Infiniti G35 (V35). Manual — part 83
ATC-3
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ATC
COMPONENT INSPECTION . . . . . . . .110
Multiplex Communication Circuit . . . . . . ... 111
DIAGNOSIS PROCEDURE FOR MULTIPLEX
COMMUNICATION . . . . . . . . . . . 111
A/C AND AUDIO CONTROLLER . . . . . . . 113
Removal and Installation . . . . . . . . . ...113
REMOVAL . . . . . . . . . . . . . . ..113
INSTALLATION . . . . . . . . . . . . ..113
AUTO AMP . . . . . . . . . . . . . . . ..114
Removal and Installation of Display and A/C Auto
Amp. . . . . . . . . . . . . . . . . . ..114
REMOVAL . . . . . . . . . . . . . . ..114
INSTALLATION . . . . . . . . . . . . ..114
AMBIENT SENSOR . . . . . . . . . . . . .115
Removal and Installation . . . . . . . . . ...115
REMOVAL . . . . . . . . . . . . . . ..115
INSTALLATION . . . . . . . . . . . . ..115
IN-VEHICLE SENSOR . . . . . . . . . . . .116
Removal and Installation . . . . . . . . . ...116
REMOVAL . . . . . . . . . . . . . . ..116
INSTALLATION . . . . . . . . . . . . ..116
SUNLOAD SENSOR . . . . . . . . . . . ...117
Removal and Installation . . . . . . . . . ...117
REMOVAL . . . . . . . . . . . . . . ..117
INSTALLATION . . . . . . . . . . . . ..117
INTAKE SENSOR . . . . . . . . . . . . . 118
Removal and Installation . . . . . . . . . ...118
REMOVAL . . . . . . . . . . . . . . ..118
INSTALLATION . . . . . . . . . . . . ..118
BLOWER UNIT . . . . . . . . . . . . . . 119
Removal and Installation . . . . . . . . . ...119
REMOVAL . . . . . . . . . . . . . . ..119
INSTALLATION . . . . . . . . . . . . ..119
Disassembly and Assembly . . . . . . . . . 120
BLOWER MOTOR . . . . . . . . . . . . .. 121
Removal and Installation . . . . . . . . . .. 121
REMOVAL . . . . . . . . . . . . . . . 121
INSTALLATION . . . . . . . . . . . . . 121
INTAKE DOOR MOTOR . . . . . . . . . . . 122
Removal and Installation . . . . . . . . . .. 122
REMOVAL . . . . . . . . . . . . . . . 122
INSTALLATION . . . . . . . . . . . . . 122
IN-CABIN MICROFILTER . . . . . . . . . ... 123
Removal and Installation . . . . . . . . . .. 123
HEATER & COOLING UNIT ASSEMBLY . . . .. 124
Removal and Installation . . . . . . . . . .. 124
REMOVAL . . . . . . . . . . . . . . . 124
INSTALLATION . . . . . . . . . . . . . 125
Disassembly and Assembly . . . . . . . . . 126
HEATER CORE . . . . . . . . . . . . . .. 128
Removal and Installation . . . . . . . . . .. 128
REMOVAL . . . . . . . . . . . . . . . 128
INSTALLATION . . . . . . . . . . . . . 128
MODE DOOR MOTOR . . . . . . . . . . . 129
Removal and Installation . . . . . . . . . .. 129
REMOVAL . . . . . . . . . . . . . . . 129
INSTALLATION . . . . . . . . . . . . . 129
AIR MIX DOOR MOTOR . . . . . . . . . . . 130
Removal and Installation . . . . . . . . . .. 130
REMOVAL . . . . . . . . . . . . . . . 130
INSTALLATION . . . . . . . . . . . . . 130
DUCTS AND GRILLES . . . . . . . . . . ... 131
Removal and Installation . . . . . . . . . .. 131
REFRIGERANT LINES . . . . . . . . . . ... 134
HFC-134a (R-134a) Service Procedure . . . ... 134
SETTING OF SERVICE TOOLS AND EQUIP-
MENT . . . . . . . . . . . . . . . . 134
Components . . . . . . . . . . . . . . . 136
Removal and Installation of Compressor . . . .. 136
REMOVAL . . . . . . . . . . . . . . . 136
INSTALLATION . . . . . . . . . . . . . 137
Removal and Installation of Compressor Clutch .. 137
REMOVAL . . . . . . . . . . . . . . . 137
INSTALLATION . . . . . . . . . . . . . 139
Removal and Installation of Low-pressure Flexible
Hose . . . . . . . . . . . . . . . . . . 140
REMOVAL . . . . . . . . . . . . . . . 140
INSTALLATION . . . . . . . . . . . . . 141
Removal and Installation of High-pressure Flexible
Hose . . . . . . . . . . . . . . . . . . 141
REMOVAL . . . . . . . . . . . . . . . 141
INSTALLATION . . . . . . . . . . . . . 142
Removal and Installation of Low-pressure Pipe 1
(Engine Compartment) . . . . . . . . . . . 142
REMOVAL . . . . . . . . . . . . . . . 142
INSTALLATION . . . . . . . . . . . . . 143
Removal and Installation of High-pressure Pipe 1
(Engine Compartment) . . . . . . . . . . . 143
REMOVAL . . . . . . . . . . . . . . . 143
INSTALLATION . . . . . . . . . . . . . 144
Removal and Installation of Low-pressure Pipe 2
and High-pressure Pipe 2 . . . . . . . . . . 144
REMOVAL . . . . . . . . . . . . . . . 144
INSTALLATION . . . . . . . . . . . . . 145
Removal and Installation of Liquid Tank . . . ... 146
REMOVAL . . . . . . . . . . . . . . . 146
INSTALLATION . . . . . . . . . . . . . 147
Removal and Installation of Condenser . . . . 147
REMOVAL . . . . . . . . . . . . . . . 147
INSTALLATION . . . . . . . . . . . . . 148
Removal and Installation of Refrigerant Pressure
Sensor . . . . . . . . . . . . . . . . .. 148
REMOVAL . . . . . . . . . . . . . . . 148
INSTALLATION . . . . . . . . . . . . . 149
Removal and Installation of Evaporator . . . . 149
REMOVAL . . . . . . . . . . . . . . . 149
INSTALLATION . . . . . . . . . . . . . 149
ATC-4
INSTALLATION . . . . . . . . . . . . .. 150
DETECTOR . . . . . . . . . . . . . ...152
CHECKING PROCEDURE . . . . . . . . 153
PRECAUTIONS
ATC-5
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ATC
PRECAUTIONS
PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NJS0002G
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
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.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
●
To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
●
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
●
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Battery Service
NJS000CU
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
Precautions for Working with HFC-134a (R-134a)
NJS0002H
CAUTION:
●
CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. If the refrigerants
are mixed and compressor malfunction is likely to occur, refer to “CONTAMINATED REFRIGER-
ANT” below. To determine the purity of HFC-134a (R-134a) in the vehicle and recovery tank, use
Refrigerant Recovery/Recycling Recharging equipment and Refrigerant Identifier.
●
Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) compo-
nents. If lubricant other than that specified is used, compressor malfunction is likely to occur.
●
The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The fol-
lowing handling precautions must be observed:
–
When removing refrigerant components from a vehicle, immediately cap (seal) the component to
minimize the entry of moisture from the atmosphere.
–
When installing refrigerant components to a vehicle, never remove the caps (unseal) until just
before connecting the components. Connect all refrigerant loop components as quickly as possi-
ble to minimize the entry of moisture into system.
–
Only use the specified lubricant from a sealed container. Immediately reseal containers of lubri-
cant. Without proper sealing, lubricant will become moisture saturated and should not be used.
–
Never allow lubricant (Nissan A/C System Oil Type S) to come in contact with styrene foam parts.
Damage may result.
ATC-6
PRECAUTIONS
CONTAMINATED REFRIGERANT
If a refrigerant other than pure HFC-134a (R-134a) is identified in a vehicle, take appropriate steps
shown below:
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Explain to the customer that environmental regulations prohibit the release of contaminated refrigerant
into the atmosphere.
●
Explain that recovery of the contaminated refrigerant could damage service equipment and refrigerant
supply.
●
Suggest the customer return the vehicle to the location of previous service where the contamination may
have occurred.
●
In case of repairing, recover the refrigerant using only dedicated equipment and containers. Never
recover contaminated refrigerant into the existing service equipment. If the facility does not have
dedicated recovery equipment, contact a local refrigerant product retailer for available service. This refrig-
erant must be disposed of in accordance with all federal and local regulations. In addition, replacement of
all refrigerant system components on the vehicle is recommended.
●
If the vehicle is within the warranty period, the air conditioner warranty is void. Please contact Nissan Cus-
tomer Affairs for further assistance.
General Refrigerant Precautions
NJS0002I
WARNING:
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Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) from the A/C system, using certified service equipment meet-
ing requirements of SAE J-2210 [HFC-134a (R-134a) recycling equipment], or J-2209 [HFC-134a (R-
134a) recovery equipment]. If accidental system discharge occurs, ventilate work area before
resuming service. Additional health and safety information may be obtained from refrigerant and
lubricant manufacturers.
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Never release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant every time an air conditioning system is discharged.
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Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or
air conditioning system.
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Never store or heat refrigerant containers above 52
°
C (126
°
F).
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Never heat a refrigerant container with an open flame; if container warming is required, place the
bottom of the container in a warm pail of water.
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Never intentionally drop, puncture, or incinerate refrigerant containers.
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Keep refrigerant away from open flames: poisonous gas will be produced if refrigerant burns.
●
Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent
suffocation.
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Never pressure test or leak test HFC-134a (R-134a) service equipment and/or vehicle air condition-
ing systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a) have
been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause injury
or property damage. Additional health and safety information may be obtained from refrigerant
manufacturers.
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