2014 NISSAN TEANA Service Manual

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NISSAN TEANA 2014 Service Manual
REFRIGERATION SYSTEM SYMPTOMSHA-19
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Both high and low pressure sides
are too low. • The area around evapora-
tor outlet does not become
co

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HA-20
< SYMPTOM DIAGNOSIS >
NOISE
NOISE
Symptom TableINFOID:0000000009463925
Symptom Noise source Probable cause Corrective action
Unusual noise from compressor
when A/C is ON. Inside of compressor

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REFRIGERANTHA-21
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PERIODIC MAINTENANCE
REFRIGERANT
DescriptionINFOID:0000000009463926
CONNECTION OF SERVICE TOOLS AND EQUIPMENT
Leak TestINF

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HA-22
< PERIODIC MAINTENANCE >
REFRIGERANT
4. Press UV lamp switch (5) and check A/C system for refrigerant leakage. (Where refrigerant leakage
occurs, fluorescent leak detec tion dye appears in gree

HA-22
< PERIODIC MAINTENANCE >
REFRIGERANT
4. Press UV lamp switch (5) and check A/C system for refrigerant leakage. (Where refrigerant leakage
occurs, fluorescent leak detec tion dye appears in green color.)
WARNING:
Do not look directly into UV lamp light source.
NOTE:
• For continuous operating time of UV lamp, follow the manufacturer operating instructions.
• Illuminate piping joints from different angles using UV lamp and check that there is no leakage.
• Use a mirror in area that is difficult to see to check refrigerant leakage.
• Refrigerant leakage from evaporator can be detected by soaking cotton swab or a similar material with
drain hose water and illuminating it using UV lamp.
• Dust, dirt and packing materials adhesive used for condenser, evaporator, and other locations may fluo- resce. Be careful not to misidentify leakage.
5. Repair or replace parts where refrigerant leakage occurs and wipe off fluorescent leak detection dye. NOTE:
Completely wipe off fluorescent leak detection dy e from gaps between parts, screw threads, and others
using a cotton swab or similar materials.
6. Use a UV lamp to check that no fluorescent leak detection dye remains after finishing work.
WARNING:
Do not look directly into UV lamp light source.
NOTE:
• For continuous operating time of UV lamp, follow the manufacturer operating instructions.
• Dust, dirt, and packing materials adhesive used for condenser, evaporator, and other locations may flu-
oresce. Be careful not to misidentify leakage.
CHECK REFRIGERANT LEAKAGE USING ELECTRICAL LEAK DETECTOR
WARNING:
Do not check refrigerant leakage while the engine is running.
CAUTION:
Be careful of the following it ems so that inaccurate checks or misidentifications are avoided.
• Do not allow refrigerant vapor, shop chemical vapor s, cigarette smoke or others around the vehicle.
• Always check refrigerant leakage in a low air flow en vironment so that refrigerant may not disperse
when leakage occurs.
1. Stop the engine.
2. Connect recovery/recycling/recharging equipment or manifold gauge set (J-39183-C) to A/C service
valve.
3. Check that A/C refrigerant pressure is 345 kPa (3.52 kg/cm
2, 50 psi) or more when temperature is 16 °C
(61 °F) or more. When pressure is lower than the specif ied value, recycle refrigerant completely and fill
refrigerant to the specified level.
NOTE:
Leakages may not be detected if A/C refrigerant pressure is 345 kPa (3.52 kg/cm
2, 50 psi) or less when
temperature is less than 16 °C (61 °F).
4. Clean area where refrigerant leakage check is performed and check refrigerant leakage along all surfaces of pipe connections and A/C system components us ing electrical leak detector (J-41995) probe.
CAUTION:
• Continue checking when a leakag e is found. Always continue and complete checking along all
pipe connections and A/C system components for additional leakage.
• When a leakage is detected, clean leakage area using compressed air and check again.
• When checking leakage of cooling unit inside, always clean inside of drain hose so that the
probe surface may not be exposed to water or dirt.
NOTE:
• Always check leakage starting from high-pressure side and continue to low-pressure side.
• When checking leakage of cooling unit inside, operate bl ower fan motor for 15 minutes or more at the
maximum fan speed while the engine is stopped, and then in sert electrical leak detector probe into drain
hose and hold for 10 minutes or more.
• When disconnecting shut-off valve that is connected to A/C service valve, always evacuate remaining
refrigerant so that misidentification can be avoided.
5. Repair or replace parts where refrigerant leak age is detected. (Leakage is detected but leakage area is
unknown.)
Revision: November 20132014 Altima NAM

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6. Start the engine and set A/C control in the following conditions. • A/C switch ON
• Air flow: VENT (ventilation)

REFRIGERANTHA-23
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6. Start the engine and set A/C control in the following conditions. • A/C switch ON
• Air flow: VENT (ventilation)
• Intake door position: Recirculation
• Temperature setting: Full cold
• Fan (blower) speed: Maximum speed set
7. Run the engine at approximately 1,500 rpm for 2 minutes or more.
8. Stop the engine. Check again for refrigerant leakage. Go to step 4. WARNING:
Be careful not to get burned when the engine is hot.
NOTE:
• Start refrigerant leakage check immediately after the engine is stopped.
• When refrigerant circulation is stopped, pressure on the low- pressure side rises gradually, and after this, pressure on the
high-pressure side falls gradually.
• The higher the pressure is, the easier it is to find the refriger-
ant leakage.
Recycle RefrigerantINFOID:0000000009463928
WARNING:
• Always use HFC-134a for A/C refrigerant. If CFC-12 is accidentally charged, compressor is damaged
due to insufficient lubrication.
• Always observe and follow precaution s described on refrigerant container. Incorrect handling may
result in an explosion of refrigerant co ntainer, frostbite or the loss of eyesight.
• Do not breathe A/C refrigerant and oil vapor or mi st. Exposure may irritate eyes, nose, or throat.
• Do not allow HFC-134a to be exposed to an open flame or others because it generates poisonous
gas when in contact with high temperatur e objects. Keep workshop well ventilated.
1. Perform oil return operation. Refer to HA-25, "Perform Oil Return Operation"
. (If refrigerant or oil leakage
is detected in a large amount, omit this step, and go to step 2.)
CAUTION:
Do not perform oil return operation if a large am ount of refrigerant or oil leakage is detected.
2. Check gauge pressure readings of recovery/recyc ling/recharging equipment. When remaining pressure
exists, recycle refrigerant from high-pressure hose and low-pressure hose.
NOTE:
Follow manufacturer instructions for the handling or maintenance of the equipment. Do not fill the equip-
ment with non-specified refrigerant.
3. Remove A/C service valve cap from the vehicle.
4. Connect recovery/recycling/recharging equipment to A/C service valve.
5. Operate recovery/recycling/recharging equipment , and recycle refrigerant from the vehicle.
6. Evacuate air for 10 minutes or more to remove any remaining refrigerant integrated to compressor oil, etc.
7. Refrigerant recycle operation is complete.
Charge RefrigerantINFOID:0000000009463929
WARNING:
• Always use HFC-134a for A/C refrigerant. If CFC-12 is accidentally charged, compressor is damaged
due to insufficient lubrication.
• Always observe and follow precaution s described on refrigerant container. Incorrect handling may
result in an explosion of refrigerant co ntainer, frostbite, or the loss of eyesight.
• Do not breathe A/C refrigerant and oil vapor or mi st. Exposure my irritate eyes, nose, or throat.
• Do not allow HFC-134a to be exposed to an open flame or others because it generates poisonous
gas when in contact with high temperatur e objects. Keep workshop well ventilated.
SHA839E
Revision: November 20132014 Altima NAM

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HA-24
< PERIODIC MAINTENANCE >
REFRIGERANT
1. Connect recovery/recycling/recharging equipment to the A/C service valve.
2. Operate recovery/recycling/recharging equipment, and evacuate air from A/C

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OIL
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OIL
DescriptionINFOID:0000000009463930
MAINTENANCE OF OIL LEVEL
The compressor oil is circulating in the system together wi th th

OIL
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OIL
DescriptionINFOID:0000000009463930
MAINTENANCE OF OIL LEVEL
The compressor oil is circulating in the system together wi th the refrigerant. It is necessary to fill compressor
with oil when replacing A/C system parts or when a large amount of refrigerant leakage is detected. It is impor-
tant to always maintain oil level within the spec ified level, otherwise the following conditions may occur:
• Insufficient oil amount: Stuck compressor
• Excessive oil amount: Insufficient coo ling (caused by insufficient heat exchange)
InspectionINFOID:0000000009463931
If a compressor is malfunctioning (internal noise, insufficient cooling), check the compressor oil.
1.COMPRESSOR OIL JUDGMENT
1. Remove the compressor. Refer to HA-30, "COMPRESSOR : Removal and Installation"
.
2. Sample compressor oil and judge below according to the figure.
Judgement result 1>>Replace compressor only.
Judgement result 2>>Replace compressor and liquid tank.
Perform Oil Return OperationINFOID:0000000009463932
CAUTION:
If a large amount of refrigerant or oil leakage is detected, do not perform oil return operation.
1. Start the engine and set to the following conditions: • Engine speed: Idling to 1,200 rpm
• A/C switch: ON
• Fan (blower) speed: Maximum speed set
• Intake door position: Recirculation
• Temperature setting: Full cold
2. Perform oil return operation for approximately 10 minutes.
3. Stop the engine.
4. Oil return operation is complete.
Oil Adjusting Procedure for Component s Replacement Except Compressor
INFOID:0000000009463933
Fill with oil for the amount that is calculated according to the following conditions.
Example: Oil amount to be added when replacing evaporator and liquid tank [m (US fl oz, Imp fl oz)] = 45
(1.5, 1.6) + 15 (0.5, 0.5) + α
Oil Type : A/C System Oil Type S
JSIIA0927GB
Conditions
Oil amount to be added to A/C system
m (US fl oz, Imp fl oz)
Replace evaporator 75 (2.5, 2.6)
Replace condenser 75 (2.5, 2.6)
Revision: November 20132014 Altima NAM

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HA-26
< PERIODIC MAINTENANCE >
OIL
Oil Adjusting Procedure fo r Compressor Replacement
INFOID:0000000009463934
1. Before connecting recovery/recycling equipment to vehicle, check recovery/recycling

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