Nissan X-Trail 32. Instruction — 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
(AUTOMATIC AIR
CONDITIONING),
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),
(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
Magnet clutch
Contact of clutch disc with pulley.
Check clearance between
clutch disc and pulley. Refer
to
.
Compressor body
Loosened compressor mounting bolts.
Check bolts for tightness.
Refer to
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
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
.
Internal compressor parts get locked
Replace compressor.
COMPRESSOR
HA-121
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REMOVAL AND INSTALLATION
COMPRESSOR
Exploded View
INFOID:0000000011006119
Removal and Installation
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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
113, "Perform Lubricant Return Operation"
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Refer to
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
.
Inspection
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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
SJIA1918E
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