Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Altima 2006-2009 Approved TB Nissan Altima 2006 atc
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J AIR CONDITIONER
A
B
SECTION
AUTOMATIC AIR CONDITIONER C
D
E
CONTENTS
PRECAUTIONS ......................................................... 4 . System Construction ............................................. 22
. F
Precautions for Supplemental Restraint System OPERATION ...................................................... 22
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- TRANSMISSION DATA AND TRANSMISSION
SIONER" ................................................................. 4. ORDER .............................................................. 23
. G
Precautions for Working with HFC-134a (R-134a) 4 ..... AIR MIX DOOR CONTROL (AUTOMATIC TEM-
Contaminated Refrigerant ....................................... 4 . PERATURE CONTROL) .................................... 23 .
General Refrigerant Precautions ............................. 5 . FAN SPEED CONTROL .................................... 24 .
H
Precautions for Leak Detection Dye ........................ 5 . INTAKE DOOR CONTROL ................................ 24 .
A/C Identification Label ........................................... 5 . MODE DOOR CONTROL .................................. 24 .
Precautions for Refrigerant Connection .................. 5 . MAGNET CLUTCH CONTROL .......................... 24 .
FEATURES OF NEW TYPE REFRIGERANT Overview of Control system ................................... 24 . I
CONNECTION ..................................................... 6 . Control Operation .................................................. 25
.
O-RING AND REFRIGERANT CONNECTION..... 7 AUTO SWITCH .................................................. 26.
Precautions for Servicing Compressor .................. 10 . TEMPERATURE DIAL (POTENTIO TEMPERA- ATC
Precautions for Service Equipment ....................... 10 . TURE CONTROL) .............................................. 26 .
RECOVERY/RECYCLING EQUIPMENT ........... 10 . FAN AUTO SWITCH .......................................... 26 .
ELECTRONIC LEAK DETECTOR ..................... 10 . FAN DIAL/OFF SWITCH .................................... 26 .
K
VACUUM PUMP .................................................11 . RECIRCULATION () SWITCH ............................ 26 .
MANIFOLD GAUGE SET ....................................11 . DEFROSTER SWITCH ...................................... 26 .
SERVICE HOSES ...............................................11 . MODE DIAL ........................................................ 26
.
SERVICE COUPLERS ....................................... 12 . REAR WINDOW DEFOGGER SWITCH ............ 26 . L
REFRIGERANT WEIGHT SCALE ..................... 12 . Discharge Air Flow ................................................ 27
.
CHARGING CYLINDER ..................................... 12 . System Description ................................................ 28
.
PREPARATION ........................................................ 13 . SWITCHES AND THEIR CONTROL FUNCTION 28 ... M
Special Service Tools ............................................ 13 . CAN Communication System Description ............. 28 .
HFC-134a (R-134a) Service Tools and Equipment 13 ... TROUBLE DIAGNOSIS ........................................... 29 .
Commercial Service Tools ..................................... 15 . How to Perform Trouble Diagnoses for Quick and
REFRIGERATION SYSTEM .................................... 17 . Accurate Repair ..................................................... 29
.
Refrigerant Cycle .................................................. 17 . WORK FLOW ..................................................... 29
.
REFRIGERANT FLOW ...................................... 17 . SYMPTOM TABLE ............................................. 29 .
Refrigerant System Protection .............................. 17 . Component Parts and Harness Connector Location 30 ...
REFRIGERANT PRESSURE SENSOR ............ 17 . ENGINE COMPARTMENT ................................. 30 .
PRESSURE RELIEF VALVE ............................. 17 . PASSENGER COMPARTMENT ........................ 32 .
Component Layout ................................................ 18 . Circuit Diagram ...................................................... 33
.
OIL ........................................................................... 19
. Wiring Diagram -- A/C,A -- .................................. 34 .
Maintenance of Oil Quantity in Compressor ......... 19 . Front Air Control Terminals and Reference Value... 38
OIL ..................................................................... 19
. INSPECTION OF FRONT AIR CONTROL ......... 38 .
CHECKING AND ADJUSTING .......................... 19 . FRONT AIR CONTROL HARNESS CONNEC-
AIR CONDITIONER CONTROL .............................. 22 . TOR TERMINAL LAYOUT .................................. 38 .
Overview Air Conditioner LAN Control System ..... 22 . FRONT AIR CONTROL INSPECTION TABLE ... 38
Revision: July 2005 ATC-1 2006 Altima
Operational Check ................................................. 40 . DIAGNOSTIC PROCEDURE ..............................80 .
CONDITIONS: .................................................... 40 . COMPONENT INSPECTION ..............................82 .
PROCEDURE: .................................................... 40 . Intake Sensor Circuit ..............................................83
.
Power Supply and Ground Circuit for Front Air Con- COMPONENT DESCRIPTION ...........................83 .
trol .......................................................................... 42
. DIAGNOSTIC PROCEDURE ..............................83 .
COMPONENT DESCRIPTION ........................... 42 . CONTROL UNIT .......................................................86
.
DIAGNOSTIC PROCEDURE ............................. 42 . Removal and Installation ........................................86
.
LAN System Circuit ............................................... 43 . FRONT AIR CONTROL ......................................86 .
DIAGNOSTIC PROCEDURE ............................. 44 . AMBIENT SENSOR .................................................87 .
Mode Door Motor Circuit ....................................... 47 . Removal and Installation ........................................87
.
INSPECTION FLOW .......................................... 47 . REMOVAL ...........................................................87
.
SYSTEM DESCRIPTION ................................... 48 . INSTALLATION ...................................................87
.
COMPONENT DESCRIPTION ........................... 49 . IN-VEHICLE SENSOR .............................................88 .
DIAGNOSTIC PROCEDURE ............................. 49 . Removal and Installation ........................................88
.
Air Mix Door Motor Circuit ..................................... 50 . REMOVAL ...........................................................88
.
INSPECTION FLOW .......................................... 50 . INSTALLATION ...................................................88
.
SYSTEM DESCRIPTION ................................... 51 . SUNLOAD SENSOR ................................................89 .
COMPONENT DESCRIPTION ........................... 52 . Removal and Installation ........................................89
.
DIAGNOSTIC PROCEDURE ............................. 52 . REMOVAL ...........................................................89
.
Intake Door Motor Circuit ....................................... 53 . INSTALLATION ...................................................89
.
INSPECTION FLOW .......................................... 53 . INTAKE SENSOR .....................................................90
.
SYSTEM DESCRIPTION ................................... 54 . Removal and Installation ........................................90
.
COMPONENT DESCRIPTION ........................... 55 . REMOVAL ...........................................................90
.
DIAGNOSTIC PROCEDURE ............................. 55 . INSTALLATION ...................................................90
.
Blower Motor Circuit .............................................. 56 . BLOWER UNIT .........................................................91
.
INSPECTION FLOW .......................................... 56 . Removal and Installation ........................................91
.
SYSTEM DESCRIPTION ................................... 56 . REMOVAL ...........................................................91
.
COMPONENT DESCRIPTION ........................... 58 . INSTALLATION ...................................................91
.
DIAGNOSTIC PROCEDURE ............................. 58 . BLOWER MOTOR ....................................................92 .
COMPONENT INSPECTION ............................. 61 . Removal and Installation ........................................92
.
Magnet Clutch Circuit ............................................ 62 . REMOVAL ...........................................................92
.
INSPECTION FLOW .......................................... 62 . INSTALLATION ...................................................92
.
SYSTEM DESCRIPTION ................................... 63 . IN-CABIN MICROFILTER .........................................93 .
DIAGNOSTIC PROCEDURE ............................. 63 . Removal and Installation ........................................93
.
COMPONENT INSPECTION ............................. 65 . FUNCTION .........................................................93
.
Insufficient Cooling ................................................ 66 . REPLACEMENT TIMING ...................................93 .
INSPECTION FLOW .......................................... 66 . REPLACEMENT PROCEDURES .......................93 .
PERFORMANCE TEST ANALYSIS ................... 67 . HEATER & COOLING UNIT ASSEMBLY ................94 .
PERFORMANCE CHART .................................. 69 . Removal and Installation ........................................94
.
TROUBLE DIAGNOSIS FOR ABNORMAL REMOVAL ...........................................................94
.
PRESSURE ........................................................ 69 . INSTALLATION ...................................................94
.
Insufficient Heating ................................................ 73 . HEATER CORE ........................................................95
.
INSPECTION FLOW .......................................... 73 . Removal and Installation ........................................95
.
Noise ..................................................................... 74
. REMOVAL ...........................................................95
.
INSPECTION FLOW .......................................... 74 . INSTALLATION ...................................................95
.
Ambient Sensor Circuit .......................................... 75 . INTAKE DOOR MOTOR ...........................................96 .
COMPONENT DESCRIPTION ........................... 75 . Removal and Installation ........................................96
.
AMBIENT TEMPERATURE INPUT PROCESS... 75 REMOVAL ...........................................................96
.
DIAGNOSTIC PROCEDURE ............................. 75 . INSTALLATION ...................................................96
.
COMPONENT INSPECTION ............................. 77 . MODE DOOR MOTOR .............................................97 .
In-vehicle Sensor Circuit ........................................ 77 . Removal and Installation ........................................97
.
COMPONENT DESCRIPTION ........................... 77 . REMOVAL ...........................................................97
.
DIAGNOSTIC PROCEDURE ............................. 78 . INSTALLATION ...................................................97
.
COMPONENT INSPECTION ............................. 79 . AIR MIX DOOR MOTOR ..........................................98 .
Sunload Sensor Circuit .......................................... 80 . Removal and Installation ........................................98
.
COMPONENT DESCRIPTION ........................... 80 . REMOVAL ...........................................................98
.
SUNLOAD INPUT PROCESS ............................ 80 . INSTALLATION ...................................................98
.
Revision: July 2005 ATC-2 2006 Altima
FAN CONTROL AMPLIFIER ................................... 99 . REMOVAL .........................................................111 .
Removal and Installation ....................................... 99 . INSTALLATION .................................................111 . A
REMOVAL .......................................................... 99 . Removal and Installation for High-pressure Pipe ..111
INSTALLATION .................................................. 99 . REMOVAL .........................................................111 .
DUCTS AND GRILLES ......................................... 100 . INSTALLATION .................................................111 . B
Removal and Installation ..................................... 100 . Removal and Installation for Refrigerant Pressure
REMOVAL ........................................................ 100 . Sensor ................................................................. 112
.
INSTALLATION ................................................ 101 . REMOVAL ........................................................ 112 .
REFRIGERANT LINES .......................................... 102 . INSTALLATION ................................................ 112 . C
HFC-134a (R-134a) Service Procedure .............. 102 . Removal and Installation for Condenser ............. 112 .
SETTING OF SERVICE TOOLS AND EQUIP- REMOVAL ........................................................ 112 .
MENT ............................................................... 102
. INSTALLATION ................................................ 113 . D
Components ........................................................ 104 . Removal and Installation for Evaporator ............. 113 .
Removal and Installation for Compressor -- REMOVAL ........................................................ 113 .
QR25DE Models ................................................. 106 . INSTALLATION ................................................ 114 . E
REMOVAL ........................................................ 106 . Removal and Installation for Expansion Valve ..... 114 .
INSTALLATION ................................................ 106 . REMOVAL ........................................................ 114 .
Removal and Installation for Compressor -- INSTALLATION ................................................ 114 .
VQ35DE Models ................................................. 107 . Checking for Refrigerant Leaks ........................... 115 . F
REMOVAL ........................................................ 107 . Checking System for Leaks Using the Fluorescent
INSTALLATION ................................................ 107 . Leak Detector ...................................................... 115
.
Removal and Installation for Compressor Clutch . 107 Dye Injection ........................................................ 115
. G
REMOVAL ........................................................ 107 . Electronic Refrigerant Leak Detector ................... 116 .
INSPECTION AFTER REMOVAL .................... 109 . PRECAUTIONS FOR HANDLING THE LEAK
INSTALLATION ................................................ 109 . DETECTOR ...................................................... 116 . H
INSPECTION AFTER INSTALLATION .............110 . CHECKING PROCEDURE .............................. 116 .
BREAK-IN OPERATION ...................................110 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 119 .
Removal and Installation for Low-pressure Flexible Service Data and Specifications (SDS) ............... 119 .
I
Hose ..................................................................... 111
. COMPRESSOR ............................................... 119 .
REMOVAL ......................................................... 111 . LUBRICANT ..................................................... 119 .
INSTALLATION ................................................. 111 . REFRIGERANT ................................................ 119 .
Removal and Installation for High-pressure Flexible ENGINE IDLING SPEED ................................. 119 . ATC
Hose ..................................................................... 111
. BELT TENSION ................................................ 119 .
K
L
M
Revision: July 2005 ATC-3 2006 Altima
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EJS002PJ
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 Working with HFC-134a (R-134a) EJS002PK
WARNING:
q CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. If the refrigerants
are mixed compressor failure is likely to occur. Refer ATC-4, "Contaminated Refrigerant" . To
determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use Refrigerant
Recovery/Recycling Recharging equipment and Refrigerant Identifier.
q Use only specified oil for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components.
If oil other than that specified is used, compressor failure is likely to occur.
q The specified HFC-134a (R-134a) oil rapidly absorbs moisture from the atmosphere. The following
handling precautions must be observed:
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