Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Quest 2004-2009 Approved Nissan Quest 2008 MTC
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AIR CONDITIONER
A
SECTION
MANUAL AIR CONDITIONER
MTC B
C
D
E
CONTENTS
SERVICE INFORMATION ........................... 3
. Component Parts and Harness Connector Loca- F
tion ..........................................................................30
.
PRECAUTIONS .................................................. 3
. Schematic ...............................................................34.
Precaution for Supplemental Restraint System Wiring Diagram - A/C,M - .......................................35 . G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Front Air Control Terminal and Reference Value ....43
SIONER" .................................................................. 3
. A/C System Self-Diagnosis Function ......................44 .
Precaution for Working with HFC-134a (R-134a)...... 3 Operational Check (Front) ......................................45 .
H
Contaminated Refrigerant ........................................ 3 . Operational Check (Rear) .......................................47 .
General Refrigerant Precaution ............................... 4 . Power Supply and Ground Circuit for Front Air
Precaution for Leak Detection Dye .......................... 4 . Control ....................................................................48
.
A/C Identification Label ............................................ 4
. Mode Door Motor Circuit ........................................50 . I
Precaution for Refrigerant Connection ..................... 4 . Air Mix Door Motor Circuit ......................................54 .
Precaution for Service of Compressor ..................... 8 . Intake Door Motor Circuit ........................................63 .
Precaution for Service Equipment ............................ 9 . Defroster Door Motor Circuit ...................................67 . MTC
Front Blower Motor Circuit ......................................69 .
PREPARATION .................................................11
. Rear Blower Motor Circuit ......................................75 .
Special Service Tool .............................................. 11
. Rear Temperature Control Circuit ..........................84 .
HFC-134a (R-134a) Service Tool and Equipment 11 .... K
Magnet Clutch Circuit .............................................90 .
Commercial Service Tool ....................................... 13
. Insufficient Cooling .................................................94 .
REFRIGERATION SYSTEM .............................15
. Insufficient Heating ............................................... 101 .
Heater Pump Circuit ............................................. 102 . L
Refrigerant Cycle ................................................... 15
.
Noise .................................................................... 105
.
Refrigerant System Protection ............................... 15 .
Self-Diagnosis ...................................................... 107 .
Component Part Location ...................................... 16.
Ambient Sensor Circuit ......................................... 108 . M
OIL .....................................................................19
. Intake Sensor Circuit ............................................ 110 .
Maintenance of Oil Quantity in Compressor .......... 19
.
CONTROL UNIT .............................................. 113
Removal and Installation ...................................... 113
. N
AIR CONDITIONER CONTROL ........................21
.
Description ............................................................. 21
.
Operation ............................................................... 21
.
AMBIENT SENSOR ........................................ 115
Removal and Installation ...................................... 115
. O
Description of Control System ................................ 22 .
Control Operation ................................................... 23
. INTAKE SENSOR ........................................... 116
Discharge Air Flow ................................................. 25
. Removal and Installation ...................................... 116
.
System Description ................................................ 26
. P
CAN Communication System Description .............. 26 . BLOWER MOTOR .......................................... 118
Component ........................................................... 118
.
TROUBLE DIAGNOSIS ....................................27
. Removal and Installation ...................................... 119.
CONSULT-III Function (HVAC) .............................. 27 .
CONSULT-III Function (BCM) ................................ 28 . IN-CABIN MICROFILTER ............................... 120
How to Perform Trouble Diagnosis for Quick and Removal and Installation ...................................... 120
.
Accurate Repair ..................................................... 29
.
Revision: August 2007 MTC-1 2008 Quest
HEATER & COOLING UNIT ASSEMBLY ...... 121
. REFRIGERANT LINES .................................... 143
.
Component ...........................................................121
. HFC-134a (R-134a) Service Procedure ............... 143 .
Removal and Installation ......................................122 . Component .......................................................... 145 .
Removal and Installation for Compressor ............ 147 .
HEATER CORE .............................................. 124
. Removal and Installation for Compressor Clutch . 148
Component ...........................................................124
. Removal and Installation for Low-Pressure Flexi-
Removal and Installation ......................................125 . ble Hose ............................................................... 151
.
Removal and Installation for High-pressure Flexi-
HEATER PUMP .............................................. 127
.
ble Hose ............................................................... 151
.
Removal and Installation ......................................127
.
Removal and Installation for High-pressure Pipe . 151
DEFROSTER DOOR MOTOR ........................ 128
. Removal and Installation for High/Low-Pressure
Removal and Installation ......................................128
. Pipe ...................................................................... 152
.
Removal and Installation for Refrigerant Pressure
INTAKE DOOR MOTOR ................................. 129
. Sensor .................................................................. 155
.
Component ...........................................................129
. Removal and Installation for Condenser .............. 156 .
Removal and Installation ......................................130 . Removal and Installation for Front Evaporator .... 157 .
Removal and Installation for Rear Evaporator ..... 159 .
MODE DOOR MOTOR ................................... 132
. Removal and Installation for Front Expansion
Removal and Installation ......................................132
. Valve .................................................................... 160
.
Removal and Installation for Rear Expansion
AIR MIX DOOR MOTOR ................................. 134
.
Valve .................................................................... 160
.
Component ...........................................................134
.
Checking of Refrigerant Leaks ............................. 161 .
Removal and Installation ......................................134 .
Checking System for Leaks Using the Fluorescent
VARIABLE BLOWER CONTROL .................. 136
. Dye Leak Detector ............................................... 161 .
Component ...........................................................136
. Dye Injection ........................................................ 161.
Removal and Installation ......................................137 . Electronic Refrigerant Leak Detector ................... 162 .
DUCTS AND GRILLES ................................... 138
. SERVICE DATA AND SPECIFICATIONS
Component ...........................................................138
. (SDS) ............................................................... 165
.
Removal and Installation ......................................141 . Service Data and Specification (SDS) ................. 165
.
Revision: August 2007 MTC-2 2008 Quest
PRECAUTIONS
< SERVICE INFORMATION >
SERVICE INFORMATION A
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT B
PRE-TENSIONER" INFOID:0000000001718925
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along C
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. D
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING: E
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