Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Altima 2006-2009 Approved TB Nissan Altima 2006 mtc
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J AIR CONDITIONER
A
B
SECTION
MANUAL 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 ................................ 23 .
Contaminated Refrigerant ....................................... 4 . FAN SPEED CONTROL .................................... 24 .
General Refrigerant Precautions ............................. 5 . INTAKE DOOR CONTROL ................................ 24 .
H
Precautions for Leak Detection Dye ........................ 5 . MODE DOOR CONTROL .................................. 24 .
A/C Identification Label ........................................... 5 . MAGNET CLUTCH CONTROL .......................... 24 .
Precautions for Refrigerant Connection .................. 5 . Overview of Control system ................................... 24 .
FEATURES OF NEW TYPE REFRIGERANT Control Operation .................................................. 25
. I
CONNECTION ..................................................... 6 . AIR CONDITIONER (A/C) SWITCH ................... 26 .
O-RING AND REFRIGERANT CONNECTION..... 7 TEMPERATURE DIAL (POTENTIO TEMPERA-
Precautions for Servicing Compressor .................. 10 . TURE CONTROL) .............................................. 26 . MTC
Precautions for Service Equipment ....................... 10 . FAN DIAL/OFF SWITCH .................................... 26 .
RECOVERY/RECYCLING EQUIPMENT ........... 10 . RECIRCULATION () SWITCH ............................ 26 .
ELECTRONIC LEAK DETECTOR ..................... 10 . DEFROSTER SWITCH ...................................... 26 .
K
VACUUM PUMP .................................................11 . MODE DIAL ........................................................ 26
.
MANIFOLD GAUGE SET ....................................11 . REAR WINDOW DEFOGGER SWITCH ............ 26 .
SERVICE HOSES ...............................................11 . Discharge Air Flow ................................................ 27
.
SERVICE COUPLERS ....................................... 12 . System Description ................................................ 28
. L
REFRIGERANT WEIGHT SCALE ..................... 12 . SWITCHES AND THEIR CONTROL FUNCTION 28 ...
CHARGING CYLINDER ..................................... 12 . CAN Communication System Description ............. 28 .
PREPARATION ........................................................ 13 . TROUBLE DIAGNOSIS ........................................... 29 . M
Special Service Tools ............................................ 13 . How to Perform Trouble Diagnoses for Quick and
HFC-134a (R-134a) Service Tools and Equipment 13 ... Accurate Repair ..................................................... 29
.
Commercial Service Tools ..................................... 16 . WORK FLOW ..................................................... 29
.
REFRIGERATION SYSTEM .................................... 17 . SYMPTOM TABLE ............................................. 29 .
Refrigerant Cycle .................................................. 17 . Component Parts and Harness Connector Location 30 ...
REFRIGERANT FLOW ...................................... 17 . ENGINE COMPARTMENT ................................. 30 .
Refrigerant System Protection .............................. 17 . PASSENGER COMPARTMENT ........................ 32 .
REFRIGERANT PRESSURE SENSOR ............ 17 . Circuit Diagram ...................................................... 33
.
PRESSURE RELIEF VALVE ............................. 17 . Wiring Diagram -- HEATER -- ............................. 34 .
Component Layout ................................................ 18 . Wiring Diagram -- A/C,M -- .................................. 36 .
OIL ........................................................................... 19
. Front Air Control Terminals and Reference Value... 39
Maintenance of Oil Quantity in Compressor ......... 19 . INSPECTION OF FRONT AIR CONTROL ......... 39 .
OIL ..................................................................... 19
. FRONT AIR CONTROL HARNESS CONNEC-
CHECKING AND ADJUSTING .......................... 19 . TOR TERMINAL LAYOUT .................................. 39 .
AIR CONDITIONER CONTROL .............................. 22 . FRONT AIR CONTROL INSPECTION TABLE ... 39
Overview Air Conditioner LAN Control System ..... 22 . Operational Check ................................................. 41
.
Revision: July 2005 MTC-1 2006 Altima
CONDITIONS: .................................................... 41 . BLOWER MOTOR ....................................................78 .
PROCEDURE: .................................................... 41 . Removal and Installation ........................................78 .
Power Supply and Ground Circuit for Front Air Con- REMOVAL ...........................................................78 .
trol .......................................................................... 43
. INSTALLATION ...................................................78 .
COMPONENT DESCRIPTION ........................... 43 . IN-CABIN MICROFILTER .........................................79 .
DIAGNOSTIC PROCEDURE ............................. 43 . Removal and Installation ........................................79 .
LAN System Circuit ............................................... 45 . FUNCTION .........................................................79 .
DIAGNOSTIC PROCEDURE ............................. 45 . REPLACEMENT TIMING ...................................79 .
Mode Door Motor Circuit ....................................... 48 . REPLACEMENT PROCEDURES .......................79 .
INSPECTION FLOW .......................................... 48 . HEATER & COOLING UNIT ASSEMBLY ................80 .
SYSTEM DESCRIPTION ................................... 49 . Removal and Installation ........................................80 .
COMPONENT DESCRIPTION ........................... 49 . REMOVAL ...........................................................80 .
DIAGNOSTIC PROCEDURE ............................. 49 . INSTALLATION ...................................................80 .
Air Mix Door Motor Circuit ..................................... 50 . HEATER CORE ........................................................81 .
INSPECTION FLOW .......................................... 50 . Removal and Installation ........................................81 .
SYSTEM DESCRIPTION ................................... 51 . REMOVAL ...........................................................81 .
COMPONENT DESCRIPTION ........................... 51 . INSTALLATION ...................................................81 .
DIAGNOSTIC PROCEDURE ............................. 51 . INTAKE DOOR MOTOR ...........................................82 .
Intake Door Motor Circuit ....................................... 52 . Removal and Installation ........................................82 .
INSPECTION FLOW .......................................... 52 . REMOVAL ...........................................................82 .
SYSTEM DESCRIPTION ................................... 53 . INSTALLATION ...................................................82 .
COMPONENT DESCRIPTION ........................... 53 . MODE DOOR MOTOR .............................................83 .
DIAGNOSTIC PROCEDURE ............................. 53 . Removal and Installation ........................................83 .
Blower Motor Circuit .............................................. 54 . REMOVAL ...........................................................83 .
INSPECTION FLOW .......................................... 54 . INSTALLATION ...................................................83 .
SYSTEM DESCRIPTION ................................... 55 . AIR MIX DOOR MOTOR ..........................................84 .
COMPONENT DESCRIPTION ........................... 55 . Removal and Installation ........................................84 .
DIAGNOSTIC PROCEDURE ............................. 55 . REMOVAL ...........................................................84 .
COMPONENT INSPECTION ............................. 58 . INSTALLATION ...................................................84 .
Magnet Clutch Circuit ............................................ 59 . FAN CONTROL AMPLIFIER ....................................85 .
INSPECTION FLOW .......................................... 59 . Removal and Installation ........................................85 .
SYSTEM DESCRIPTION ................................... 60 . REMOVAL ...........................................................85 .
DIAGNOSTIC PROCEDURE ............................. 60 . INSTALLATION ...................................................85 .
COMPONENT INSPECTION ............................. 62 . DUCTS AND GRILLES ............................................86 .
Insufficient Cooling ................................................ 63 . Removal and Installation ........................................86 .
INSPECTION FLOW .......................................... 63 . REMOVAL ...........................................................86 .
PERFORMANCE TEST ANALYSIS ................... 64 . INSTALLATION ...................................................87 .
PERFORMANCE CHART .................................. 66 . REFRIGERANT LINES ............................................88 .
TROUBLE DIAGNOSIS FOR ABNORMAL HFC-134a (R-134a) Service Procedure .................88 .
PRESSURE ........................................................ 66 . SETTING OF SERVICE TOOLS AND EQUIP-
Insufficient Heating ................................................ 70 . MENT ..................................................................88
.
INSPECTION FLOW .......................................... 70 . Components ...........................................................90 .
Noise ..................................................................... 71
. Removal and Installation for Compressor --
INSPECTION FLOW .......................................... 71 . QR25DE Models ....................................................92 .
Intake Sensor Circuit ............................................. 72 . REMOVAL ...........................................................92 .
COMPONENT DESCRIPTION ........................... 72 . INSTALLATION ...................................................92 .
DIAGNOSTIC PROCEDURE ............................. 72 . Removal and Installation for Compressor --
CONTROL UNIT ....................................................... 75 . VQ35DE Models ....................................................93 .
Removal and Installation ....................................... 75 . REMOVAL ...........................................................93 .
FRONT AIR CONTROL ...................................... 75 . INSTALLATION ...................................................93 .
INTAKE SENSOR .................................................... 76 . Removal and Installation for Compressor Clutch ...93
Removal and Installation ....................................... 76 . REMOVAL ...........................................................93 .
REMOVAL .......................................................... 76 . INSPECTION AFTER REMOVAL .......................95 .
INSTALLATION ................................................... 76 . INSTALLATION ...................................................95 .
BLOWER UNIT ........................................................ 77 . INSPECTION AFTER INSTALLATION ...............96 .
Removal and Installation ....................................... 77 . BREAK-IN OPERATION .....................................96 .
REMOVAL .......................................................... 77 . Removal and Installation for Low-pressure Flexible
INSTALLATION ................................................... 77 . Hose .......................................................................97
.
REMOVAL ...........................................................97 .
Revision: July 2005 MTC-2 2006 Altima
INSTALLATION .................................................. 97 . Removal and Installation for Expansion Valve ..... 100 .
Removal and Installation for High-pressure Flexible REMOVAL ........................................................ 100
. A
Hose ...................................................................... 97
. INSTALLATION ................................................ 100 .
REMOVAL .......................................................... 97 . Checking for Refrigerant Leaks ........................... 101 .
INSTALLATION .................................................. 97 . Checking System for Leaks Using the Fluorescent B
Removal and Installation for High-pressure Pipe ... 97 Leak Detector ...................................................... 101
.
REMOVAL .......................................................... 97 . Dye Injection ........................................................ 101
.
INSTALLATION .................................................. 97 . Electronic Refrigerant Leak Detector ................... 102 .
Removal and Installation for Refrigerant Pressure PRECAUTIONS FOR HANDLING THE LEAK C
Sensor ................................................................... 98
. DETECTOR ...................................................... 102.
REMOVAL .......................................................... 98 . CHECKING PROCEDURE .............................. 102 .
INSTALLATION .................................................. 98 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 105 . D
Removal and Installation for Condenser ............... 98 . Service Data and Specifications (SDS) ............... 105 .
REMOVAL .......................................................... 98 . COMPRESSOR ............................................... 105 .
INSTALLATION .................................................. 99 . LUBRICANT ..................................................... 105. E
Removal and Installation for Evaporator ............... 99 . REFRIGERANT ................................................ 105 .
REMOVAL .......................................................... 99 . ENGINE IDLING SPEED ................................. 105 .
INSTALLATION ................................................ 100 . BELT TENSION ................................................ 105 .
F
G
H
I
MTC
K
L
M
Revision: July 2005 MTC-3 2006 Altima
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EJS002RO
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) EJS002RP
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 MTC-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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