Condition NISSAN TEANA 2008 Service Manual

HA-14
< PRECAUTION >
PRECAUTIONS
Ventilate work area before resuming service if accidental system discharge occurs. Additional health
and safety information may be obtained from refrigerant and lubricant manufacturers.
 Never release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant each time an air conditioning system is discharged.
 Wear always eye and hand protection (goggles and gloves) when working with any refrigerant or air
conditioning system.
 Never store or heat refrigerant containers above 52°C (126°F).
 Never heat a refrigerant container with an open flame; Place the bottom of the container in a warm
pail of water if container warming is required.
 Never intentionally drop, puncture, or incinerate refrigerant containers.
 Keep refrigerant away from open flames: poisonous gas is produced if refrigerant burns.
 Refrigerant displaces oxygen, therefore be certain to work in well ventilated areas to prevent suffo-
cation.
 Never pressure test or leakage test HFC-134a (R-134a) service equipment and/or vehicle air condi-
tioning systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a)
have been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause
injury or property damage. Additional health and safety information may be obtained from refriger-
ant manufacturers.
Refrigerant ConnectionINFOID:0000000003799207
A new type refrigerant connection has been introduced to all refrigerant lines except the following locations.
 Expansion valve to evaporator
 Refrigerant pressure sensor to liquid tank
O-RING AND REFRIGERANT CONNECTION
CAUTION:
The new and former refrigerant connections use different O-ring configurations. Never confuse O-
rings since they are not interchangeable. Refrigerant may leak at the connection if a wrong O-ring is
installed.
F. Former type refrigerant connection N. New type refrigerant connection
:O-ring size
JPIIA0986ZZ

PRECAUTIONS
HA-15
< PRECAUTION >
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WARNING:
Check that all refrigerant is discharged into the recycling equipment and the pressure in the system is
less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it.
CAUTION:
Observe the following when replacing or cleaning refrigerant cycle components.
 Store it in the same way at it is when mounted on the car when the compressor is removed. Failure
to do so causes lubricant to enter the low-pressure chamber.
 Use always a torque wrench and a back-up wrench when connecting tubes.
 Plug immediately all openings to prevent entry of dust and moisture after disconnecting tubes.
 Connect the pipes at the final stage of the operation when installing an air conditioner in the vehicle.
Never remove the seal caps of pipes and other components until just before required for connection.
 Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.
 Remove thoroughly moisture from the refrigeration system before charging the refrigerant.
 Replace always used O-rings.
 Apply lubricant to circle of the O-rings shown in illustration when connecting tube. Be careful not to
apply lubricant to threaded portion.
 O-ring must be closely attached to the groove portion of tube.
 Be careful not to damage O-ring and tube when replacing the O-ring.
 Connect tube until a click can be heard. Then tighten the nut or bolt by hand. Check that the O-ring is
installed to tube correctly.
Connection type Piping connection point Part number QTY O-ring size
NewLow-pressure flexible hose to low-pressure pipe 92474 N8210 1 19
High-pressure pipe to condenser pipe assembly (Outlet) 92471 N8210 1 8
Condenser pipe assembly (Inlet) to high-pressure flexible
hose92472 N8210 1 12
Condenser assembly to condenser pipe as-
semblyInlet 92472 N8210 1 12
Outlet 92471 N8210 1 8
Low-pressure pipe to expansion valve 92473 N8210 1 16
High-pressure pipe to expansion valve 92471 N8210 1 8
Compressor to low-pressure flexible hose 92474 N8210 1 19
Compressor to high-pressure flexible hose 92472 N8210 1 12
Liquid tank to condenser assemblyInlet
92471 N82101
8
Outlet 1
FormerRefrigerant pressure sensor to liquid tank J2476 89956 1 10
Expansion valve to evaporator pipe assemblyInlet 92475 71L00 1 12
Outlet 92475 72L00 1 16
Evaporator to evaporator pipe assemblyInlet 92475 71L00 1 12
Outlet 92475 72L00 1 16
Name : NISSAN A/C System Oil Type S

HA-16
< PRECAUTION >
PRECAUTIONS
 Perform leakage test and make sure that there is no leakage from connections after connecting line.
Disconnect that line and replace the O-ring when the refrigerant leaking point is found. Then tighten
connections of seal seat to the specified torque.
Service EquipmentINFOID:0000000003795889
RECOVERY/RECYCLING EQUIPMENT
Be certain to follow the manufacturer’s instructions for machine operation and machine maintenance. Never
introduce any refrigerant other than that specified into the machine.
ELECTRICAL LEAK DETECTOR
Be certain to follow the manufacturer’s instructions for tester operation and tester maintenance.
VACUUM PUMP
The lubricant contained inside the vacuum pump is not compatible
with the specified lubricant for HFC-134a (R-134a) A/C systems.
The vent side of the vacuum pump is exposed to atmospheric pres-
sure. So the vacuum pump lubricant may migrate out of the pump
into the service hose. This is possible when the pump is switched
OFF after evacuation (vacuuming) and hose is connected to it.
To prevent this migration, use a manual valve placed near the hose-
to-pump connection, as per the following.
 Vacuum pumps usually have a manual isolator valve as part of the
pump. Close this valve to isolate the service hose from the pump.
 Use a hose equipped with a manual shut-off valve near the pump
end for pumps without an isolator. Close the valve to isolate the
hose from the pump.
 Disconnect the hose from the pump if the hose has an automatic
shut-off valve. As long as the hose is connected, the valve is open
and lubricating oil may migrate.
Some one-way valves open when vacuum is applied and close
under no vacuum condition. Such valves may restrict the pump’s
ability to pull a deep vacuum and are not recommended.
MANIFOLD GAUGE SET
RHA861F
RHA270DA

REFRIGERANT
HA-25
< ON-VEHICLE MAINTENANCE >
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WARNING:
Never breath A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and throat.
Use only approved recovery/recycling recharging equipment to discharge HFC-134a (R-134a) refriger-
ant. Ventilate work area before resuming service if accidental system discharge occurs. Additional
health and safety information may be obtained from refrigerant and lubricant manufacturers.
1.CHECK A/C SYSTEM
1. Check that A/C system operates normally. Refer to the following.
-HAC-8, "
Description & Inspection" (WITHOUT 7 INCH DISPLAY)
-HAC-108, "
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : Description & Inspection" [WITH 7
INCH DISPLAY (WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM)]
-HAC-112, "
WITH INTELLIGENT AIR CONDITIONER SYSTEM : Description & Inspection" [WITH 7 INCH
DISPLAY (WITH INTELLIGENT AIR CONDITIONER SYSTEM)]
2. Check if there is a large amount of leakage of refrigerant or oil.
CAUTION:
Never perform the lubricant return operation if a large amount of leakage of lubricant is detected.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check for refrigerant leakage. Refer to HA-32, "
Inspection".
2.LUBRICANT RETURN OPERATION
1. Start the engine and run it as follows.
- Engine speed: Idle - 1,200 rpm
- A/C switch: ON
- Blower speed: Max. position
- Air inlet: Recirculation (REC)
- Set temperature: FULL HOT
2. Perform lubricant return operation for approximately 10 minutes.
3. Stop the engine.
>> GO TO 3.
3.CHECK RECOVERY/RECYCLING RECHARGING EQUIPMENT
1. Operate recovery/recycling recharging equipment.
CAUTION:
 Follow the instructions of the manufacturer for the handling or maintenance of the equipment.
 Never fill the equipment with undesignated refrigerant.
2. Check the gauge pressure of recovery/recycling recharging equipment.
Is there pressure?
YES >> GO TO 4.
NO >> GO TO 5.
4.DISCHARGE REFRIGERANT INSIDE PIPES
Discharge the refrigerant from the high-pressure hose and low-pressure hose of recovery/recycling recharging
equipment.
>> GO TO 5.
5.CONNECT RECOVERY/RECYCLING RECHARGING EQUIPMENT
1. Remove the service valve caps from the vehicle.
2. Connect recovery/recycling recharging equipment to the service valves.
>> GO TO 6.
6.DISCHARGE REFRIGERANT FROM THE VEHICLE
Operate recovery/recycling recharging equipment to discharge the refrigerant from the vehicle.

HA-28
< ON-VEHICLE MAINTENANCE >
LUBRICANT
LUBRICANT
Maintenance of Lubricant QuantityINFOID:0000000003795916
The lubricant in the compressor circulates through the system the refrigerant. Add lubricant to compressor
when replacing any component or after a large refrigerant leakage occurred. It is important to maintain the
specified amount.
If lubricant quantity is not maintained properly, the following malfunctions may result:
 Lack of lubricant: May lead to a seized compressor.
 Excessive lubricant: Inadequate cooling (thermal exchange interference)
LUBRICANT
LUBRICANT RETURN OPERATION
Adjust the lubricant quantity according to the test group shown below.
1.CHECK LUBRICANT RETURN OPERATION
Can lubricant return operation be performed?
 A/C system works normally.
 There is no evidence of a large amount of lubricant leakage.
CAUTION:
Never perform the lubricant return operation if excessive lubricant leakage is detected.
Is it successful?
YES >> GO TO 2.
NO >> GO TO 3.
2.PERFORM LUBRICANT RETURN OPERATION
1. Start the engine, and set to the following conditions:
- Engine speed: Idling to 1,200 rpm
- A/C switch: ON
- Blower speed: Max. position
- Set temperature: FULL HOT
- Intake position: Recirculation (REC)
2. Perform lubricant return operation for approximately 10 minutes.
3. Stop the engine.
>> GO TO 3.
3.CHECK REPLACEMENT PART
Should the compressor be replaced?
YES >> Refer to HA-29, "Lubricant Adjusting Procedure for Compressor Replacement".
NO >> Refer to HA-28, "
Lubricant Adjusting Procedure for Components Replacement Except Compres-
sor".
Lubricant Adjusting Procedure for Components Replacement Except Compressor
INFOID:0000000003795917
Add the correct amount of lubricant to the system after replacing any of the following major components.
Amount of lubricant to be added:Name : NISSAN A/C System Oil Type S
Part replacedLubricant to be added to system
Remarks
Amount of lubricant
m (Imp fl oz.)
Evaporator 75 (2.6) —
Condenser 35 (1.2) —
Liquid tank 10 (0.4) —

HA-30
< ON-VEHICLE MAINTENANCE >
REFRIGERATION SYSTEM
REFRIGERATION SYSTEM
InspectionINFOID:0000000003795977
1.CHECK BLOWER MOTOR OPERATION
Check blower motor operation. Refer to the following.
HAC-68, "
ComponentFunctionCheck" (WITHOUT 7 INCH DISPLAY)
HAC-193, "
ComponentFunctionCheck" (WITH 7 INCH DISPLAY)
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the parts according to the inspection results.
2.CHECK COMPRESSOR OPERATION
Check compressor operation. Refer to the following.
HAC-72, "
Component Function Check" (WITHOUT 7 INCH DISPLAY)
HAC-197, "
Component Function Check" (WITH 7 INCH DISPLAY)
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the parts according to the inspection results.
3.CHECK REFRIGERANT CYCLE PRESSURE
Connect recovery/recycling recharging equipment to the vehicle and perform the diagnosis with the gauge
pressure. Refer to HA-8, "
Trouble Diagnosis For Unusual Pressure".
Is the inspection result normal?
YES >> Perform the performance test. Refer to HA-30, "Performance Chart".
NO >> Repair or replace the parts according to the inspection results.
Performance ChartINFOID:0000000003795978
TEST CONDITION
Testing must be performed as per the following:
TEST READING
Recirculating-to-discharge Air Temperature Table
Vehicle condition Indoors or in the shade (in a well-ventilated place)
Doors Closed
Door windows Open
Hood Open
Temperature control switch or dial Max. COLD
Mode switch
(Ventilation) set
Intake switch
(Recirculation) set
Fan (blower) speedMax. speed set
Engine speed Idle speed
Operate the air conditioning system for 10 minutes before taking measurements.
Inside air (Recirculating air) at blower assembly inlet
Discharge air temperature at center ventilator
°C (°F) Relative humidity
%Air temperature
°C (°F)
50 - 6025 (77) 8.4 - 10.9 (47 - 52)
30 (86) 12.3 - 15.3 (54 - 60)
35 (95) 15.8 - 19.2 (60 - 67)

HA-32
< ON-VEHICLE MAINTENANCE >
FLUORESCENT LEAK DETECTOR
FLUORESCENT LEAK DETECTOR
InspectionINFOID:0000000003795981
CHECKING SYSTEM FOR LEAKAGES USING THE FLUORESCENT LEAK DETECTOR
1. Check A/C system for leakages using the UV lamp and safety goggles (SST: J-42220) in a low sunlight
area (area without windows preferable). Illuminate all components, fittings and lines. The dye appears as
a bright green/yellow area at the point of leakage. Fluorescent dye observed at the evaporator drain open-
ing indicates an evaporator core assembly (tubes, core or expansion valve) leakage.
2. Use an adjustable mirror or wipe the area with a clean shop rag or cloth, with the UV lamp for dye residue
if the suspected area is difficult to see.
3. Remove any residual dye using dye cleaner (SST: J-43872) to prevent future misdiagnosis after the leak-
age is repaired.
4. Perform a system performance check and verify the leakage repair with an approved electrical leak detec-
tor.
NOTE:
Other gases in the work area or substances on the A/C components, for example, anti-freeze, windshield
washer fluid, solvents and lubricants, may falsely trigger the leak detector. Make sure the surfaces to be
checked are clean.
Clean with a dry cloth or blow off with shop air.
Do not allow the sensor tip of the detector to contact with any substance. This may also cause false readings
and may damage the detector.
DYE INJECTION
(This procedure is only necessary when recharging the system or when the compressor has seized and was
replaced.)
1. Check A/C system static (at rest) pressure. Pressure must be at least 345 kPa (3.45 bar, 3.52 kg/cm
2, 50
psi).
2. Pour one bottle (1/4 ounce / 7.4 cc) of the A/C refrigerant dye into the injector tool (SST: J-41459).
3. Connect the injector tool to the A/C low-pressure side service valve.
4. Start the engine. Then switch A/C ON.
5. Inject one bottle (1/4 ounce / 7.4 cc) of fluorescent dye through the low-pressure service valve using dye
injector tool (SST: J-41459) (refer to the manufacture’s operating instructions) when the A/C operating
(compressor running).
6. Disconnect the injector tool from the service valve with the engine still running.
CAUTION:
Be careful when replacing the A/C system or a component, pour the dye directly into the open sys-
tem connection and proceed with the service procedures.
7. Operate the A/C system for a minimum of 20 minutes to mix the dye with the system oil. Depending on the
leakage size, operating conditions and location of the leakage, it may take from minutes to days for the
dye to penetrate a leakage and become visible.
8. Attach a blue label if necessary.

HA-52
< ON-VEHICLE REPAIR >
EVAPORATOR
EVAPORATOR
Exploded ViewINFOID:0000000003825218
1. Ventilator seal 2. Defroster seal 3. Distributor upper case
4. Center case 5. Heater & cooling unit case cover 6. Foot duct 1 (right)
7. Foot duct 2 (right) 8. Air mix door motor (passenger side) 9. Evaporator pipe assembly
10. Expansion valve 11. O-ring 12. Evaporator
13. Filter cover 14. Air conditioner filter 15. Case packing
16. Heater & cooling unit case (right) 17. Cooler pipe grommet 18. Grommet
19. Heater pipe grommet 20. Heater pipe support 21. Drain hose
22. Heater & cooling unit case (left) 23. Air mix door motor (driver side) 24. Heater core
25. Heater pipe cover 26. Foot duct 2 (left) 27. Foot duct 1 (left)
28. Aspirator hose 29. Aspirator 30. Mode door motor
31. Main link 32. Rod link 33. Ventilator door link
34. Mode door lever 35. Ventilator door lever 36. Max. cool door link
JPIIA0906GB

HA-54
< ON-VEHICLE REPAIR >
EVAPORATOR PIPE ASSEMBLY
EVAPORATOR PIPE ASSEMBLY
Exploded ViewINFOID:0000000003825219
1. Ventilator seal 2. Defroster seal 3. Distributor upper case
4. Center case 5. Heater & cooling unit case cover 6. Foot duct 1 (right)
7. Foot duct 2 (right) 8. Air mix door motor (passenger side) 9. Evaporator pipe assembly
10. Expansion valve 11. O-ring 12. Evaporator
13. Filter cover 14. Air conditioner filter 15. Case packing
16. Heater & cooling unit case (right) 17. Cooler pipe grommet 18. Grommet
19. Heater pipe grommet 20. Heater pipe support 21. Drain hose
22. Heater & cooling unit case (left) 23. Air mix door motor (driver side) 24. Heater core
25. Heater pipe cover 26. Foot duct 2 (left) 27. Foot duct 1 (left)
28. Aspirator hose 29. Aspirator 30. Mode door motor
31. Main link 32. Rod link 33. Ventilator door link
34. Mode door lever 35. Ventilator door lever 36. Max. cool door link
JPIIA0906GB

EXPANSION VALVE
HA-57
< ON-VEHICLE REPAIR >
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EXPANSION VALVE
Exploded ViewINFOID:0000000003825220
1. Ventilator seal 2. Defroster seal 3. Distributor upper case
4. Center case 5. Heater & cooling unit case cover 6. Foot duct 1 (right)
7. Foot duct 2 (right) 8. Air mix door motor (passenger side) 9. Evaporator pipe assembly
10. Expansion valve 11. O-ring 12. Evaporator
13. Filter cover 14. Air conditioner filter 15. Case packing
16. Heater & cooling unit case (right) 17. Cooler pipe grommet 18. Grommet
19. Heater pipe grommet 20. Heater pipe support 21. Drain hose
22. Heater & cooling unit case (left) 23. Air mix door motor (driver side) 24. Heater core
25. Heater pipe cover 26. Foot duct 2 (left) 27. Foot duct 1 (left)
28. Aspirator hose 29. Aspirator 30. Mode door motor
31. Main link 32. Rod link 33. Ventilator door link
34. Mode door lever 35. Ventilator door lever 36. Max. cool door link
JPIIA0906GB