2003 NISSAN X-TRAIL Service Repair Manual

diagram fuse immobilizer rear entertainment engine brakes

Page 3417 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual REFRIGERATION SYSTEM
ATC-21
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Operation
1. Operation Control Valve
Operation control valve is located in the suction port (low-pressure) side, and opens or closes in respon

REFRIGERATION SYSTEM
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Operation
1. Operation Control Valve
Operation control valve is located in the suction port (low-pressure) side, and opens or closes in response
to changes in refrigerant suction pressure.
Operation of the valve controls the internal pressure of the crankcase.
The angle of the wobble (swash) plate is controlled between the crankcase’s internal pressure and the
piston cylinder pressure.
2. Maximum Cooling
Refrigerant pressure on the low-pressure side increases with an increase in heat loads.
When this occurs, the control valve’s bellows compress to open the low-pressure side valve and close the
high-pressure side valve.
This causes the following pressure changes:
–The crankcase’s internal pressure to equal the pressure on the low-pressure side;
–The cylinder’s internal pressure to be greater than the crankcase’s internal pressure.
Under this condition, the wobble (swash) plate is set to the maximum stroke position.
3. Capacity Control
–Refrigerant pressure on suction side is low during high speed driving or when ambient or interior tempera-
ture is low.
–The bellows expands when refrigerant pressure on the suction pressure side drops below approximately
177 kPa (1.77 bar, 1.8 kg/cm
2 , 26 psi).
Since suction pressure is low, it makes the suction port close and the discharge port open. Thus, crank-
case pressure becomes high as high-pressure enters the crankcase.
–The force acts around the journal pin near the swash (wobble) plate, and is generated by the pressure dif-
ference between before and behind the piston.
The drive lug and journal pin are located where the piston generates the highest pressure. Piston pres-
sure is between suction pressure Ps and discharge pressure Pd, which is near suction pressure Ps. If
crankcase pressure Pc rises due to capacity control, the force around the journal pin makes the wobble
(swash) plate angle decrease and also the piston stroke decrease. In other words, crankcase pressure
RHA473C

Page 3418 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ATC-22
REFRIGERATION SYSTEM

increase triggers pressure difference between the piston and the crankcase. The pressure difference
changes the angle of the wobble (swash) plate.
RHA474C

Page 3419 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual REFRIGERATION SYSTEM
ATC-23
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Component LayoutEJS00280
NOTE:
This illustration is for RHD models. The layout for LHD models is symmetrically opposite.
RJIA2819E

Page 3420 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ATC-24
LUBRICANT

LUBRICANTPFP:KLG00
Maintenance of Lubricant Quantity in CompressorEJS000TH
The lubricant in the compressor circulates through the system with the refrigerant. Add lubricant to compr

Page 3421 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual LUBRICANT
ATC-25
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LUBRICANT ADJUSTING PROCEDURE FOR COMPONENTS REPLACEMENT EXCEPT COM-
PRESSOR
After replacing any of the following major components, add the correct amoun

Page 3422 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ATC-26
LUBRICANT

RHA065DI

Page 3423 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual AIR CONDITIONER CONTROL
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AIR CONDITIONER CONTROLPFP:27500
Description of Air Conditioner LAN Control SystemEJS000TI
The LAN (Local Area Network) system consists of

Page 3424 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ATC-28
AIR CONDITIONER CONTROL

TRANSMISSION DATA AND TRANSMISSION ORDER
Auto amp. data is transmitted consecutively to each of the door motors following the form shown in figure
below.
Start:
Initia

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