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MTC

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AIR CONDITIONER

MTC
A

B
SECTION
MANUAL AIR CONDITIONER C

E
CONTENTS
SERVICE INFORMATION ........................... 3
. Wiring Diagram - A/C,M - .......................................27 . F
Operational Check ..................................................30 .
PRECAUTIONS .................................................. 3
. Mode Door ..............................................................31
.
Precaution for Supplemental Restraint System Air Mix Door ............................................................32
. G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Intake Door .............................................................33
.
SIONER" .................................................................. 3
. Front Blower Motor Circuit ......................................33 .
Precaution Necessary for Steering Wheel Rota- Magnet Clutch Circuit (If Equipped) ........................37 .
H
tion After Battery Disconnect .................................... 3. Insufficient Cooling .................................................45.
Precaution for Procedure without Cowl Top Cover 4 ...... Insufficient Heating .................................................52.
Precaution for Working with HFC-134a (R-134a)...... 4 Noise ......................................................................53
.
General Refrigerant Precaution ............................... 4 . I
Oil Precaution ........................................................... 5
. CONTROLLER .................................................. 55
Precaution for Refrigerant Connection ..................... 5 . Removal and Installation ........................................55
.
Precaution for Service of Compressor ..................... 7 . Disassembly and Assembly ....................................56
. MTC
Precaution for Service Equipment ............................ 8 .
Precaution for Leak Detection Dye .......................... 9 .
THERMO CONTROL AMPLIFIER .................... 57
Removal and Installation ........................................57
.
PREPARATION .................................................11
. K
HFC-134a (R-134a) Service Tool and Equipment 11 ....
A/C UNIT ASSEMBLY ...................................... 58
Removal and Installation ........................................58
.
Commercial Service Tool ....................................... 13
.
Disassembly and Assembly ....................................60
.
L
REFRIGERATION SYSTEM .............................15
.
Refrigerant Cycle ................................................... 15
.
BLOWER MOTOR ............................................ 62
Removal and Installation ........................................62
.
Refrigerant System Protection ............................... 15 .
Component Part Location ...................................... 16. M
INTAKE DOOR .................................................. 63
OIL .....................................................................17
. Intake Door Cable Adjustment ................................63
.
Maintenance of Oil Quantity in Compressor .......... 17
. AIR MIX DOOR ................................................. 64 N
AIR CONDITIONER CONTROL ........................19
. Air Mix Door Cable Adjustment ..............................64
.
Control Operation ................................................... 19
. MODE DOOR .................................................... 65
Discharge Air Flow ................................................. 20
. O
Mode Door Cable Adjustment ................................65
.
System Description ................................................ 20
.
BLOWER FAN RESISTOR ............................... 66
TROUBLE DIAGNOSIS ....................................22
. Removal and Installation ........................................66
. P
CONSULT-II Function (BCM) ................................. 22 .
How to Perform Trouble Diagnosis for Quick and HEATER CORE ................................................. 67
Accurate Repair ..................................................... 22 . Removal and Installation ........................................67
.
Component Parts and Harness Connector Loca-
tion ......................................................................... 23
. AIR CONDITIONER FILTER ............................. 68
Schematic .............................................................. 25
. Removal and Installation ........................................68
.
Wiring Diagram - Heater - ...................................... 26 .

Revision: October 2008 MTC-1 2009 Versa
DUCTS AND GRILLES ..................................... 69
. Removal and Installation of Condenser ................. 84 .
Removal and Installation ....................................... 69
. Removal and Installation of Liquid Tank ................ 84 .
Removal and Installation of Evaporator ................. 85 .
REFRIGERANT LINES ..................................... 74
. Removal and Installation of Expansion Valve ........ 86 .
HFC-134a (R-134a) Service Procedure ................ 74 . Checking of Refrigerant Leaks ............................... 86 .
Component ............................................................ 76
. Checking System for Leaks Using the Fluorescent
Removal and Installation of Compressor - Leak Detector ......................................................... 87
.
HR16DE ................................................................ 78
. Dye Injection .......................................................... 87
.
Removal and Installation of Compressor - Electronic Refrigerant Leak Detector ..................... 87 .
MR18DE ................................................................ 80
.
Removal and Installation of Low-Pressure Flexi- SERVICE DATA AND SPECIFICATIONS
ble Hose ................................................................ 81
. (SDS) ................................................................ 90
.
Removal and Installation of High-Pressure Flexi- Compressor ........................................................... 90 .
ble Hose ................................................................ 82
. Oil ........................................................................... 90
.
Removal and Installation of High-Pressure Pipe ... 83 Refrigerant ............................................................. 90.
Removal and Installation of Refrigerant Pressure
Sensor ................................................................... 83
.

Revision: October 2008 MTC-2 2009 Versa
PRECAUTIONS
< SERVICE INFORMATION >
SERVICE INFORMATION A
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT B
PRE-TENSIONER" INFOID:0000000004784399

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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