diagram NISSAN TEANA 2008 Service Manual

HAC-142
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
PLASMACLUSTER SYSTEM
PLASMACLUSTER SYSTEM
WITH INTELLIGENT AIR CONDITIONER SYSTEM
WITH INTELLIGENT AIR CONDITIONER SYSTEM : System DiagramINFOID:0000000003884708
WITH INTELLIGENT AIR CONDITIONER SYSTEM : System DescriptionINFOID:0000000003884709
 Plasmacluster™ ion generation function, which generates ions inactivating bacteria and supplies to the pas-
senger compartment through air blown from air conditioner, has been adopted.
 Airborne mold and bacteria in the passenger compartment are inactivated by the effect of Plasmacluster
™
ion.
 Plasmacluster
™ ion generation function is switched between 2 operation modes (clean mode and ion control
mode) automatically, and maintain the ion balance in the passenger compartment close to that in nature.
 The operating condition is displayed in the “ION” indicator in the display.
NOTE:
 Plasmacluster
™ ion technology developed by Sharp Corporation is installed in this item.
 Plasmacluster
™ is a trademark of Sharp Corporation.
OPERATION DESCRIPTION
 The Plasmacluster™ ion generation function operates synchronized with the blower motor. The Plasmaclus-
ter
™ ion generation function operates when the blower motor operates.
 2 ion generation modes (clean mode and ion control mode) are switched every 15 minutes while blower
motor turns ON with ignition switch ON.
 When the clean switch is turned ON, Plasmacluster
™ ion generation function extends the operation time of
the clean mode to approximately 30 minutes for deactivating impurities more actively.
NOTE:
When the clean switch is not ON
 Ignition switch: OFF
 Blower motor: OFF
 Mode position: Defroster (DEF)
 Ambient temperature: At about 0°C (32°F) or below [Reactivate at about 2°C (36°F) or above]
 When the gas sensor is malfunctioning
 When the blower motor is stopped, the Plasmacluster
™ ion generation function also stops operating
(“CLEAN” and “ION” indicators are OFF).
JPIIA1004GB
Condition Clean mode Ion control mode
Clean switch: OFF 15 minutes 15 minutes
Clean switch: ON 30 minutes 15 minutes

MODE DOOR CONTROL SYSTEM
HAC-145
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
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MODE DOOR CONTROL SYSTEM
System DiagramINFOID:0000000003884714
System DescriptionINFOID:0000000003884715
The mode door is automatically controlled by the temperature setting, ambient temperature, in-vehicle temper-
ature, intake temperature and amount of sunload.
SYSTEM OPERATION
 The A/C auto amp. receives data from each of the sensors.
 The A/C auto amp. sends the air mix door, the mode door and the intake door opening angle data to the air
mix door motor LCUs, the mode door motor LCU and the intake door motor LCU.
 The air mix door motors, the mode door motor and the intake door motor read their respective signals
according to the address signal. Opening angle indication signals received from the A/C auto amp. and each
of the motor position sensors are compared by the LCUs in each door motor with the existing decision and
opening angles.
 Next, HOT/COLD, DEF/VENT, OPEN/SHUT or FRE/REC operations is selected. The newly selected data is
returned to the A/C auto amp.
Door Motor Circuit
Mode Door Control Specification
JPIIA0494GB
JSIIA1133GB

AIR MIX DOOR CONTROL SYSTEM
HAC-147
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AIR MIX DOOR CONTROL SYSTEM
System DiagramINFOID:0000000003884718
System DescriptionINFOID:0000000003884719
The air mix doors are automatically controlled so that in-vehicle temperature is maintained at a predetermined
value by the temperature setting, ambient temperature, intake temperature and amount of sunload.
SYSTEM OPERATION
 The A/C auto amp. receives data from each of the sensors.
 The A/C auto amp. sends air mix door, the mode door and the intake door opening angle data to the air mix
door motor LCUs, the mode door motor LCU and the intake door motor LCU.
 The air mix door motors, the mode door motor and the intake door motor read their respective signals
according to the address signal. Opening angle indication signals received from the A/C auto amp. and each
of the motor position sensors are compared by the LCUs in each door motor with the existing decision and
opening angles.
 Next, HOT/COLD, DEF/VENT, OPEN/SHUT or FRE/REC operation is selected. The newly selected data is
returned to the A/C auto amp.
Door Motor Circuit
Air Mix Door Control Specification
JPIIA0499GB
JSIIA1133GB

INTAKE DOOR CONTROL SYSTEM
HAC-149
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INTAKE DOOR CONTROL SYSTEM
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : System Diagram
INFOID:0000000003884722
WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : System Description
INFOID:0000000003884724
The intake door is automatically controlled by the temperature setting, ambient temperature, in-vehicle tem-
perature, intake temperature, amount of sunload and ON/OFF operation of the compressor.
SYSTEM OPERATION
The intake door control judges intake door position based on the ambient temperature, the intake air tempera-
ture and the in-vehicle temperature. When the DEF or OFF switches are pressed, the A/C auto amp. sets the
intake door to the FRE position.
Door Motor Circuit
Intake Door Control Specification
JPIIA1023GB
JSIIA1133GB

HAC-150
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
INTAKE DOOR CONTROL SYSTEM
 Intake door position is basically set to the FRE when the FRE indi-
cator is ON or DEF switch is ON.
 Intake door position is basically set to the REC when the REC indi-
cator is ON.
 The intake door automatic control selects the FRE, the 20% FRE,
or the REC depending on the target air mix door opening angle,
based on in-vehicle temperature, ambient temperature, and sun-
load.
WITH INTELLIGENT AIR CONDITIONER SYSTEM
WITH INTELLIGENT AIR CONDITIONER SYSTEM : System DiagramINFOID:0000000003884723
WITH INTELLIGENT AIR CONDITIONER SYSTEM : System DescriptionINFOID:0000000003884725
The intake door is automatically controlled by the ambient atmospheric CO and NO2, temperature setting,
ambient temperature, in-vehicle temperature, intake temperature, amount of sunload and ON/OFF operation
of the compressor.
SYSTEM OPERATION
The intake door control judges intake door position based on the ambient atmospheric CO and NO2, ambient
temperature, the intake air temperature and the in-vehicle temperature. When DEF or OFF switches are
pressed, the A/C auto amp. sets the intake door at the FRE position.
JPIIA0634GB
JPIIA1024GB

HAC-152
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
BLOWER MOTOR CONTROL SYSTEM
BLOWER MOTOR CONTROL SYSTEM
System DiagramINFOID:0000000003884727
System DescriptionINFOID:0000000003884728
Blower speed is automatically controlled by the temperature setting, ambient temperature, in-vehicle tempera-
ture, intake temperature, amount of sunload and air mix door position.
By pressing the AUTO switch, the blower motor starts to gradually increase air flow volume.
When engine coolant temperature is low, the blower motor operation is delayed to prevent cool air from flow-
ing.
SYSTEM OPERATION
System Operation
 For air flow, the manual selection (1-7) with the fan control dial has priority.
 If the AUTO switch is pressed or if the DEF switch is pressed while in the OFF condition, it changes to the
automatic control by A/C auto amp.
 When increasing the air flow, it changes the duty ratio of the blower motor drive signal to prevent the air flow
from suddenly increasing.
 There are the following types of air flow control: starting air flow control, starting air flow control at low cool-
ant temperature, starting air flow control at high in-vehicle temperature, and air flow control at actuator oper-
ation in addition to manual control, normal automatic air flow control.
Normal Automatic Air Flow Control
 When the target temperature is set by the temperature control dial of A/C control, the A/C auto amp. per-
forms the calculation and decides the target according to the signal from each sensor.
 The A/C auto amp. changes the duty ratio of blower motor drive signal and controls the air flow continuously
so that the air flow becomes the target air flow.
 The minimum air flow will change according to the sunload when the air discharge outlet is VENT or B/L.
Fan Speed Control Specification
JPIIA0502GB
JPIIA0635GB

HAC-154
< FUNCTION DIAGNOSIS >[WITH 7 INCH DISPLAY]
MAGNET CLUTCH CONTROL SYSTEM
MAGNET CLUTCH CONTROL SYSTEM
System DiagramINFOID:0000000003884729
System DescriptionINFOID:0000000003884730
The A/C auto amp. controls compressor operation by ambient temperature, intake air temperature and signal
from ECM.
SYSTEM OPERATION
When the A/C switch, the AUTO switch, or the DEF switch is pressed, A/C auto amp. transmit the A/C switch
signal and blower fan motor switch signal to the ECM, via CAN communication.
ECM judges whether compressor can be turned ON, based on each sensor status (refrigerant-pressure sen-
sor signal, throttle angle, etc.). If the ECM judges that the compressor can be turned ON, it sends A/C com-
pressor request signal to the IPDM E/R, via CAN communication.
Upon receipt of A/C compressor request signal from the ECM, the IPDM E/R turns the A/C relay ON to oper-
ate the compressor.
When sending A/C compressor request signal to the IPDM E/R via CAN communication line, the ECM simul-
taneously sends A/C compressor feedback signal to A/C auto amp. via CAN communication line.
The ECM sends A/C compressor feedback signal to A/C auto amp., then, uses input A/C compressor feed-
back signal to control air inlet.
Compressor Protection Control
The ECM makes the A/C relay turn OFF and stops the compressor when pressure on the high-pressure side
detected by the refrigerant pressure sensor is over approximately 3,119 kPa (31.19bar, 31.8 kg/cm
2, 452 psi),
or below approximately 118 kPa (1.18bar, 1.2 kg/cm
2, 17 psi).
Low Temperature Protection Control
Turn the A/C relay to OFF and stop the compressor by the signal from the A/C auto amp according to the
evaporator passing air temperature detected by the intake sensor and the ambient temperature detected by
the ambient sensor.
JPIIA0504GB

BLOWER MOTOR
HAC-195
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Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair harness or connector.
6.CHECK A/C AUTO AMP. OUTPUT SIGNAL
1. Reconnect blower motor connector and A/C auto amp. connector.
2. Turn ignition switch ON.
3. Set MODE switch to the VENT position.
4. Check the output waveform between blower motor harness connector and ground using an oscilloscope,
while varying the fan speed from 1 to 7.
Is the inspection result normal?
YES >> Replace the blower motor.
NO >> Replace the A/C auto amp.
7.CHECK POWER VOLTAGE OF BLOWER RELAY
1. Turn the ignition switch OFF.
2. Remove the blower relay. Refer to PG-101, "
Fuse, Connector and Terminal Arrangement".
3. Turn the ignition switch ON.
4. Check the voltage between blower relay fuse block side terminal and ground. Refer to PG-101, "
Fuse,
Connector and Terminal Arrangement" for relay terminal assignment.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Inspection the power supply circuit. Refer to PG-55, "
Wiring Diagram - IGNITION POWER SUP-
PLY -".
8.CHECK BLOWER RELAY
1. Turn the ignition switch OFF.
2. Install the blower relay. Refer to PG-101, "
Fuse, Connector and Terminal Arrangement".
3. Turn the ignition switch ON.
4. Check the operating sound of blower relay.
Blower motor A/C auto amp.
Continuity
Connector Terminal Connector Terminal
M98 2 M50 32 Existed
JPIIA1025GB
(+) (−)
Vo l ta g e
Blower relay —
1
Ground Battery voltage
3

A/C AUTO AMP.
HAC-203
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WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : Wiring Diagram - AIR CON-
Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
+−Signal nameInput/
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
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-215
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WITH INTELLIGENT AIR CONDITIONER SYSTEM : Wiring Diagram - AIR CONDI-
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 Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
+−Signal nameInput/
Output
JSIIA0096ZZ