Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti G20 P11 1999-2002 Approved G20-P11-2001 ha

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                                                                                                                      HEATER &
                                                                                                               AIR CONDITIONER                                              GI




                                                                                                SECTION                       HA                                            MA

                                                                                                                                                                            EM

                                                                                                                                                                            LC

                                                                                                                                                                            EC

                                                               CONTENTS                                                                                                     FE


                                    AUTO                                               Magnet Clutch............................................................73
                                                                                                                                                                            CL
                                                                                       Insufficient Cooling ....................................................80
PRECAUTIONS ...............................................................3
                                                                                       Insufficient Heating ....................................................88          MT
  Supplemental Restraint System (SRS) AIR
                                                                                       Noise..........................................................................89
  BAG and SEAT BELT PRE-TENSIONER...............3
                                                                                       Self-diagnosis ............................................................90
  Precautions for Working with HFC-134a (R-134a) .....3
                                                                                       Memory Function .......................................................91            AT
  General Refrigerant Precautions .................................4
                                                                                       ECON (ECONOMY) Mode ........................................92
  Precautions for Leak Detection Dye............................4
                                                                                       Ambient Sensor Circuit..............................................92
  Identification.................................................................5
                                                                                       In-vehicle Sensor Circuit............................................95
                                                                                                                                                                            AX
  Precautions for Refrigerant Connection ......................5
                                                                                       Sunload Sensor Circuit..............................................99
  Precautions for Servicing Compressor........................7
                                                                                       Intake Sensor Circuit ...............................................102             SU
  Precautions for Service Equipment .............................7
                                                                                       Air Mix Door Motor PBR Circuit ..............................104
  Wiring Diagrams and Trouble Diagnosis.....................9
                                                                                     SERVICE PROCEDURE..............................................105
PREPARATION .............................................................10
  Special Service Tools ................................................10
                                                                                       HFC-134a (R-134a) Service Procedure ..................105                            BR
                                                                                       Maintenance of Lubricant Quantity in
  HFC-134a (R-134a) Service Tools and
                                                                                       Compressor .............................................................107
  Equipment..................................................................11                                                                                             ST
                                                                                       Compressor .............................................................110
DESCRIPTION ...............................................................14
                                                                                       Compressor Clutch .................................................. 111
  Refrigeration System .................................................14
                                                                                       Thermal Protector ....................................................114
  Component Layout ....................................................15                                                                                                   RS
                                                                                       Heater Unit (Heater Core) .......................................114
  Introduction ................................................................16
                                                                                       Blower Unit ..............................................................115
  Features.....................................................................16
  Overview of Control System......................................19
                                                                                       Cooling Unit (A/C Evaporator).................................116                    BT
                                                                                       Refrigerant Lines .....................................................117
  Control Operation ......................................................19
                                                                                       Belt...........................................................................122
  Discharge Air Flow.....................................................21
                                                                                       Idle Air Control Valve (IACV) - Auxiliary Air
TROUBLE DIAGNOSES................................................23
                                                                                       Control (AAC) Valve ................................................122
  Component Location..................................................23
                                                                                       Ventilation Air Filter..................................................122
  Circuit Diagram ..........................................................25
                                                                                     SERVICE DATA AND SPECIFICATIONS (SDS) .......123
                                                                                                                                                                            SC
  Wiring Diagram - A/C, A - ..........................................26
                                                                                       Auto..........................................................................123
  Auto Amp. Terminals and Reference Value...............29
  Self-diagnosis ............................................................31                                                                                             EL
                                                                                                                       MANUAL
  How to Perform Trouble Diagnoses for Quick
  and Accurate Repair ..................................................41           PRECAUTIONS ...........................................................124             IDX
  Operational Check .....................................................42            Supplemental Restraint System (SRS) AIR
  A/C System................................................................45         BAG and SEAT BELT PRE-TENSIONER...........124
  Mode Door Motor.......................................................48             Precautions for Working with HFC-134a (R-134a) .124
  Air Mix Door Motor ....................................................54            General Refrigerant Precautions .............................125
  Intake Door Motor......................................................58            Precautions for Leak Detection Dye........................125
  Blower Motor..............................................................65         Identification.............................................................126
                                                   CONTENTS                                 (Cont'd)
  Precautions for Refrigerant Connection ..................126                      Air Mix Door.............................................................162
  Precautions for Servicing Compressor....................128                       Blower Motor............................................................167
  Precautions for Service Equipment .........................128                    Magnet Clutch..........................................................174
  Wiring Diagrams and Trouble Diagnosis.................130                         Insufficient Cooling ..................................................182
PREPARATION ...........................................................131          Insufficient Heating ..................................................189
  Special Service Tools ..............................................131           Noise........................................................................190
  HFC-134a (R-134a) Service Tools and                                             SERVICE PROCEDURE..............................................191
  Equipment................................................................132      HFC-134a (R-134a) Service Procedure ..................191
DESCRIPTION .............................................................135        Maintenance of Lubricant Quantity in
  Refrigeration System ...............................................135           Compressor .............................................................193
  Component Layout ..................................................136            Compressor .............................................................196
  Control Operation ....................................................137         Compressor Clutch ..................................................197
  Discharge Air Flow...................................................138          Thermal Protector ....................................................200
  System Description..................................................139           Heater Unit (Heater Core) .......................................200
TROUBLE DIAGNOSES..............................................140                  Blower Unit ..............................................................201
  Component Location................................................140             Cooling Unit (A/C Evaporator).................................202
  Circuit Diagram - Air Conditioner.............................142                 Refrigerant Lines .....................................................203
  Wiring Diagram - A/C, M - .......................................143              Belt...........................................................................208
  How to Perform Trouble Diagnoses for Quick                                        Idle Air Control Valve (IACV) - Auxiliary Air
  and Accurate Repair ................................................147           Control (AAC) Valve ................................................208
  Operational Check ...................................................148          Ventilation Air Filter..................................................208
  A/C System..............................................................150     SERVICE DATA AND SPECIFICATIONS (SDS) .......209
  Intake Door ..............................................................152     Manual .....................................................................209
  Mode Door Motor.....................................................156




                                                                             HA-2
                                               PRECAUTIONS                                                  AUTO
                                    Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

                                             Supplemental Restraint System (SRS) "AIR
                                             BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER" used along with
                                                                                                               NCHA0181
                                                                                                                           GI
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to INFINITI G20 is as follows:                                    MA



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