2008 NISSAN TEANA heating

AIR CONDITIONER CONTROL
HAC-87
< SYMPTOM DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
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SYMPTOM DIAGNOSIS
AIR CONDITIONER CONTROL
Diagnosis Chart By SymptomINFOID:0000000003846383
Symptom Reference
A/C system does not activate.Go to Trouble Diagnosis Procedure for A/C Control Signal
Circuit.HAC-74, "
Diagnosis Proce-
dure"
A/C display dose not work. Go to Trouble Diagnosis Procedure for A/C Display.HAC-66, "A/C DISPLAY : Diag-
nosis Procedure"
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor.
(LAN)HAC-61, "
Diagnosis Proce-
dure"Mode door motor does not operate
normally.
Discharge air temperature does not
change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor.
(LAN)HAC-57, "
Diagnosis Proce-
dure" (driver side) or HAC-59,
"Diagnosis Procedure" (pas-
senger side) Air mix door motor does not operate
normally.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor.
(LAN)HAC-64, "
Diagnosis Proce-
dure"Intake door motor does not operate
normally.
Blower motor operation is malfunc-
tioning.Go to Trouble Diagnosis Procedure for Blower Motor.HAC-68, "
Diagnosis Proce-
dure"
Magnet clutch does not engage. Go to Trouble Diagnosis Procedure for Magnet Clutch.HAC-72, "Diagnosis Proce-
dure"
Insufficient cooling
Go to Trouble Diagnosis Procedure for Insufficient Cooling.HAC-88, "Inspection proce-
dure"No cool air comes out.
(Air flow volume is normal.)
Insufficient heating
Go to Trouble Diagnosis Procedure for Insufficient Heating.HAC-91, "
Inspection proce-
dure"No warm air comes out.
(Air flow volume is normal.)
Noise Go to Trouble Diagnosis Procedure for Noise.HAC-94, "
Inspection proce-
dure"
Memory function does not operate. Go to Trouble Diagnosis Procedure for Memory Function.HAC-96, "Inspection proce-
dure"

INSUFFICIENT HEATING
HAC-91
< SYMPTOM DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
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INSUFFICIENT HEATING
DescriptionINFOID:0000000003846388
Symptom
 Insufficient heating
 No warm air comes out. (Air flow volume is normal.)
Inspection procedureINFOID:0000000003846389
1.CHECK COOLING SYSTEM
1. Check engine coolant level and check for leakage. Refer to CO-8, "
Inspection".
2. Check radiator cap. Refer to CO-12, "
RADIATOR CAP : Inspection".
3. Check water flow sounds of engine coolant. Refer to CO-9, "
Refilling".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refill the engine coolant and repair or replace the parts according to the inspection results.
2.CHECK OPERATION
1. Press temperature control switch (driver side) and raise temperature setting to 32°C (90°F) after warming
up the engine.
2. Check that warm air blows from the outlets.
Is the inspection result normal?
YES >> END.
NO >> GO TO 3.
3.CHECK SETTING OF TEMPERATURE SETTING TRIMMER
Using CONSULT-III, check the setting of “TEMP SET CORRECT” on “WORK SUPPORT” of HVAC. Refer to
HAC-10, "
Temperature Setting Trimmer".
1. Check that the temperature setting trimmer is set to “− direction”.
NOTE:
The control temperature can be set by the temperature setting trimmer.
2. Set temperature control switch to “0”.
Are the malfunction solved?
YES >> Perform the setting separately if necessary. END.
NO >> GO TO 4.
4.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC is displayed in the trouble diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
HAC-42, "
DTC Logic" or HAC-43, "DTC Logic".
Is any DTC displayed?
YES >> Perform the diagnosis that is applicable to the sensor and the door motor. Refer to HAC-85, "DTC
Index".
NO >> GO TO 5.
5.CHECK WITH ACTIVE TEST OF CONSULT-III
1. Using CONSULT-III, perform “HVAC TEST” in “ACTIVE TEST” of HVAC to check each output device.
Refer to HAC-38, "
CONSULT-III Function".
NOTE:
Perform the ACTIVE TEST after starting the engine because the compressor is operated.
2. Refer to the table and check the outlet, inlet, air flow temperature, blower motor control signal, magnet
clutch operation, and air mix ratio. Visually check each operating condition, by listening for noise, touching
air outlets with a hand, etc.

HAC-92
< SYMPTOM DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
INSUFFICIENT HEATING
NOTE:
 Perform the inspection of each output device after starting the engine because the compressor is oper-
ated.
 When choosing to “MODE 7”, error message is displayed but it is not malfunction.
Does it operate normally?
YES >> GO TO 6.
NO-1 >> Air outlet does not change. Refer to HAC-61, "
Diagnosis Procedure".
NO-2 >> Air inlet does not change. Refer to HAC-64, "
Diagnosis Procedure".
NO-3 >> Discharge air temperature does not change (driver side). Refer to HAC-57, "
Diagnosis Proce-
dure".
NO-4 >> Discharge air temperature does not change (passenger side). Refer to HAC-59, "
Diagnosis Pro-
cedure".
NO-5 >> Blower motor does not operate normally. Refer to HAC-68, "
Diagnosis Procedure".
NO-6 >> Magnet clutch does not operate. Refer to HAC-72, "
Diagnosis Procedure".
6.CHECK AIR LEAKAGE FROM DUCT
Check duct and nozzle, etc, of the A/C system for air leakage.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace parts according to the inspection results.
7.CHECK HEATER HOSE INSTALLATION CONDITION
Check the heater hose installation condition visually (for twists, crushes, etc.).
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace parts according to the inspection results.
8.CHECK TEMPERATURE OF HEATER HOSE
Te s t i t e m
MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6 MODE 7
Mode door position VENT B/L1 B/L2 AUTO FOOT D/F DEF -
Intake door position REC REC 20% FRE FRE FRE FRE -
Air mix door position
(driver & passenger
side)FULL COLDFULL
COLDFULL HOT FULL HOT FULL HOT FULL HOT -
Blower motor duty ratio 37% 91% 65% 65% 65% 91% -
Compressor (Magnet
clutch)ON ON OFF OFF ON ON -
JPIIA0877GB

INSUFFICIENT HEATING
HAC-93
< SYMPTOM DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
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1. Check the temperature of inlet hose and outlet hose of heater core.
2. Check that the inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the
inlet side.
CAUTION:
Always perform the temperature inspection in a short period of time because the engine coolant
temperature is very hot.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Replace the heater core after performing the procedures after the cooling system inspection. GO
TO 1.
9.REPLACE HEATER CORE
Replace the heater core. Refer to heater core. Refer to VTL-43, "
Exploded View".
Are the malfunction solved?
YES >> END.
NO >> Perform the procedures again after the cooling system inspection. GO TO 1.

INSPECTION AND ADJUSTMENT
HAC-109
< BASIC INSPECTION >[WITH 7 INCH DISPLAY]
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NO >> Mode door system malfunction: HAC-186, "Diagnosis Procedure".
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-189, "
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-197, "
Diagnosis Procedure".
6.CHECK WITH TEMPERATURE SETTING LOWERED
1. Operate the compressor.
2. Operate the temperature control dial (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-228, "
Inspection procedure".
7.CHECK WITH TEMPERATURE SETTING RAISED
1. Operate the temperature control dial (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-231, "
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 dial (driver side). Check that the discharge air temperature (driver side)
changes.
3. Operate the temperature control dial (passenger side). Check that the discharge air temperature (passen-
ger 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-226, "
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 dial (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-226, "
Diagnosis Chart By Symptom" and perform the appropriate diagnosis.

INSPECTION AND ADJUSTMENT
HAC-113
< BASIC INSPECTION >[WITH 7 INCH DISPLAY]
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1. Press the intake switch. Indicator is turned ON (REC).
2. Press the intake switch again. Indicator is turned OFF (FRE).
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-189, "
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-197, "
Diagnosis Procedure".
6.CHECK WITH TEMPERATURE SETTING LOWERED
1. Operate the compressor.
2. Operate the temperature control dial (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-228, "
Inspection procedure".
7.CHECK WITH TEMPERATURE SETTING RAISED
1. Operate the temperature control dial (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-231, "
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 dial (driver side). Check that the discharge air temperature (driver side)
changes.
3. Operate the temperature control dial (passenger side). Check that the discharge air temperature (passen-
ger 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-226, "
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 dial (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-226, "
Diagnosis Chart By Symptom" and perform the appropriate diagnosis.
10.CHECK PLASMACLUSTER ION CONTROL FUNCTION
1. Turn ignition switch OFF and restart the engine.

HAC-226
< SYMPTOM DIAGNOSIS >[WITH 7 INCH DISPLAY]
AIR CONDITIONER CONTROL
SYMPTOM DIAGNOSIS
AIR CONDITIONER CONTROL
Diagnosis Chart By SymptomINFOID:0000000003884798
*:WITH INTELLIGENT AIR CONDITIONER SYSTEM
Symptom Reference
A/C system does not activate.Go to Trouble Diagnosis Procedure for Power Supply And
Ground Circuit.HAC-191, "
A/C AUTO AMP. :
Diagnosis Procedure"
A/C system cannot be controlled.Go to Trouble Diagnosis Procedure for Preset Switch Sys-
tem.AV- 1 6 4 , "
Symptom Table"
(DISPLAY AND AUDIO SYS-
TEM), AV- 3 7 2 , "
Symptom Ta-
ble" (BOSE AUDIO WITHOUT
NAVIGATION) or AV-640,
"Symptom Table" (BOSE AU-
DIO WITH NAVIGATION).
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor.
(LAN)HAC-186, "
Diagnosis Proce-
dure"Mode door motor does not operate
normally.
Discharge air temperature does not
change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor.
(LAN)HAC-182, "
Diagnosis Proce-
dure" (driver side) or HAC-184,
"Diagnosis Procedure" (pas-
senger side) Air mix door motor does not operate
normally.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor.
(LAN)HAC-189, "
Diagnosis Proce-
dure"Intake door motor does not operate
normally.
Blower motor operation is malfunc-
tioning.Go to Trouble Diagnosis Procedure for Blower Motor.HAC-193, "
Diagnosis Proce-
dure"
Magnet clutch does not engage. Go to Trouble Diagnosis Procedure for Magnet Clutch.HAC-197, "Diagnosis Proce-
dure"
Insufficient cooling
Go to Trouble Diagnosis Procedure for Insufficient Cooling.HAC-228, "Inspection proce-
dure"No cool air comes out.
(Air flow volume is normal.)
Insufficient heating
Go to Trouble Diagnosis Procedure for Insufficient Heating.HAC-231, "
Inspection proce-
dure"No warm air comes out.
(Air flow volume is normal.)
Noise Go to Trouble Diagnosis Procedure for Noise.HAC-234, "
Inspection proce-
dure"
Memory function does not operate. Go to Trouble Diagnosis Procedure for Memory Function.HAC-236, "Inspection proce-
dure"
Plasmacluster system does not op-
erate.*Go to Trouble Diagnosis Procedure for Plasmacluster sys-
tem.HAC-227, "
WITH INTELLI-
GENT AIR CONDITIONER
SYSTEM : Inspection proce-
dure"

INSUFFICIENT HEATING
HAC-231
< SYMPTOM DIAGNOSIS >[WITH 7 INCH DISPLAY]
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INSUFFICIENT HEATING
DescriptionINFOID:0000000003884803
Symptom
 Insufficient heating
 No warm air comes out. (Air flow volume is normal.)
Inspection procedureINFOID:0000000003884804
1.CHECK COOLING SYSTEM
1. Check engine coolant level and check for leakage. Refer to CO-8, "
Inspection".
2. Check radiator cap. Refer to CO-12, "
RADIATOR CAP : Inspection".
3. Check water flow sounds of engine coolant. Refer to CO-9, "
Refilling".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refill the engine coolant and repair or replace the parts according to the inspection results.
2.CHECK OPERATION
1. Press temperature control dial (driver side) and raise temperature setting to 32°C (90°F) after warming up
the engine.
2. Check that warm air blows from the outlets.
Is the inspection result normal?
YES >> END.
NO >> GO TO 3.
3.CHECK SETTING OF TEMPERATURE SETTING TRIMMER
Using CONSULT-III, check the setting of “TEMP SET CORRECT” on “WORK SUPPORT” of HVAC. Refer to
HAC-110, "
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : Temperature Setting Trimmer" (WITH-
OUT INTELLIGENT AIR CONDITIONER SYSTEM) or HAC-114, "
WITH INTELLIGENT AIR CONDITIONER
SYSTEM : Temperature Setting Trimmer" (WITH INTELLIGENT AIR CONDITIONER SYSTEM).
1. Check that the temperature setting trimmer is set to “− direction”.
NOTE:
The control temperature can be set by the temperature setting trimmer.
2. Set temperature control dial to “0”.
Are the malfunction solved?
YES >> Perform the setting separately if necessary. END.
NO >> GO TO 4.
4.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC is displayed in the trouble diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
HAC-164, "
DTC Logic" or HAC-165, "DTC Logic".
Is any DTC displayed?
YES >> Perform the diagnosis that is applicable to the sensor and the door motor. Refer to HAC-212,
"WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : DTC Index" (WITHOUT INTELLI-
GENT AIR CONDITIONER SYSTEM) or HAC-224, "
WITH INTELLIGENT AIR CONDITIONER
SYSTEM : DTC Index" (WITH INTELLIGENT AIR CONDITIONER SYSTEM).
NO >> GO TO 5.
5.CHECK WITH ACTIVE TEST OF CONSULT-III
1. Using CONSULT-III, perform “HVAC TEST” in “ACTIVE TEST” of HVAC to check each output device.
Refer to HAC-156, "
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : CONSULT-III Function"
(WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM) or HAC-159, "WITH INTELLIGENT AIR CON-
DITIONER SYSTEM : CONSULT-III Function" (WITH INTELLIGENT AIR CONDITIONER SYSTEM).
NOTE: