Nissan Sentra (2007) Bedienungsanleitung
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MTC-1
MANUAL AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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SECTION MTC A
B
MTC
Revision: December 2006 2007 Sentra
PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Precautions for Working with HFC-134a (R-134a) ..... 4
Contaminated Refrigerant ........................................ 4
General Refrigerant Precautions .............................. 5
Precautions for Leak Detection Dye ......................... 5
A/C Identification Label ............................................ 5
Precautions for Refrigerant Connection ................... 5
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION ...................................................... 6
O-RING AND REFRIGERANT CONNECTION ..... 7
Precautions for Servicing Compressor ....................11
Precautions for Service Equipment .........................11
RECOVERY/RECYCLING EQUIPMENT .............11
ELECTRONIC LEAK DETECTOR .......................11
VACUUM PUMP ................................................. 12
MANIFOLD GAUGE SET .................................... 12
SERVICE HOSES ............................................... 12
SERVICE COUPLERS ........................................ 13
REFRIGERANT WEIGHT SCALE ...................... 13
CHARGING CYLINDER ...................................... 13
PREPARATION ......................................................... 14
Special Service Tools ............................................. 14
HFC-134a (R-134a) Service Tools and Equipment ... 14
Commercial Service Tools ...................................... 17
REFRIGERATION SYSTEM ..................................... 18
Refrigerant Cycle ................................................... 18
REFRIGERANT FLOW ....................................... 18
Refrigerant System Protection ............................... 18
REFRIGERANT PRESSURE SENSOR ............. 18
PRESSURE RELIEF VALVE ............................... 18
Component Layout ................................................. 19
OIL ............................................................................ 21
Maintenance of Oil Quantity in Compressor .......... 21
OIL ...................................................................... 21
CHECKING AND ADJUSTING ........................... 21
AIR CONDITIONER CONTROL ............................... 24
Overview Air Conditioner LAN Control System ...... 24
System Construction .............................................. 24
OPERATION ....................................................... 24
TRANSMISSION DATA AND TRANSMISSION
ORDER ............................................................... 25
AIR MIX DOOR CONTROL ................................. 25
BLOWER SPEED CONTROL ............................. 26
INTAKE DOOR CONTROL ................................. 26
MODE DOOR CONTROL ................................... 26
MAGNET CLUTCH CONTROL ........................... 26
Overview of Control system .................................... 26
Control Operation ................................................... 27
AIR CONDITIONER (A/C) SWITCH .................... 28
TEMPERATURE DIAL (POTENTIO TEMPERA-
TURE CONTROL) ............................................... 28
BLOWER CONTROL DIAL/OFF SWITCH .......... 28
RECIRCULATION () SWITCH ............................. 28
DEFROSTER SWITCH ....................................... 28
MODE DIAL ......................................................... 28
REAR WINDOW DEFOGGER SWITCH ............. 28
Discharge Air Flow ................................................. 29
System Description ................................................. 30
SWITCHES AND THEIR CONTROL FUNCTION ... 30
CAN Communication System Description .............. 30
TROUBLE DIAGNOSIS ............................................ 31
How to Perform Trouble Diagnoses for Quick and
Accurate Repair ...................................................... 31
WORK FLOW ...................................................... 31
SYMPTOM TABLE .............................................. 31
Component Parts and Harness Connector Location ... 32
ENGINE COMPARTMENT - QR25DE ................ 32
ENGINE COMPARTMENT - MR20DE ................ 33
PASSENGER COMPARTMENT ......................... 34
Circuit Diagram ....................................................... 35
Wiring Diagram — HEATER — .............................. 36
Wiring Diagram — A/C,M — ................................... 38
Front Air Control Terminals and Reference Values ... 41
INSPECTION OF FRONT AIR CONTROL .......... 41
FRONT AIR CONTROL HARNESS CONNEC-
TOR TERMINAL LAYOUT ................................... 41
TERMINAL AND REFERENCE VALUES FOR
MTC-2
Revision: December 2006 2007 Sentra
FRONT AIR CONTROL ....................................... 41
Operational Check .................................................. 43
CHECKING BLOWER ......................................... 43
CHECKING DISCHARGE AIR ............................ 43
CHECKING RECIRCULATION ............................ 43
CHECKING TEMPERATURE DECREASE ......... 43
CHECKING TEMPERATURE INCREASE .......... 43
CHECKING A/C SWITCH (IF EQUIPPED) ......... 43
Power Supply and Ground Circuit for Front Air Con-
trol ........................................................................... 44
INSPECTION FLOW ........................................... 44
COMPONENT DESCRIPTION ............................ 45
DIAGNOSTIC PROCEDURE .............................. 45
LAN System Circuit ................................................ 47
DIAGNOSTIC PROCEDURE .............................. 47
Mode Door Motor Circuit ........................................ 50
INSPECTION FLOW ........................................... 50
SYSTEM DESCRIPTION .................................... 51
COMPONENT DESCRIPTION ............................ 51
DIAGNOSTIC PROCEDURE .............................. 51
Air Mix Door Motor Circuit ...................................... 52
INSPECTION FLOW ........................................... 52
SYSTEM DESCRIPTION .................................... 53
COMPONENT DESCRIPTION ............................ 53
DIAGNOSTIC PROCEDURE .............................. 53
Intake Door Motor Circuit ........................................ 54
INSPECTION FLOW ........................................... 54
SYSTEM DESCRIPTION .................................... 55
COMPONENT DESCRIPTION ............................ 55
DIAGNOSTIC PROCEDURE .............................. 55
Blower Motor Circuit ...............................................56
INSPECTION FLOW ........................................... 56
SYSTEM DESCRIPTION .................................... 57
COMPONENT DESCRIPTION ............................ 57
DIAGNOSTIC PROCEDURE .............................. 58
COMPONENT INSPECTION .............................. 61
Magnet Clutch Circuit .............................................62
INSPECTION FLOW ........................................... 62
SYSTEM DESCRIPTION .................................... 63
DIAGNOSTIC PROCEDURE .............................. 63
Insufficient Cooling ................................................. 66
INSPECTION FLOW ........................................... 66
PERFORMANCE TEST ANALYSIS .................... 68
PERFORMANCE CHART ................................... 70
TROUBLE DIAGNOSIS FOR ABNORMAL
PRESSURE .........................................................70
Insufficient Heating ................................................. 74
INSPECTION FLOW ........................................... 74
Noise ...................................................................... 76
INSPECTION FLOW ........................................... 76
CONTROL UNIT ........................................................ 77
Removal and Installation ........................................ 77
FRONT AIR CONTROL ....................................... 77
FRONT BLOWER MOTOR ....................................... 78
Removal and Installation ........................................ 78
REMOVAL ...........................................................78
INSTALLATION .................................................... 78
IN-CABIN MICROFILTER ..........................................79
Removal and Installation .........................................79
FUNCTION ..........................................................79
REPLACEMENT TIMING ....................................79
REPLACEMENT PROCEDURES ........................79
HEATER & COOLING UNIT ASSEMBLY .................81
Removal and Installation .........................................81
REMOVAL ............................................................81
INSTALLATION ....................................................82
HEATER CORE .........................................................83
Removal and Installation .........................................83
REMOVAL ............................................................83
INSTALLATION ....................................................83
INTAKE DOOR MOTOR ............................................84
Removal and Installation .........................................84
REMOVAL ............................................................84
INSTALLATION ....................................................84
MODE DOOR MOTOR ..............................................85
Removal and Installation .........................................85
REMOVAL ............................................................85
INSTALLATION ....................................................85
AIR MIX DOOR MOTOR ...........................................86
Removal and Installation .........................................86
REMOVAL ............................................................86
INSTALLATION ....................................................86
FAN CONTROL AMPLIFIER .....................................87
Removal and Installation .........................................87
REMOVAL ............................................................87
INSTALLATION ....................................................87
DUCTS AND GRILLES .............................................88
Removal and Installation .........................................88
CENTER VENTILATOR GRILLE RH, LH ............89
UPPER DEFROSTER GRILLE ............................89
SIDE VENTILATOR GRILLE RH, LH ...................90
SIDE DEFROSTER GRILLE RH, LH ...................90
SIDE VENTILATOR DUCT RH, LH .....................90
DEFROSTER NOZZLE ........................................90
SIDE DEFROSTER DUCT RH, LH ......................90
FRONT FOOT DUCT RH ....................................90
FRONT FOOT DUCT LH .....................................90
REAR FLOOR CONNECTOR DUCT ..................90
REAR FLOOR DUCT RH ....................................91
REAR FLOOR DUCT LH .....................................91
REFRIGERANT LINES .............................................92
HFC-134a (R-134a) Service Procedure ..................92
SETTING OF SERVICE TOOLS AND EQUIP-
MENT ...................................................................92
Components ............................................................94
Removal and Installation for Compressor -
MR20DE .................................................................97
REMOVAL ............................................................97
INSTALLATION ....................................................97
Removal and Installation for Compressor —
QR25DE ..................................................................98
REMOVAL ............................................................98
INSTALLATION ....................................................98
Removal and Installation for Compressor Clutch -
MR20DE .................................................................99
REMOVAL ............................................................99
MTC-3
C
D
E
F
G
H
I
K
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M
A
B
MTC
Revision: December 2006 2007 Sentra
INSPECTION AFTER REMOVAL ..................... 100
INSTALLATION ................................................. 100
INSPECTION AFTER INSTALLATION ............. 101
BREAK-IN OPERATION ................................... 101
Removal and Installation for Compressor Clutch -
QR25DE ............................................................... 101
REMOVAL ......................................................... 101
INSPECTION AFTER REMOVAL ..................... 102
INSTALLATION ................................................. 103
INSPECTION AFTER INSTALLATION ............. 104
BREAK-IN OPERATION ................................... 104
Removal and Installation for Low-pressure Flexible
Hose and Muffler Pipe .......................................... 104
REMOVAL ......................................................... 104
INSTALLATION ................................................. 104
Removal and Installation for High-pressure Flexible
Hose ..................................................................... 104
REMOVAL ......................................................... 104
INSTALLATION ................................................. 105
Removal and Installation for High-pressure Pipe . 105
REMOVAL ......................................................... 105
INSTALLATION ................................................. 105
Removal and Installation for Refrigerant Pressure
Sensor .................................................................. 105
REMOVAL ......................................................... 105
INSTALLATION ................................................. 105
Removal and Installation for Condenser .............. 105
REMOVAL ......................................................... 105
INSTALLATION ................................................. 106
Removal and Installation for Evaporator .............. 106
REMOVAL ......................................................... 106
INSTALLATION ................................................. 107
Removal and Installation for Expansion Valve ...... 107
REMOVAL ......................................................... 107
INSTALLATION ................................................. 107
Checking for Refrigerant Leaks ............................ 107
Checking System for Leaks Using the Fluorescent
Leak Detector ....................................................... 108
Dye Injection ......................................................... 108
Electronic Refrigerant Leak Detector .................... 108
PRECAUTIONS FOR HANDLING THE LEAK
DETECTOR ....................................................... 108
CHECKING PROCEDURE ............................... 109
SERVICE DATA AND SPECIFICATIONS (SDS) .....111
Service Data and Specifications (SDS) .................111
COMPRESSOR .................................................111
OIL ......................................................................111
REFRIGERANT ..................................................111
ENGINE IDLING SPEED ...................................111
BELT TENSION ..................................................111
Produktspezifikationen
| Marke: | Nissan |
| Kategorie: | Auto |
| Modell: | Sentra (2007) |
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