Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti Q45 G50 FY33 1994-1996.1998-2000 Approved 2000.0_Q45 ha
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EXIT
HEATER &
AIR CONDITIONER
HA
GI
SECTION MA
EM
LC
CONTENTS
EC
PRECAUTIONS AND PREPARATION............................2 Wiring Diagram - A/C - ..............................................53
Supplemental Restraint System (SRS) AIR Auto Amp. Terminals and Reference Value...............58
BAG and SEAT BELT PRE-TENSIONER...............2 Main Power Supply and Ground Circuit Check ........61 FE
Precautions for Working with HFC-134a (R-134a) .....2 Self-diagnosis Circuit .................................................63
General Refrigerant Precautions .................................3 Ambient Sensor Circuit..............................................64
Precautions for Refrigerant Connection ......................3 In-vehicle Sensor Circuit............................................67
AT
Precautions for Servicing Compressor........................6 Intake Sensor Circuit .................................................70
Special Service Tools ..................................................7 Sunload Sensor Circuit..............................................71 PD
HFC-134a (R-134a) Service Tools and Mode Door Motor Circuit (LAN).................................74
Equipment....................................................................8 Air Mix Door Motor Circuit (LAN) ..............................76
Precautions for Service Equipment ...........................10 Bi-level Door Motor Circuit (LAN)..............................78 FA
DESCRIPTION ...............................................................12 LAN System Circuit ...................................................80
Refrigeration Cycle ....................................................12 Intake Door Motor Circuit ..........................................83
V-6 Variable Displacement Compressor....................13 Blower Motor Circuit ..................................................87 RA
Component Layout ....................................................16 Magnet Clutch Circuit ................................................92
Air Conditioner LAN System......................................17 Rear Vent Door Motor Circuit ....................................96
BR
Automatic Temperature Control (ATC) System .........19 Control Linkage Adjustment.......................................97
Overview of Control System......................................20 SERVICE PROCEDURES .............................................99
Control Operation ......................................................20 HFC-134a (R-134a) Service Procedure ....................99 ST
Discharge Air Flow.....................................................22 Maintenance of Lubricant Quantity in
TROUBLE DIAGNOSES ...............................................24 Compressor .............................................................102
How to Perform Trouble Diagnoses for Quick Refrigerant Lines .....................................................104 RS
and Accurate Repair ..................................................24 Checking Refrigerant Leaks ....................................105
Operational Check .....................................................25 Compressor Mounting .............................................108
Symptom Chart..........................................................28 Belt Tension .............................................................108
BT
Self-diagnosis ............................................................29 Fast Idle Control Device (FICD) ..............................108
Preliminary Check......................................................36 Compressor .............................................................108
Performance Test Diagnoses ....................................44 Compressor Clutch ..................................................109
Performance Chart ....................................................46 Ventilation Air Filter.................................................. 111
Trouble Diagnoses for Abnormal Pressure ...............47 SERVICE DATA AND SPECIFICATIONS (SDS) ........113 EL
Component Location..................................................50 General Specifications.............................................113
Circuit Diagram ..........................................................52 Inspection and Adjustment ......................................113
IDX
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