cooling NISSAN TEANA 2008 Manual PDF

HA-40
< ON-VEHICLE REPAIR >
HIGH-PRESSURE FLEXIBLE HOSE
HIGH-PRESSURE FLEXIBLE HOSE
Exploded ViewINFOID:0000000003839908
Refer to HA-14, "Refrigerant Connection".
Removal and InstallationINFOID:0000000003839909
REMOVAL
1. Use refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Remove air duct. Refer to EM-26, "
Exploded View".
3. Disengage the tab, and then move radiator hose (1) to a position
where it does not inhibit (as shown in the figure).
1. High-pressure pipe 2. O-ring 3. Condenser
4. High-pressure flexible hose 5. Compressor 6. Low-pressure flexible hose
7. Low-pressure pipe 8. Heater & cooling unit assembly 9. Blower unit
10. Evaporator pipe assembly 11. Expansion valve 12. Evaporator
Refer to GI-4, "
Components" for symbols in the figure.
JPIIA0952GB
: Tab
JPIIA0954ZZ

HA-42
< ON-VEHICLE REPAIR >
LOW-PRESSURE PIPE
LOW-PRESSURE PIPE
Exploded ViewINFOID:0000000003839910
Refer to HA-14, "Refrigerant Connection".
Removal and InstallationINFOID:0000000003839911
REMOVAL
1. Use refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Disengage the tab, and then move power steering reservoir tank
(1) to a position where it does not inhibit work.
3. Move upper torque rod to a position where it dose not inhibit work. Refer to EM-67, "
Exploded View".
1. High-pressure pipe 2. O-ring 3. Condenser
4. High-pressure flexible hose 5. Compressor 6. Low-pressure flexible hose
7. Low-pressure pipe 8. Heater & cooling unit assembly 9. Blower unit
10. Evaporator pipe assembly 11. Expansion valve 12. Evaporator
Refer to GI-4, "
Components" for symbols in the figure.
JPIIA0952GB
: Tab
JPIIA0965ZZ

HA-44
< ON-VEHICLE REPAIR >
HIGH-PRESSURE PIPE
HIGH-PRESSURE PIPE
Exploded ViewINFOID:0000000003839912
Refer to HA-14, "Refrigerant Connection".
Removal and InstallationINFOID:0000000003839913
REMOVAL
1. Remove low-pressure pipe. Refer to HA-42, "Exploded View".
2. Disconnect high-pressure pipe (1) from expansion valve.
CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve
with suitable material such as vinyl tape to avoid the entry
of air.
1. High-pressure pipe 2. O-ring 3. Condenser
4. High-pressure flexible hose 5. Compressor 6. Low-pressure flexible hose
7. Low-pressure pipe 8. Heater & cooling unit assembly 9. Blower unit
10. Evaporator pipe assembly 11. Expansion valve 12. Evaporator
Refer to GI-4, "
Components" for symbols in the figure.
JPIIA0952GB
JPIIA0972ZZ

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

HAC-2
DTC Logic ...............................................................53
Diagnosis Procedure ..............................................54
Component Inspection ............................................55
B2632, B2633 AIR MIX DOOR MOTOR
(DRIVER SIDE) ..................................................
56
Description ..............................................................56
DTC Logic ...............................................................56
Diagnosis Procedure ..............................................57
B2634, B2635 AIR MIX DOOR MOTOR (PAS-
SENGER SIDE) ..................................................
58
Description ..............................................................58
DTC Logic ...............................................................58
Diagnosis Procedure ..............................................59
B2636, B2637, B2638, B2639, B2654, B2655
MODE DOOR MOTOR ......................................
60
Description ..............................................................60
DTC Logic ...............................................................60
Diagnosis Procedure ..............................................61
B263D B263E, B263F, B2656 INTAKE DOOR
MOTOR ..............................................................
63
Description ..............................................................63
DTC Logic ...............................................................63
Diagnosis Procedure ..............................................64
POWER SUPPLY AND GROUND CIRCUIT .....65
A/C AUTO AMP. .......................................................65
A/C AUTO AMP. : Diagnosis Procedure ................65
A/C CONTROL ..........................................................65
A/C CONTROL : Diagnosis Procedure ...................65
A/C DISPLAY ............................................................66
A/C DISPLAY : Diagnosis Procedure .....................66
A/C AUTO AMP. ................................................67
Description ..............................................................67
Component Function Check ...................................67
Diagnosis Procedure ..............................................67
BLOWER MOTOR .............................................68
Description ..............................................................68
Component Function Check .................................68
Diagnosis Procedure ..............................................68
Component Inspection ............................................71
MAGNET CLUTCH ............................................72
Description ..............................................................72
Component Function Check ...................................72
Diagnosis Procedure ..............................................72
A/C CONTROL SIGNAL CIRCUIT ....................74
Diagnosis Procedure ..............................................74
ECU DIAGNOSIS ........................................75
A/C AUTO AMP. ................................................75
Reference Value .....................................................75
Wiring Diagram - AIR CONDITIONER CONTROL
SYSTEM - ...............................................................
77
Fail-Safe ..................................................................84
DTC Inspection Priority Chart ...............................85
DTC Index ...............................................................85
SYMPTOM DIAGNOSIS ............................87
AIR CONDITIONER CONTROL ........................87
Diagnosis Chart By Symptom .................................87
INSUFFICIENT COOLING .................................88
Description ..............................................................88
Inspection procedure ..............................................88
INSUFFICIENT HEATING .................................91
Description ..............................................................91
Inspection procedure ..............................................91
NOISE ................................................................94
Description ..............................................................94
Inspection procedure ..............................................94
MEMORY FUNCTION DOES NOT OPERATE ...96
Description ..............................................................96
Inspection procedure ..............................................96
PRECAUTION ............................................97
PRECAUTIONS .................................................97
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
97
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect ...................................
97
Precaution for Procedure without Cowl Top Cover ...98
Precautions For Xenon Headlamp Service .............98
Working with HFC-134a (R-134a) ...........................98
General Refrigerant Precaution ..............................99
Refrigerant Connection ...........................................99
Service Equipment ................................................101
COMPRESSOR ................................................104
General Precautions .............................................104
FLUORESCENT LEAK DETECTOR ................105
General Precautions .............................................105
WITH 7 INCH DISPLAY
BASIC INSPECTION .................................
106
DIAGNOSIS AND REPAIR WORKFLOW ........106
Work Flow .............................................................106
INSPECTION AND ADJUSTMENT ..................108
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM ..................................................................
108
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Description & Inspection .....................
108
WITHOUT INTELLIGENT AIR CONDITIONER
SYSTEM : Temperature Setting Trimmer .............
110

HAC-5
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TEM : Wiring Diagram - AIR CONDITIONER
CONTROL SYSTEM - ...........................................
215
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Fail-Safe .....................................................
223
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : DTC Inspection Priority Chart ..................
224
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : DTC Index ..................................................
224
SYMPTOM DIAGNOSIS ............................226
AIR CONDITIONER CONTROL .......................226
Diagnosis Chart By Symptom ...............................226
PLASMACLUSTER SYSTEM DOES NOT OP-
ERATE ..............................................................
227
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM ..........................................................................
227
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Description ..................................................
227
WITH INTELLIGENT AIR CONDITIONER SYS-
TEM : Inspection procedure ..................................
227
INSUFFICIENT COOLING ...............................228
Description ............................................................228
Inspection procedure .............................................228
INSUFFICIENT HEATING ................................231
Description ............................................................231
Inspection procedure .............................................231
NOISE ..............................................................234
Description .............................................................234
Inspection procedure .............................................234
MEMORY FUNCTION DOES NOT OPERATE .236
Description .............................................................236
Inspection procedure .............................................236
PRECAUTION ............................................237
PRECAUTIONS ...............................................237
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................
237
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect .................................
237
Precaution for Procedure without Cowl Top Cover ..238
Precautions For Xenon Headlamp Service ...........238
Working with HFC-134a (R-134a) .........................238
General Refrigerant Precaution .............................239
Refrigerant Connection ..........................................239
Service Equipment ................................................241
COMPRESSOR ...............................................244
General Precautions ..............................................244
FLUORESCENT LEAK DETECTOR ..............245
General Precautions ..............................................245

INSPECTION AND ADJUSTMENT
HAC-9
< BASIC INSPECTION >[WITHOUT 7 INCH DISPLAY]
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4.CHECK INTAKE AIR
1. Press the REC switch. REC indicator is turned ON.
2. Press the FRE switch. FRE indicator is turned ON.
3. Listen for the intake door position change. (Slight change of blower sound can be heard.)
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and the intake door position is at
the FRE when the DEF is selected.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Intake door system malfunction: HAC-64, "
Diagnosis Procedure".
5.CHECK A/C SWITCH
1. Press the A/C switch.
2. The A/C switch indicator is turned ON.
Confirm that the compressor clutch engages (sound or visual inspection).
Is the inspection result normal?
YES >> GO TO 6.
NO >> Magnet clutch system malfunction: HAC-72, "
Diagnosis Procedure".
6.CHECK WITH TEMPERATURE SETTING LOWERED
1. Operate the compressor.
2. Operate the temperature control switch (driver side) and lower the temperature setting to 18°C (60°F).
3. Check that the cool air blows from the outlets.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Insufficient cooling: HAC-88, "
Inspection procedure".
7.CHECK WITH TEMPERATURE SETTING RAISED
1. Operate the temperature control switch (driver side) and raise the temperature setting to 32°C (90°F) after
warming up the engine.
2. Check that the warm air blows from the outlets.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Insufficient heating: HAC-91, "
Inspection procedure".
8.CHECK LEFT AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM FUNC-
TION
1. Press the DUAL switch, and then check that “DUAL” is shown on the display.
2. Operate the temperature control switch (driver side). Check that the discharge air temperature (driver
side) changes.
3. Operate the temperature control switch (passenger side). Check that the discharge air temperature (pas-
senger side) changes.
4. Press the DUAL switch, and then check that the temperature setting (LH/RH) is unified to the driver side
temperature setting.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Refer to HAC-87, "
Diagnosis Chart By Symptom" and perform the appropriate diagnosis.
9.CHECK AUTO MODE
1. Press the AUTO switch, and then check that “AUTO” is shown on the display.
2. Operate the temperature control switch (driver side). Check that the fan speed or outlet changes (the dis-
charge air temperature or fan speed varies depending on the ambient temperature, in-vehicle tempera-
ture, and temperature setting).
Is the inspection result normal?
YES >> GO TO 10.
NO >> Refer to HAC-87, "
Diagnosis Chart By Symptom" and perform the appropriate diagnosis.

B2578, B2579 IN-VEHICLE SENSOR
HAC-47
< COMPONENT DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
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B2578, B2579 IN-VEHICLE SENSOR
DescriptionINFOID:0000000003846332
In-vehicle Sensor
 The in-vehicle sensor (1) is located on instrument driver lower
panel.
 It converts variations in compartment air temperature drawn from
the aspirator into a resistance value. It is then input into the A/C
auto amp.
In-vehicle Sensor Circuit
Aspirator
The aspirator (1) is located on driver side of heater & cooling unit
assembly. It produces vacuum pressure due to air discharged from
the heater & cooling unit assembly, continuously taking compartment
air in the aspirator.
DTC LogicINFOID:0000000003846333
DTC DETECTION LOGIC
NOTE:
JPIIA1019ZZ
JPIIA0613GB
:Vehicle front
JPIIA0890ZZ
RJIA1804E