PRECAUTIONS
Precautions for Working with HFC-134a (R-134a) NJS00003
A
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 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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