Nissan X-Trail 32. Manual — part 1365

REFRIGERATION SYSTEM SYMPTOMS

HA-119

< SYMPTOM DIAGNOSIS >

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Both high- and low-pressure sides
are too low.

• The area around evapora-

tor outlet does not become
cold.

• The area around evapora-

tor inlet becomes frosted.

Clogged expansion valve.
• Breakage of temperature

sensor.

• Clogging by foreign material.

Eliminate foreign material from
expansion valve, or replace it.

• There is a temperature dif-

ference between the areas
around outlet and inlet
pipes of liquid tank.

• Liquid tank becomes frost-

ed.

Malfunction in inner liquid tank
(clogged strainer).

Replace condenser.

Evaporator becomes frosted.

Clogged or crushed low-pres-
sure pipe.

Repair or replace malfunction-
ing parts.

Malfunction in intake air tem-
perature sensor.

Check intake sensor system.
Refer to

HAC-81, "Diagnosis

Procedure"

(AUTOMATIC AIR

CONDITIONING),

HAC-192,

"Diagnosis Procedure"

(MANU-

AL AIR CONDITIONING).

There is a small temperature
difference between the high
and low pressure pipes for re-
frigerant cycle.

• Shortage of refrigerant.
• Leakage of refrigerant.

• Check for leakage.
• Collect all refrigerant, evacu-

ate refrigerant cycle again,
and then refill it with the spec-
ified amount of refrigerant.

Low-pressure side sometimes be-
comes negative.

• Sometimes the area

around evaporator outlet
does not become cold.

• Sometimes the area

around evaporator inlet is
frosted.

• Icing caused by the mixing of

water in cooler cycle.

• Deteriorated dryer in liquid

tank.

• Collect all refrigerant.
• Evacuate refrigerant cycle

completely, and then refill it
with the specified amount of
refrigerant. At this time, al-
ways replace condenser.

Hunting in high-pressure side.

There is no temperature dif-
ference between high- and
low-pressure sides.

Malfunctioning variable valve
in compressor.

• Replace compressor.
• Check ECV system. Refer to

HAC-113, "Diagnosis Proce-
dure"

(AUTOMATIC AIR

CONDITIONING),

HAC-212,

"Diagnosis Procedure"

(MANUAL AIR CONDITION-
ING).

Gauge indication

Refrigerant cycle

Probable cause

Corrective action

AC353A

AC354A

HA-120

< SYMPTOM DIAGNOSIS >

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NOISE

NOISE

Symptom Table

INFOID:0000000011006118

Symptom

Noise source

Probable cause

Corrective action

Unusual noise from compressor
when A/C is ON.

Inside of compressor

Wear, breakage, or clogging of foreign
material in inner parts.

Check compressor oil. Re-
fer to

HA-113, "Inspection"

.

Magnet clutch

Contact of clutch disc with pulley.

Check clearance between
clutch disc and pulley. Refer
to

HA-122, "Inspection"

.

Compressor body

Loosened compressor mounting bolts.

Check bolts for tightness.
Refer to

HA-121, "Exploded

View"

.

Unusual noise from cooler piping.

Cooler piping (pipe and
flexible hose)

Improper installation of clip and brack-
et.

Check the installation condi-
tion of the cooler piping. Re-
fer to

HA-123, "Exploded

View"

.

Unusual noise from expansion
valve when A/C is ON.

Expansion valve

Shortage of refrigerant.

• Check for leakage.
• Collect all refrigerant,

evacuate refrigerant cycle
again, and then refill it
with the specified amount
of refrigerant.

Wear, breakage, or clogging of foreign
material in inner parts.

Eliminate foreign material
from expansion valve, or re-
place it.

Unusual noise from belt.

—

Loosened belt

Check belt tension. Refer to

EM-275, "Drive belt"

.

Internal compressor parts get locked

Replace compressor.

COMPRESSOR

HA-121

< REMOVAL AND INSTALLATION >

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REMOVAL AND INSTALLATION

COMPRESSOR

Exploded View

INFOID:0000000011006119

Removal and Installation

INFOID:0000000011006120

CAUTION:

Perform lubricant return operation before each refrigeration system disassembly. However, if a large
amount of refrigerant or lubricant is detected, never perform lubricant return operation. Refer to

HA-

113, "Perform Lubricant Return Operation"

.

REMOVAL

1.

Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to

HA-111,

"Recycle Refrigerant"

.

2.

Remove auto-tensioner. Refer to

EM-173, "Removal and Installation"

.

3.

Remove mounting bolt

, and then disconnect low-pressure

flexible hose

from compressor.

CAUTION:

Cap or wrap the joint of the A/C piping and compressor with
suitable material such as vinyl tape to avoid the entry of air.

Compressor

: N·m (kg-m, ft-lb)

JSIIA1976GB

: Vehicle front

JMIIA3324ZZ

HA-122

< REMOVAL AND INSTALLATION >

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COMPRESSOR

4.

Remove mounting bolt

, and then disconnect high-pressure

flexible hose

from compressor.

CAUTION:

Cap or wrap the joint of the A/C piping and compressor with
suitable material such as vinyl tape to avoid the entry of air.

5.

Disconnect harness connector and remove mounting bolts, and then remove compressor.

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:

• Replace O-rings with new ones. Then apply compressor oil to them when installing.
• Check for leakages when recharging refrigerant.
• Check tension of the drive belt after installing compressor. Refer to

EM-167, "Adjustment"

.

Inspection

INFOID:0000000011006122

CHECK DISC TO PULLEY CLEARANCE

Check the clearance (B) between pulley assembly

and clutch disc

along the entire periphery with a feeler gauge (A).

CAUTION:

Replace compressor if specified clearance is not obtained,
replace adjusting spacer and readjust.

: Vehicle front

JMIIA3325ZZ

Clearance

: Refer to

HA-139, "Compressor"

.

SJIA1918E