2003 NISSAN X-TRAIL Service Repair Manual

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Page 3409 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual PRECAUTIONS
ATC-13
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IDENTIFICATION
NOTE:
Vehicles with factory installed fluorescent dye have a green label.
Vehicles without factory installed fluorescent dye have a blue

Page 3410 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ATC-14
PREPARATION

PREPARATIONPFP:00002
Special Service ToolsEJS001F1
WITH GASOLINE ENGINE (CWV-615M COMPRESSOR)
WITH DIESEL ENGINE (DKV-11G COMPRESSOR)
Tool number
Tool nameDescription
KV99106100
C

Page 3411 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual PREPARATION
ATC-15
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HFC-134a (R-134a) Service Tools and EquipmentEJS00286
Never mix HFC-134a (R-134a) refrigerant and/or its specified lubricant with CFC-12 (R-12) refrige

Page 3412 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ATC-16
PREPARATION

Recovery/Recycling
Recharging equipmentFunction: Refrigerant recovery,
recycling and recharging
Electrical leak detectorPower supply:
DC 12V (Battery terminal)
(J-43926)
Refriger

Page 3413 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual PREPARATION
ATC-17
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(J-41459)
HFC-134a (R-134a) dye injector
Use with J-41447, 1/4 ounce
bottleFor injecting 1/4 ounce of fluorescent
leak detection dye into A/C system

Page 3414 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ATC-18
REFRIGERATION SYSTEM

REFRIGERATION SYSTEMPFP:KA990
Refrigerant CycleEJS000TD
REFRIGERANT FLOW
The refrigerant flows in the standard pattern, that is, through the compressor, the condenser wit

ATC-18
REFRIGERATION SYSTEM

REFRIGERATION SYSTEMPFP: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 usual 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 (27.46 bar, 28 kg/cm
2 , 398 psi), or below
about 134 kPa (1.34 bar, 1.4 kg/cm
2 , 20 psi).
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 unusual level [more than 3,727 kPa (37.27 bar,
38 kg/cm
2 , 540 psi)], the release port on the pressure relief valve automatically opens and releases refriger-
ant into the atmosphere.
RJIA0676E

Page 3415 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual REFRIGERATION SYSTEM
ATC-19
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V-6 Variable Displacement Compressor (With Gasoline Engine: CWV-615M
Compressor)
EJS000TF
GENERAL INFORMATION
1. The V-6 variable compressor

Page 3416 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ATC-20
REFRIGERATION SYSTEM

DESCRIPTION
General
The variable compressor is basically a swash plate type that changes piston stroke in response to the required
cooling capacity.
The tilt of the wobbl

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