Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti I35 A33 2002-2004 Approved Infiniti I35 2004 ha
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HEATER &
AIR CONDITIONER
GI
SECTION HA MA
EM
LC
EC
CONTENTS
FE
PRECAUTIONS ...............................................................2 A/C System................................................................50
Precautions for Supplemental Restraint System Mode Door Motor.......................................................53 AT
(SRS) AIR BAG and SEAT BELT Air Mix Door Motor ....................................................60
PRE-TENSIONER ......................................................2 Intake Door Motor......................................................63
Precautions for Working with HFC-134a (R-134a) .....2 Blower Motor..............................................................66 AX
General Refrigerant Precautions .................................3 Magnet Clutch............................................................75
Precautions for Leak Detection Dye............................3 Insufficient Cooling ....................................................81
SU
Identification.................................................................3 Insufficient Heating ....................................................89
Precautions for Refrigerant Connection ......................4 Noise..........................................................................90
Precautions for Servicing Compressor........................7 Self-diagnosis ............................................................91 BR
Precautions for Service Equipment .............................7 Memory Function .......................................................92
Wiring Diagrams and Trouble Diagnosis.....................9 ECON (ECONOMY) Mode ........................................93
PREPARATION .............................................................10 Ambient Sensor Circuit..............................................93 ST
Special Service Tools ................................................10 In-vehicle Sensor Circuit............................................97
HFC-134a (R-134a) Service Tools and Sunload Sensor Circuit............................................100
Equipment..................................................................11 Intake Sensor Circuit ...............................................104
RS
DESCRIPTION ...............................................................14 Air Mix Door Motor PBR Circuit ..............................106
Refrigeration System .................................................14 SERVICE PROCEDURE..............................................107 BT
V-6 Variable Displacement Compressor....................15 HFC-134a (R-134a) Service Procedure ..................107
Component Layout ....................................................19 Maintenance of Lubricant Quantity in
Introduction ................................................................20 Compressor .............................................................109
Features.....................................................................20 Compressor .............................................................112
Overview of Control System......................................23 Compressor Clutch ..................................................112
Control Operation ......................................................23 Heater Unit (Heater Core) .......................................116 SC
Discharge Air Flow.....................................................25 Blower and Cooling Unit (A/C Evaporator) .............117
System Description....................................................26 Refrigerant Lines .....................................................118 EL
TROUBLE DIAGNOSES................................................27 Fluorescent Dye Leak Detector...............................122
Component Location..................................................27 Belt...........................................................................123
Circuit Diagram ..........................................................29 In-cabin Microfilter ...................................................123 IDX
Wiring Diagram - A/C, A - ..........................................30 SERVICE DATA AND SPECIFICATIONS (SDS) .......124
Auto Amp. Terminals and Reference Value...............34 Compressor .............................................................124
Self-diagnosis ............................................................36 Lubricant ..................................................................124
How to Perform Trouble Diagnoses for Quick Refrigerant ...............................................................124
and Accurate Repair ..................................................46 Engine Idling Speed (When A/C is ON) ..................124
Operational Check .....................................................47 Belt Tension .............................................................124
PRECAUTIONS
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
Precautions for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" NHHA0277
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along 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 sys-
tem 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.
Information that is necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
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