Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Armada 2004-2009 Approved Nissan Armada 2004 ATC
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J AIR CONDITIONER
A
B
SECTION
AUTOMATIC AIR CONDITIONER C
D
E
CONTENTS
PRECAUTIONS ......................................................... 5
. LUBRICANT ............................................................. 22
. F
Precautions for Supplemental Restraint System Maintenance of Lubricant Quantity in Compressor 22 ...
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- LUBRICANT ....................................................... 22.
SIONER" ................................................................. 5
. CHECKING AND ADJUSTING ........................... 22 . G
Precautions for Working with HFC-134a (R-134a) 5 ..... AIR CONDITIONER CONTROL .............................. 24 .
Contaminated Refrigerant ....................................... 5 . Description ............................................................. 24
.
General Refrigerant Precautions ............................. 6 . Operation ............................................................... 24
.
H
Precautions for Leak Detection Dye ........................ 6 . AIR MIX DOORS CONTROL ............................. 24 .
A/C Identification Label ........................................... 7
. BLOWER SPEED CONTROL ............................ 24 .
Precautions for Refrigerant Connection .................. 7 . INTAKE DOOR CONTROL ................................ 24 .
FEATURES OF NEW TYPE REFRIGERANT MODE DOOR CONTROL .................................. 24 . I
CONNECTION ..................................................... 7. DEFROSTER DOOR CONTROL ....................... 24 .
O-RING AND REFRIGERANT CONNECTION..... 8 MAGNET CLUTCH CONTROL .......................... 25 .
Precautions for Servicing Compressor ...................11 . SELF-DIAGNOSTIC SYSTEM ........................... 25 . ATC
Precautions for Service Equipment ........................11 . Description of Control System ............................... 26 .
RECOVERY/RECYCLING EQUIPMENT ............11 . Control Operation .................................................. 26
.
ELECTRONIC LEAK DETECTOR ......................11 . DISPLAY SCREEN ............................................. 27 .
K
VACUUM PUMP ................................................ 12 . AUTO SWITCH .................................................. 27 .
MANIFOLD GAUGE SET ................................... 12 . TEMPERATURE SWITCH (TEMPERATURE
SERVICE HOSES .............................................. 12 . CONTROL) (DRIVER SIDE) .............................. 27 .
SERVICE COUPLERS ....................................... 13 . TEMPERATURE SWITCH (TEMPERATURE L
REFRIGERANT WEIGHT SCALE ..................... 13 . CONTROL) (PASSENGER SIDE) ...................... 27 .
CHARGING CYLINDER ..................................... 13 . TEMPERATURE SWITCH (TEMPERATURE
Wiring Diagrams and Trouble Diagnosis ............... 13 . AND MODE CONTROL) (REAR) ....................... 27 . M
PREPARATION ........................................................ 14
. RECIRCULATION () SWITCH ............................ 27 .
Special Service Tools ............................................ 14
. DEFROSTER (DEF) SWITCH ............................ 27 .
HFC-134a (R-134a) Service Tools and Equipment 14 ... REAR WINDOW DEFOGGER SWITCH ............ 27 .
Commercial Service Tools ..................................... 16 . OFF SWITCH ..................................................... 27 .
REFRIGERATION SYSTEM .................................... 18 . A/C SWITCH ...................................................... 27.
Refrigerant Cycle .................................................. 18
. MODE SWITCH ................................................. 27 .
REFRIGERANT FLOW ...................................... 18 . FRONT BLOWER CONTROL SWITCH ............. 27 .
Refrigerant System Protection .............................. 18 . TEMPERATURE SWITCH (TEMPERATURE
REFRIGERANT PRESSURE SENSOR ............ 18 . AND MODE CONTROL) .................................... 28 .
PRESSURE RELIEF VALVE ............................. 19 . REAR BLOWER CONTROL SWITCH ............... 28 .
Component Layout ................................................ 20. Discharge Air Flow ................................................ 29.
FRONT REFRIGERATION SYSTEM ................. 20 . FRONT ............................................................... 29
.
REAR REFRIGERATION SYSTEM ................... 21 . REAR ................................................................. 29
.
System Description (Front) .................................... 30 .
SWITCHES AND THEIR CONTROL FUNCTION 30 ...
System Description (Rear) .................................... 31 .
Revision: January 2005 ATC-1 2004 Pathfinder Armada
SWITCHES AND THEIR CONTROL FUNCTION 31 ... COMPONENT DESCRIPTION ...........................76 .
CAN Communication System Description ............. 32 . DIAGNOSTIC PROCEDURE FOR INTAKE
TROUBLE DIAGNOSIS ........................................... 33 . DOOR MOTOR ...................................................76 .
CONSULT-II ........................................................... 33 . Defroster Door Motor Circuit ..................................77 .
CONSULT-II BASIC OPERATION ...................... 33 . SYMPTOM: .........................................................77 .
DATA MONITOR ................................................. 34 . INSPECTION FLOW ...........................................77 .
How to Perform Trouble Diagnosis for Quick and SYSTEM DESCRIPTION ....................................78 .
Accurate Repair ..................................................... 35 . COMPONENT DESCRIPTION ...........................78 .
WORK FLOW ..................................................... 35 . DIAGNOSTIC PROCEDURE FOR
SYMPTOM TABLE ............................................. 35 . DEFROSTER DOOR MOTOR ............................79 .
Component Parts and Harness Connector Location 37 ... Front Blower Motor Circuit .....................................81 .
ENGINE COMPARTMENT ................................. 37 . INSPECTION FLOW ...........................................81 .
FRONT PASSENGER COMPARTMENT ........... 38 . SYSTEM DESCRIPTION ....................................82 .
REAR PASSENGER COMPARTMENT .............. 39 . COMPONENT DESCRIPTION ...........................83 .
Schematic .............................................................. 40 . DIAGNOSTIC PROCEDURE FOR BLOWER
Wiring Diagram --A/C-- ........................................ 41 . MOTOR ...............................................................83.
Front Air Control Terminals and Reference Value... 51 COMPONENT INSPECTION ..............................87 .
PIN CONNECTOR TERMINAL LAYOUT ........... 51 . Rear Blower Motor Circuit ......................................88 .
TERMINALS AND REFERENCE VALUE FOR INSPECTION FLOW ...........................................88 .
FRONT AIR CONTROL ...................................... 51 . SYSTEM DESCRIPTION ....................................89 .
A/C System Self-diagnosis Function ..................... 53 . DIAGNOSTIC PROCEDURE FOR REAR
DESCRIPTION ................................................... 53 . BLOWER MOTOR ..............................................89 .
Operational Check (Front) ..................................... 55 . COMPONENT INSPECTION ..............................97 .
CHECKING MEMORY FUNCTION .................... 55 . Rear Air Control Circuit ..........................................99 .
CHECKING BLOWER ........................................ 55 . INSPECTION FLOW ...........................................99 .
CHECKING DISCHARGE AIR ........................... 56 . SYSTEM DESCRIPTION .................................. 100 .
CHECKING RECIRCULATION ........................... 56 . DIAGNOSTIC PROCEDURE FOR REAR AIR
CHECKING TEMPERATURE DECREASE ........ 56 . CONTROL ........................................................ 100 .
CHECKING TEMPERATURE INCREASE ......... 57 . Magnet Clutch Circuit ........................................... 102 .
CHECK A/C SWITCH ......................................... 57 . INSPECTION FLOW ......................................... 102 .
CHECKING AUTO MODE .................................. 57 . SYSTEM DESCRIPTION .................................. 103 .
Operational Check (Rear) ...................................... 58 . DIAGNOSTIC PROCEDURE FOR MAGNET
CHECKING BLOWER ........................................ 58 . CLUTCH ........................................................... 103 .
CHECKING TEMPERATURE DECREASE ........ 58 . COMPONENT INSPECTION ............................ 107 .
CHECKING TEMPERATURE INCREASE ......... 58 . Insufficient Cooling ............................................... 108 .
Power Supply and Ground Circuit for Front Air Con- INSPECTION FLOW ......................................... 108 .
trol .......................................................................... 59
. PERFORMANCE TEST DIAGNOSES ............. 109 .
INSPECTION FLOW .......................................... 59 . PERFORMANCE CHART ................................. 111 .
COMPONENT DESCRIPTION ........................... 60 . TROUBLE DIAGNOSES FOR UNUSUAL PRES-
DIAGNOSTIC PROCEDURE FOR A/C SYSTEM 60 ... SURE ................................................................ 112
.
Mode Door Motor Circuit ....................................... 62 . Insufficient Heating .............................................. 115 .
INSPECTION FLOW .......................................... 62 . INSPECTION FLOW ......................................... 115 .
SYSTEM DESCRIPTION ................................... 63 . Noise .................................................................... 116
.
COMPONENT DESCRIPTION ........................... 64 . INSPECTION FLOW ......................................... 116 .
DIAGNOSTIC PROCEDURE FOR MODE Self-diagnosis ...................................................... 118.
DOOR MOTOR .................................................. 64 . INSPECTION FLOW ......................................... 118 .
Air Mix Door Motor Circuit ..................................... 66 . Memory Function ................................................. 119 .
INSPECTION FLOW .......................................... 66 . INSPECTION FLOW ......................................... 119 .
SYSTEM DESCRIPTION ................................... 67 . Water Valve Circuit ............................................... 119 .
COMPONENT DESCRIPTION ........................... 68 . COMPONENT DESCRIPTION ......................... 119 .
DIAGNOSTIC PROCEDURE FOR AIR MIX DIAGNOSTIC PROCEDURE FOR WATER
DOOR MOTOR (DRIVER) .................................. 68 . VALVE ............................................................... 120
.
DIAGNOSTIC PROCEDURE FOR AIR MIX COMPONENT INSPECTION ............................ 122 .
DOOR MOTOR (PASSENGER) ......................... 70 . Ambient Sensor Circuit ........................................ 123 .
DIAGNOSTIC PROCEDURE FOR AIR MIX COMPONENT DESCRIPTION ......................... 123 .
DOOR MOTOR (REAR) ..................................... 72 . AMBIENT TEMPERATURE INPUT PROCESS .123
Intake Door Motor Circuit ....................................... 74 . DIAGNOSTIC PROCEDURE FOR AMBIENT
INSPECTION FLOW .......................................... 74 . SENSOR ........................................................... 123 .
SYSTEM DESCRIPTION ................................... 75 . COMPONENT INSPECTION ............................ 125 .
Revision: January 2005 ATC-2 2004 Pathfinder Armada
In-vehicle Sensor Circuit ..................................... 126 . INTAKE DOOR MOTOR ........................................ 149 .
COMPONENT DESCRIPTION ........................ 126 . Removal and Installation ..................................... 149 . A
DIAGNOSTIC PROCEDURE FOR IN-VEHICLE REMOVAL ........................................................ 149 .
SENSOR .......................................................... 127 . INSTALLATION ................................................ 149 .
COMPONENT INSPECTION ........................... 129 . MODE DOOR MOTOR ........................................... 150 . B
Optical Sensor Circuit ......................................... 129 . Removal and Installation ..................................... 150 .
COMPONENT DESCRIPTION ........................ 129 . REMOVAL ........................................................ 150 .
OPTICAL INPUT PROCESS ........................... 129 . INSTALLATION ................................................ 150 .
DIAGNOSTIC PROCEDURE FOR OPTICAL AIR MIX DOOR MOTOR ........................................ 151 . C
SENSOR .......................................................... 130 . Components ........................................................ 151 .
Intake Sensor Circuit ........................................... 131 . Removal and Installation ..................................... 151 .
COMPONENT DESCRIPTION ........................ 131 . FRONT AIR MIX DOOR MOTOR (DRIVER) .... 151 . D
DIAGNOSTIC PROCEDURE FOR INTAKE SEN- FRONT AIR MIX DOOR MOTOR (PASSENGER) 152 .
SOR ................................................................. 131
. REAR AIR MIX DOOR MOTOR ....................... 152 .
COMPONENT INSPECTION ........................... 132 . VARIABLE BLOWER CONTROL .......................... 153 . E
CONTROL UNIT .................................................... 133 . Removal and Installation ..................................... 153 .
Removal and Installation ..................................... 133 . REMOVAL ........................................................ 153 .
FRONT AIR CONTROL ................................... 133 . INSTALLATION ................................................ 153 .
REAR AIR CONTROL ...................................... 133 . REAR BLOWER MOTOR RESISTOR ................... 154 . F
AMBIENT SENSOR ............................................... 134 . Removal and Installation ..................................... 154 .
Removal and Installation ..................................... 134 . REMOVAL ........................................................ 154 .
REMOVAL ........................................................ 134 . INSTALLATION ................................................ 154 . G
INSTALLATION ................................................ 134 . DUCTS AND GRILLES .......................................... 155 .
IN-VEHICLE SENSOR ........................................... 135 . Components ........................................................ 155 .
Removal and Installation ..................................... 135 . Removal and Installation ..................................... 158 . H
REMOVAL ........................................................ 135 . CENTER CONSOLE HEAT DUCT AND REAR
INSTALLATION ................................................ 135 . FINISHER ASSEMBLY GRILLE ....................... 158 .
OPTICAL SENSOR ............................................... 136 . DEFROSTER NOZZLE .................................... 158 .
I
Removal and Installation ..................................... 136 . RH AND LH SIDE DEMISTER DUCT .............. 158 .
INTAKE SENSOR .................................................. 137 . RH AND LH VENTILATOR DUCT .................... 158 .
Removal and Installation ..................................... 137 . CENTER VENTILATOR DUCT ........................ 158 .
REMOVAL ........................................................ 137 . FLOOR DUCT .................................................. 158 . ATC
INSTALLATION ................................................ 137 . REAR OVERHEAD DUCTS ............................. 158 .
BLOWER MOTOR ................................................. 138 . REAR FLOOR DUCT ....................................... 159 .
Components ........................................................ 138 . GRILLES .......................................................... 159 . K
Removal and Installation ..................................... 138 . REFRIGERANT LINES .......................................... 160 .
FRONT BLOWER MOTOR .............................. 138 . HFC-134a (R-134a) Service Procedure .............. 160 .
REAR BLOWER MOTOR ................................ 139 . SETTING OF SERVICE TOOLS AND EQUIP- L
IN-CABIN MICROFILTER ...................................... 140 . MENT ............................................................... 160
.
Removal and Installation ..................................... 140 . Components ........................................................ 162 .
FUNCTION ....................................................... 140 . Removal and Installation for Compressor ........... 164 .
REPLACEMENT TIMING ................................. 140 . REMOVAL ........................................................ 164 . M
REPLACEMENT PROCEDURE ...................... 140 . INSTALLATION ................................................ 165 .
HEATER & COOLING UNIT ASSEMBLY ............. 142 . Removal and Installation for Compressor Clutch . 165
Components ........................................................ 142 . REMOVAL ........................................................ 165 .
Removal and Installation ..................................... 143 . INSPECTION ................................................... 166 .
FRONT HEATER AND COOLING UNIT ASSEM- INSTALLATION ................................................ 166 .
BLY ................................................................... 143
. BREAK-IN OPERATION ................................... 168 .
REAR HEATER AND COOLING UNIT ASSEM- Removal and Installation for Low-pressure Flexible
BLY ................................................................... 144
. Hose .................................................................... 168
.
HEATER CORE ..................................................... 145 . REMOVAL ........................................................ 168 .
Components ........................................................ 145 . INSTALLATION ................................................ 168 .
Removal and Installation ..................................... 146 . Removal and Installation for High-pressure Flexible
FRONT HEATER CORE .................................. 146 . Hose .................................................................... 168
.
REAR HEATER CORE .................................... 147 . REMOVAL ........................................................ 168 .
DEFROSTER DOOR MOTOR ............................... 148 . INSTALLATION ................................................ 168 .
Removal and Installation ..................................... 148 . Removal and Installation for High-pressure Pipe . 168
REMOVAL ........................................................ 148 . REMOVAL ........................................................ 168 .
INSTALLATION ................................................ 148 . INSTALLATION ................................................ 168 .
Revision: January 2005 ATC-3 2004 Pathfinder Armada
Removal and Installation for Low-pressure Pipe . 169 Removal and Installation for Rear Expansion Valve.173
REMOVAL ........................................................ 169 . REMOVAL ......................................................... 173
.
INSTALLATION ................................................. 169 . INSTALLATION ................................................. 174 .
Removal and Installation for Refrigerant Pressure Checking for Refrigerant Leaks ........................... 174 .
Sensor ................................................................. 169
. Checking System for Leaks Using the Fluorescent
REMOVAL ........................................................ 169 . Dye Leak Detector ............................................... 174.
INSTALLATION ................................................. 169 . Dye Injection ........................................................ 174
.
Removal and Installation for Condenser .............. 169 . Electronic Refrigerant Leak Detector ................... 175 .
REMOVAL ........................................................ 169 . PRECAUTIONS FOR HANDLING LEAK
INSTALLATION ................................................. 170 . DETECTOR ...................................................... 175.
Removal and Installation for Front Evaporator .... 171 . CHECKING PROCEDURE ............................... 176 .
REMOVAL ........................................................ 171 . SERVICE DATA AND SPECIFICATIONS (SDS) ... 178 .
INSTALLATION ................................................. 172 . Service Data and Specifications (SDS) ............... 178 .
Removal and Installation for Rear Evaporator ..... 172 . COMPRESSOR ................................................ 178 .
REMOVAL ........................................................ 173 . LUBRICANT ...................................................... 178
.
INSTALLATION ................................................. 173 . REFRIGERANT ................................................ 178 .
Removal and Installation for Front Expansion Valve 173 . ENGINE IDLING SPEED .................................. 178 .
REMOVAL ........................................................ 173 . BELT TENSION ................................................ 178 .
INSTALLATION ................................................. 173 .
Revision: January 2005 ATC-4 2004 Pathfinder Armada
PRECAUTIONS
PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EJS001UG
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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 C
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: D
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. E
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. F
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.
G
Precautions for Working with HFC-134a (R-134a) EJS001UH
WARNING:
q CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. If the refrigerants H
are mixed compressor failure is likely to occur. Refer ATC-5, "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. I
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- ATC
lowing handling precautions must be observed:
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