Condition NISSAN TEANA 2008 Service Manual

A/C AUTO AMP.
HAC-75
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ECU DIAGNOSIS
A/C AUTO AMP.
Reference ValueINFOID:0000000003846375
VALUES ON THE DIAGNOSIS TOOL
CONSULT-III MONITOR ITEM
TERMINAL LAYOUT
PHYSICAL VALUES
Monitor item Condition Value/Status
COMP REQ SIGEngine: Run at idle after
warming up A/C switch: ON
(Compressor operation sta-
tus) On
A/C switch: OFF Off
FAN REQ SIGEngine: Run at idle after
warming up Blower fan: ON On
Blower fan: OFF Off
AMB TEMP SEN Ignition switch ON — −30 - 55°C (−22 - 131°F)
IN-VEH TEMP Ignition switch ON — −30 - 55°C (−22 - 131°F)
INT TEMP SEN Ignition switch ON — −30 - 55°C (−22 - 131°F)
SUNLOAD SEN Ignition switch ON —0 - 1045 W/m
2
(0 - 900 kcal/m2·h)
AMB SEN CAL Ignition switch ON —−30 - 55°C (−22 - 131°F)
IN-VEH CAL Ignition switch ON —−30 - 55°C (−22 - 131°F)
INT TEMP CAL Ignition switch ON —−30 - 55°C (−22 - 131°F)
SUNL SEN CAL Ignition switch ON —0 - 1045 W/m
2
(0 - 900 kcal/m2·h)
FAN DUTYEngine: Run at idle after
warming up Blower fan: ON 21 - 91%
Blower fan: OFF 0%
XM Ignition switch ON —−100 - 150°
ENG COOL TEMP Ignition switch ON —Values according to coolant
temperature
VEHICLE SPEED Driving —Equivalent to speedometer
reading
JSIIA1205ZZ

HAC-76
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A/C AUTO AMP.
Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
+−Signal nameInput/
Output
6
(L)Ground TX (AMP > SW·DISP) Input — —
7
(P)Ground RX (SW > AMP) Output — —
10
(L/R)Ground LAN signalInput/
Output—
11
(L/W)GroundPower supply for each door
motorInput Ignition switch ON Battery voltage
15
(O)Ground Sunload sensor signal Input — —
16
(R/G)Ground Intake sensor signal Input — —
17
(V/W)Ground ACC Power supply — Ignition switch ACC Battery voltage
19
(B)Ground Ground — Ignition switch ON 0 V
20
(G/W)Ground IGN Power supply — Ignition switch ON Battery voltage
26
(GR)GroundRear window defogger feed-
back signalInputRear window defogger switch:
OFF0 V
Rear window defogger switch:
ON12 V
27
(GR/W)GroundRear window defogger ON
signalOutput—12 V
When rear window defogger
switch is pushed.0 V
32
(L/Y)Ground Blower motor control signal Output Ignition switch ON
 Blower speed: 1st speed
(manual)
34
(P)GroundA/C auto amp. connection
recognition signalOutput Ignition switch ON 5V
35
(O/B)Ground Ambient sensor signal Input — —
36
(LG)Ground In-vehicle sensor signal Input — —
37
(B/Y)Ground Sensor ground — Ignition switch ON 0 V
39
(B)Ground Ground — Ignition switch ON 0 V
40
(Y/R)Ground BATT Power supply — Ignition switch OFF Battery voltage
SJIA1453J
JSIIA0096ZZ

A/C AUTO AMP.
HAC-77
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Wiring Diagram - AIR CONDITIONER CONTROL SYSTEM -INFOID:0000000003846376
JCIWM0211GB

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

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"

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

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

HAC-94
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NOISE
NOISE
DescriptionINFOID:0000000003846390
Symptom
Noise
 Noise is heard when the A/C system operates.
Inspection procedureINFOID:0000000003846391
1.CHECK OPERATION
1. Operate the A/C system and check the operation. Refer to HAC-8, "
Description & Inspection".
2. Check the parts where noise is occurring.
Can the parts where noise is occurring be checked?
YES-1 >> Noise from blower motor: GO TO 2.
YES-2 >> Noise from compressor: GO TO 3.
YES-3 >> Noise from expansion valve: GO TO 4.
YES-4 >> Noise from A/C piping (pipe, flexible hose): GO TO 6.
YES-5 >> Noise from drive belt: GO TO 7.
NO >> END.
2.CHECK BLOWER MOTOR
1. Remove blower motor.
2. Remove foreign materials that are in the blower unit.
3. Check the noise from blower motor again.
Is the inspection result normal?
YES >> END.
NO >> Replace blower motor.
3.CHECK COMPRESSOR
Perform trouble diagnosis for the compressor and check the compressor. Refer to HA-11, "
Symptom Table".
Is the inspection result normal?
YES >> END.
NO >> Refill the refrigerant or replace the compressor according to the inspection results.
4.CHECK WITH GAUGE PRESSURE
Perform the diagnosis with the gauge pressure. Refer to HA-8, "
Trouble Diagnosis For Unusual Pressure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace parts according to the inspection results.
5.CHECK EXPANSION VALVE
1. Correct the refrigerant with recovery/recycling recharging equipment.
2. Recharge with the proper amount of the collected refrigerant after recycling or new refrigerant.
3. Check for the noise from expansion valve again.
Are the malfunction solved?
YES >> END.
NO >> Replace expansion valve.
6.CHECK A/C PIPING (PIPE, FLEXIBLE HOSE)
1. Check the A/C piping (pipes, flexible hoses) (for deformation and damage, etc.).
2. Check the installation condition of clips and brackets, etc, of the A/C piping (pipes, flexible hoses).
Is the inspection result normal?
YES >> Fix the line with rubber or come vibration absorbing material.
NO >> Repair or replace parts according to the inspection results.
7.CHECK DRIVE BELT

HAC-96
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MEMORY FUNCTION DOES NOT OPERATE
MEMORY FUNCTION DOES NOT OPERATE
DescriptionINFOID:0000000003846392
Symptom
 Memory function does not operate normally.
 The setting is not maintained. (It returns to the initial condition.)
Inspection procedureINFOID:0000000003846393
1.CHECK OPERATION
1. Set temperature control switch to 32°C (90°F).
2. Press the OFF switch.
3. Turn the ignition switch OFF.
4. Turn the ignition switch ON.
5. Press the AUTO switch.
6. Check that the set temperature is maintained.
Is the inspection result normal?
YES >> END.
NO >> GO TO 2.
2.CHECK POWER SUPPLY AND GROUND CIRCUIT OF A/C AUTO AMP.
Check power supply and ground circuit of the A/C auto amp. Refer to HAC-65, "
A/C AUTO AMP. : Diagnosis
Procedure".
Is the inspection result normal?
YES >> Replace the A/C auto amp.
NO >> Repair or replace malfunctioning parts.