Nissan Sentra (2007) Bedienungsanleitung

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MTC-1

MANUAL AIR CONDITIONER

J AIR CONDITIONER

CONTENTS

C

D

E

F

G

H

I

K

L

M

SECTION MTC A

B

MTC

Revision: December 20062007 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

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