2003 NISSAN X-TRAIL Electronic Repair Manual

CD player homelink keyless entry bolt pattern reset infotainment system power steering fluid

Page 593 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual PREPARATION
ATC-15
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Refrigerant weight scaleFor measuring of refrigerant
Fitting size:Thread size
l1/22-16 ACME
Vacuum pump
(Including the isolator valve)
Capacity:
lAir dis

Page 594 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual ATC-16
REFRIGERATION SYSTEM
REFRIGERATION SYSTEM
PFP:KA990
Refrigerant CycleEJS000TD
REFRIGERANT FLOW
The refrigerant flows in the standard pattern, that is, through the compressor, the condenser with

ATC-16
REFRIGERATION SYSTEM
REFRIGERATION SYSTEM
PFP:KA990
Refrigerant CycleEJS000TD
REFRIGERANT FLOW
The refrigerant flows in the standard pattern, that is, through the compressor, the condenser with liquid tank,
through the evaporator, and back to the compressor. The refrigerant evaporation through the evaporator coil is
controlled by an externally equalized expansion valve, located inside the evaporator case.
FREEZE PROTECTION (WITH GASOLINE ENGINE: CWV-615M COMPRESSOR)
Under normal operating conditions, when the A/C is switched on, the compressor runs continuously, and the
evaporator pressure, and therefore, temperature is controlled by the V-6 variable displacement compressor to
prevent freeze up.
Refrigerant System ProtectionEJS000TE
REFRIGERANT PRESSURE SENSOR (WITH GASOLINE ENGINE: CWV-615M COMPRESSOR)
The refrigerant system is protected against excessively high or low pressures by the refrigerant pressure sen-
sor, located on the liquid tank. If the system pressure rises above, or falls below the specifications, the refriger-
ant pressure sensor detects the pressure inside the refrigerant line and sends the voltage signal to the ECM.
ECM makes the A/C relay go OFF and stops the compressor when pressure on the high pressure side
detected by refrigerant pressure sensor is over about 2,746 kPa (28 kg/cm
2, 398 psi), or below about 134 kPa
(1.4 kg/cm
2,20psi).
DUAL-PRESSURE SWITCH (WITH DIESEL ENGINE: DKV-11G COMPRESSOR)
The refrigerant system is protected against excessively high or low pressures by the dual-pressure switch,
located on the liquid tank. If the system pressure rises above or falls below the specifications, the dual-pres-
sure switch opens to interrupt the compressor operation.
PRESSURE RELIEF VALVE (WITH GASOLINE ENGINE: CWV-615M COMPRESSOR)
The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
When the pressure of refrigerant in the system increases to an abnormal level [more than 3,727 kPa (38 kg/

Page 595 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual REFRIGERATION SYSTEM
ATC-17
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cm2, 540 psi)], the release port on the pressure relief valve automatically opens and releases refrigerant into
the atmosphere.
V-6 Variable Dis

Page 596 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual ATC-18
REFRIGERATION SYSTEM
The tilt of the swash plate allows the pistons stroke to change so that refrigerant discharge can be continu-
ously changed from 14.5 to 146 cm
3(0.885 to 8.91 cu in).
Ope

Page 597 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual REFRIGERATION SYSTEM
ATC-19
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lThe crankcases internal pressure to equal the pressure on the low-pressure side;
lThe cylinders internal pressure to be greater than the cran

Page 598 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual ATC-20
REFRIGERATION SYSTEM
Component Layout
EJS000TG
RJIA0479E

Page 599 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual LUBRICANT
ATC-21
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LUBRICANTPFP:KLG00
Maintenance of Lubricant Quantity in CompressorEJS000TH
The lubricant in the compressor circulates through the system with the refrigera

Page 600 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual ATC-22
LUBRICANT
4.CHECK ANY PART
Is there any part to be replaced? (Evaporator, condenser,liquid tank or in case there is evidence of a large
amount of lubricant leakage.)
Ye s o r N o
Ye s > > G o t

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