Nissan X-Trail 32. Manual - part 1361

PREPARATION

HA-103

< PREPARATION >

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Sealant or/and Lubricant

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HFC-134a (R-134a) Service Tool and Equipment

• Never mix HFC-134a (R-134a) refrigerant and/or its specified lubricant with CFC-12 (R-12) refrigerant and/

or its lubricant.

• Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/

lubricant.

• Refrigerant container fittings, service hose fittings and service equipment fittings (equipment which handles

refrigerant and/or lubricant) are different between CFC-12 (R-12) and HFC-134a (R-134a). This is to avoid
mixed use of the refrigerants/lubricant.

• Never use adapters that convert one size fitting to another: refrigerant/lubricant contamination occurs and

compressor malfunction may result.

Manifold gauge set (with hos-
es and couplers)

Identification:
• The gauge face indicates HFC-134a (R-

134a).

Fitting size: Thread size

• 1/2

″

-16 ACME

Service hoses
• High-pressure side hose
• Low-pressure side hose
• Utility hose

Hose color:
• Low-pressure side hose: Blue with black 

stripe

• High-pressure side hose: Red with black 

stripe

• Utility hose: Yellow with black stripe or 

green with black stripe

Hose fitting to gauge:

• 1/2

″

-16 ACME

Service couplers
• High-pressure side coupler
• Low-pressure side coupler

Hose fitting to service hose:
M14 x 1.5 fitting is optional or permanently 
attached.

Refrigerant weight scale

For measuring of refrigerant
Fitting size: Thread size

1/2

″

-16 ACME

Vacuum pump
(Including the isolator valve)

Capacity:
• Air displacement: 4 CFM
• Micron rating: 20 microns
• Oil capacity: 482 g (17 oz.)
Fitting size: Thread size

• 1/2

″

-16 ACME

Tool name

Description

RJIA0196E

S-NT201

S-NT202

S-NT200

S-NT203

HA-104

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PREPARATION

Tool name

Description

HFC-134a (R-134a) refrigerant

Container color: Light blue
Container marking: HFC-134a (R-
134a)
Fitting size: Thread size

• Large container 1/2

″

-16 ACME

ND-OIL8

Type: Polyalkylene glycol oil (PAG), 
ND-OIL8
Application:
HFC-134a (R-134a) swash plate com-
pressors

S-NT196

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COMPONENT PARTS

HA-105

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SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

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JMIIA3357ZZ

In the heater & cooling unit assembly

No.

Location

Function

Compressor

Intakes, compresses, and discharges refrigerant, to circulate refrigerant inside the refrigerant 
cycle.

Refrigerant pressure sensor

• AUTOMATIC AIR CONDITIONING: Refer to 

HAC-19, "Refrigerant Pressure Sensor"

.

• MANUAL AIR CONDITIONING: Refer to 

HAC-148, "Refrigerant Pressure Sensor"

.

Condenser (condenser & Liq-
uid tank)

Cools refrigerant discharged from compressor, and transforms it to liquid refrigerant.

Liquid tank (condenser & Liq-
uid tank)

Eliminates foreign matter in refrigerant, and stores temporarily liquid refrigerant. 

Expansion valve

Transforms high-pressure liquid refrigerant to mist form low-pressure liquid refrigerant by 
drawing function.

Evaporator

The mist form liquid refrigerant transforms to gas by evaporation by the air conveyed from 
blower motor. The air is cooled by the heat by evaporation.

HA-106

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SYSTEM

SYSTEM

System Diagram

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System Description

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REFRIGERANT CYCLE

Refrigerant Flow

The refrigerant from the compressor, flows the condenser with liquid tank, the evaporator, and returns to the
compressor. The refrigerant evaporation in the evaporator is controlled by an expansion valve.

Freeze Protection

To prevent evaporator from freezing up, the evaporator air temperature is monitored, and the voltage signal to
the A/C auto amp. makes the A/C relay go OFF and stop the compressor.

REFRIGERANT SYSTEM PROTECTION

Refrigerant Pressure Sensor

• The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure

sensor, located on the condenser. The refrigerant pressure sensor detects the pressure inside the refrigerant
line and sends the voltage signal to the ECM if the system pressure rises above, or falls below the specifica-
tions. 

• ECM turns the A/C relay to OFF and stops the compressor when the high-pressure side detected by refriger-

ant pressure sensor is following conditions;

- Approximately 3,120 kPa (31.2 bar, 31.8 kg/cm

2

, 452 psi) or more (Engine speed is 1,500 rpm or more.)

- Approximately 2,740 kPa (27.4 bar, 27.9 kg/cm

2

, 397 psi) or more (Engine speed is less than 1,500 rpm.)

- Approximately 140 kPa (1.4 bar, 1.2 kg/cm

2

, 17 psi) or less

Pressure Relief Valve

The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
The release port on the pressure relief valve automatically opens and releases refrigerant into the atmosphere
when the pressure of refrigerant in the system increases to an unusual level [more than 3,800 kPa (38.0 bar,
38.8 kg/cm

2

, 551 psi)].

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