NISSAN TEANA 2008 Service Manual

A/C AUTO AMP.
HAC-83
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JCIWM0217GB

HAC-84
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A/C AUTO AMP.
Fail-Safe
INFOID:0000000003926389
FAIL-SAFE FUNCTION
If a communication error exists between the A/C auto amp. and A/C control for 30 seconds or longer, air con-
ditioner is controlled under the following conditions:
JCIWM0218GB

A/C AUTO AMP.
HAC-85
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DTC Inspection Priority ChartINFOID:0000000003846377
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000003846378
Compressor : ON
Air outlet : AUTO
Air inlet : FRE (Fresh)
Blower fan speed : AUTO
Set temperature : Setting before communication error occurs
Priority Detected items (DTC)
1 U1000: CAN COMM CIRCUIT
 U1010: CONTROL UNIT (CAN)
2 B257B: AMB TEMP SEN (SHORT)
 B257C: AMB TEMP SEN (OPEN)
 B2578: IN CAR SENSOR (OUT OF RANGE [LOW])
 B2579: IN CAR SENSOR (OUT OF RANGE [HI])
 B2581: EVAP TEMP SEN (SHORT)
 B2582: EVAP TEMP SEN (OPEN)
 B2630: SUNLOAD SEN (SHORT)
 B2631: SUNLOAD SEN (OPEN)
 B2632: DR AIRMIX ACTR (SHORT)
 B2633: DR AIRMIX ACTR (OPEN)
 B2634: PASS AIRMIX ACTR (SHORT)
 B2635: PASS AIRMIX ACTR (OPEN)
 B2636: DR VENT DOOR FAIL
 B2637: DR B/L DOOR FAIL
 B2638: DR D/F1 DOOR FAIL
 B2639: DR DEF DOOR FAIL
 B263D: FRE DOOR FAIL
 B263E: 20P FRE DOOR FAIL
 B263F: REC DOOR FAIL
 B2654: D/F2 DOOR FAIL
 B2655: B/L2 DOOR FAIL
 B2656: BTC FRE DOOR FAIL
DTCItems
(CONSULT-III screen terms)Reference
U1000 CAN COMM CIRCUITHAC-42, "
DTC Logic"
U1010 CONTROL UNIT (CAN)HAC-43, "DTC Logic"
B257B AMB TEMP SEN (SHORT)HAC-44, "DTC Logic"
B257C AMB TEMP SEN (OPEN)HAC-44, "DTC Logic"
B2578 IN CAR SENSOR (OUT OF RANGE [LOW])HAC-47, "DTC Logic"
B2579 IN CAR SENSOR (OUT OF RANGE [HI])HAC-47, "DTC Logic"
B2581 EVAP TEMP SEN (SHORT)HAC-50, "DTC Logic"
B2582 EVAP TEMP SEN (OPEN)HAC-50, "DTC Logic"
B2630*SUNLOAD SEN (SHORT)HAC-53, "DTC Logic"
B2631*SUNLOAD SEN (OPEN)HAC-53, "DTC Logic"
B2632 DR AIRMIX ACTR (SHORT)HAC-56, "DTC Logic"
B2633 DR AIRMIX ACTR (OPEN)HAC-56, "DTC Logic"
B2634 PASS AIRMIX ACTR (SHORT)HAC-58, "DTC Logic"

HAC-86
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A/C AUTO AMP.
*: Perform self-diagnosis under sunshine. When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise self-diag-
nosis indicates even though the sunload sensor is functioning normally.B2635 PASS AIRMIX ACTR (OPEN)HAC-58, "
DTC Logic"
B2636 DR VENT DOOR FAILHAC-60, "DTC Logic"
B2637 DR B/L DOOR FAILHAC-60, "DTC Logic"
B2638 DR D/F1 DOOR FAILHAC-60, "DTC Logic"
B2639 DR DEF DOOR FAILHAC-60, "DTC Logic"
B263D FRE DOOR FAILHAC-63, "DTC Logic"
B263E 20P FRE DOOR FAILHAC-63, "DTC Logic"
B263F REC DOOR FAILHAC-63, "DTC Logic"
B2654 D/F2 DOOR FAILHAC-60, "DTC Logic"
B2655 B/L2 DOOR FAILHAC-60, "DTC Logic"
B2656 BTC FRE DOOR FAILHAC-63, "DTC Logic"
DTCItems
(CONSULT-III screen terms)Reference

AIR CONDITIONER CONTROL
HAC-87
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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"

HAC-88
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INSUFFICIENT COOLING
INSUFFICIENT COOLING
DescriptionINFOID:0000000003846386
Symptom
 Insufficient cooling
 No cool air comes out. (Air flow volume is normal.)
Inspection procedureINFOID:0000000003846387
1.CHECK WITH A GAUGE OF RECOVERY/RECYCLING RECHARGING EQUIPMENT
Connect the recovery/recycling recharging equipment to the vehicle and perform the pressure inspection with
the gauge.
Is there refrigerant?
YES >> GO TO 2.
NO-1 >> Check for refrigerant leakages with the refrigerant leakage detecting fluorescent leak detector.
Refer to HA-32, "
Inspection".
NO-2 >> GO TO 2 after repairing or replacing the parts according to the inspection results.
2.CHECK CHARGED REFRIGERANT AMOUNT
1. Connect recovery/recycling recharging equipment to the vehicle and discharge the refrigerant.
2. Recharge with the proper amount of refrigerant and perform the inspection with the refrigerant leakage
detecting fluorescent leak detector. Refer to HA-32, "
Inspection".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Refill the refrigerant and 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 performance test. Refer to
HA-30, "
Performance Chart".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Perform the diagnosis with the gauge pressure. Refer to HA-8, "
Trouble Diagnosis For Unusual
Pressure".
4.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 with the setting of 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 5.
5.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 6.
6.CHECK WITH ACTIVE TEST OF CONSULT-III

INSUFFICIENT COOLING
HAC-89
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1. Using CONSULT-III, perform “HVAC TEST” “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.
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 7.
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".
7.CHECK DRIVE BELT
Check tension of the drive belt. Refer to EM-12, "
Checking".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Adjust or replace drive belt.
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 COLD FULL COLD FULL 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

HAC-90
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INSUFFICIENT COOLING
8.CHECK AIR LEAKAGE FROM DUCT
Check duct and nozzle, etc, of the A/C system for air leakage.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair or replace parts according to the inspection results.

INSUFFICIENT HEATING
HAC-91
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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
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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