display NISSAN TEANA 2008 Service Manual

HAC-24
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
AUTOMATIC AIR CONDITIONER SYSTEM
 At the end of each transmission, a stop operation, in-operation, or internal malfunction message is delivered
to the A/C auto amp. This completes one data transmission and control cycle.
Component Part LocationINFOID:0000000003846303
ENGINE COMPARTMENT
JSIIA1132GB

AUTOMATIC AIR CONDITIONER SYSTEM
HAC-25
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PASSENGER COMPARTMENT
1. Refrigerant pressure sensor 2. Compressor (magnet clutch) 3. Ambient sensor
JPIIA0992ZZ

HAC-26
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
AUTOMATIC AIR CONDITIONER SYSTEM
Component Description
INFOID:0000000003846304
1. Intake door motor 2. Air mix door motor (passenger side) 3. Air mix door motor (driver side)
4. Mode door motor 5. Sunload sensor 6. In-vehicle sensor
7. A/C auto amp. 8. Intake sensor 9. Blower motor
JPIIA0997ZZ

AUTOMATIC AIR CONDITIONER SYSTEM
HAC-27
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Component Description
Refrigerant pressure sensorEC-348, "
Description"
CompressorHAC-72, "Description"
Ambient sensorHAC-44, "Description"
Intake door motorHAC-63, "Description"
Air mix door motor (driver side)HAC-56, "Description"
Air mix door motor (passenger side)HAC-58, "Description"
Mode door motorHAC-60, "Description"
Sunload sensorHAC-53, "Description"
In-vehicle sensorHAC-47, "Description"
A/C auto amp. HAC-67, "Description"
Intake sensorHAC-50, "Description"
Blower motorHAC-68, "Description"

HAC-28
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
MODE DOOR CONTROL SYSTEM
MODE DOOR CONTROL SYSTEM
System DiagramINFOID:0000000003846309
System DescriptionINFOID:0000000003846310
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
JPIIA0493GB
JSIIA1133GB

MODE DOOR CONTROL SYSTEM
HAC-29
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Mode position can be selected manually by pressing the MODE
switch or the DEF switch on the A/C control. This the setting of a
mode position. Pressing the AUTO switch allows automatic control
by the A/C auto amp. During the automatic control of a mode posi-
tion, a mode door position (VENT, B/L, FOOT, or D/F) is selected
based on a target the air mix door opening angle and sunload
depending on the temperature calculated by the A/C auto amp. In
addition, the D/F is selected to prevent windshield fogging only when
ambient temperature is extremely low with mode position the FOOT.
JPIIA0767GB

HAC-30
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
AIR MIX DOOR CONTROL SYSTEM
AIR MIX DOOR CONTROL SYSTEM
System DiagramINFOID:0000000003846311
System DescriptionINFOID:0000000003846312
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
JPIIA0498GB
JSIIA1133GB

AIR MIX DOOR CONTROL SYSTEM
HAC-31
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When ignition switch is ON, the A/C auto amp. continuously and
automatically controls temperatures regardless of air conditioner
operational condition. When setting a target temperature with the
temperature control switch, the A/C auto amp. corrects the set tem-
perature and decides a target air mix door opening angle. The A/C
auto amp. controls air mix door according to the target air mix door
opening angle and current air mix door opening angle, keeping an
optimum air mix door opening angle. When the temperature is set at
18°C (60°F), air mix door is set on full cold, and when the tempera-
ture is set at 32°C (90°F), it is set to full hot.
JPIIA0633GB

HAC-32
< FUNCTION DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
INTAKE DOOR CONTROL SYSTEM
INTAKE DOOR CONTROL SYSTEM
System DiagramINFOID:0000000003846313
System DescriptionINFOID:0000000003846314
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
JPIIA0887GB
JSIIA1133GB

INTAKE DOOR CONTROL SYSTEM
HAC-33
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 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.
JPIIA0634GB