Nissan Qashqai J11. Manual — part 1097
HAC-24
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
SYSTEM
If the engine coolant temperature is 56
°
C (133
°
F) or less, to prevent
a cold discharged air flow, A/C auto amp. suspends blower motor
activation for the maximum 150 seconds depending on target air mix
door opening angle. After this, voltage of blower motor is increased
gradually, and blower motor is activated.
HIGH IN-VEHICLE TEMPERATURE STARTING CONTROL
When evaporator temperature is high [intake sensor value is 35
°
C (95
°
F) or more], to prevent a hot dis-
charged air flow, A/C auto amp. suspends blower motor activation for approximately 3 seconds so that evapo-
rator is cooled by refrigerant.
FAN SPEED CONTROL AT DOOR MOTOR OPERATION
When mode door motor is activated while air flow is more than the specified value, A/C auto amp. reduces
temporarily fan speed so that mode door moves smoothly.
AUTOMATIC AIR CONDITIONING SYSTEM : Air Inlet Control
INFOID:0000000010432174
• A/C auto amp. controls intake door motor, and change air inlet.
• While air inlet is in automatic control, A/C auto amp. selects air
inlet (fresh air intake, 20% fresh air intake, or recirculation)
depending on set temperature, in-vehicle temperature, and ambi-
ent temperature.
AUTOMATIC AIR CONDITIONING SYSTEM : Compressor Control
INFOID:0000000010432175
DESCRIPTION
• When the compressor activation condition is satisfied while blower motor is activated, A/C auto amp. trans-
mits A/C ON signal and blower fan ON signal to ECM.
• ECM judges the conditions of each sensor (Refrigerant pressure sensor signal, accelerator position signal,
etc.), and transmits the A/C compressor request signal to IPDM E/R via CAN communication line.
• By receiving the A/C compressor request signal from ECM, IPDM E/R turns the A/C relay to ON, and acti-
vates the compressor. Refer to
PCS-7, "RELAY CONTROL SYSTEM : System Description"
CONTROL BY A/C AUTO AMP.
Low Temperature Protection Control
When intake sensor detects that evaporator fin temperature is
[
−
5.0
°
C (23.0
°
F)] or less, A/C auto amp. requests ECM to turn the
compressor OFF, and stops the compressor.
When the air temperature returns to
[1.0
°
C (33.8
°
F)] or more, the
compressor is activated.
Refrigerant Discharge Amount Control
JMIIA1227GB
JMIIA0711GB
JMIIA2550GB
SYSTEM
HAC-25
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
• A/C auto amp. transmits the ECV control signal via CAN communication. IPDM E/R transmits the control sig-
nal to ECV according to the received ECV control signal.
• ECV is controlled according to change in the duty ratio of the transmitted control signal.
• Except when temperature setting is full cold or outlet is DEF, A/C auto amp. controls the refrigerant dis-
charge amount according to the required cooling capacity.
• A/C auto amp. increases the refrigerant discharge amount when evaporator temperature is higher than the
target temperature upper limit, and reduces the refrigerant discharge amount when evaporator temperature
is at or below the target temperature upper limit.
NOTE:
Target temperature upper limit value of evaporator can be changed using “TARGET EVAPORATOR TEMP
UPPER LIMIT SETTING” in “WORK SUPPORT” mode of CONSULT. Refer to
Evaporator Temperature Upper Limit Value"
.
Compressor Oil Circulation Control
When the engine starts, A/C auto amp. activates the compressor for a few seconds and circulates the com-
pressor oil once.
CONTROL BY ECM
Compressor Protection Control at Pressure Malfunction
When the high-pressure side value that is detected by refrigerant pressure sensor is as per the following state,
ECM requests IPDM E/R to turn A/C relay OFF and stops the compressor.
• 3.12 MPa (31.82 kg/cm
2
, 452.4 psi) or more (When the engine speed is less than 1,500 rpm)
• 2.74 MPa (27.95 kg/cm
2
, 397.3 psi) or more (When the engine speed is 1,500 rpm or more)
• 0.14 MPa (1.43 kg/cm
2
, 20.3 psi) or less
Air Conditioning Cut Control
When the engine condition is high load, ECM transmit A/C relay OFF request to IPDM E/R, and stops the
compressor.
AUTOMATIC AIR CONDITIONING SYSTEM : Door Control
INFOID:0000000010432176
SWITCH AND THEIR CONTROL FUNCTION
HAC-26
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
SYSTEM
*1: With rear ventilator
*2: With rear foot duct
NOTE:
The sub-defroster and side ventilator door include a permanent opening and does not fully close.
Intake door
Blower motor
Air conditioner filter
Evaporator
Heater core
PTC heater
Air mix door (driver side/passenger
side)
Foot door
Side ventilator door
Sub defroster door
Center ventilator and defroster door
Fresh air
Recirculation air
Discharge air
Defroster
Center ventilator
Side ventilator
Rear ventilator
*1
Front foot
Rear foot
*2
JMIIA3570ZZ
SYSTEM
HAC-27
< SYSTEM DESCRIPTION >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
For Europe and Russia
*: Air inlet status is displayed by indicator during activating automatic control
Switch/dial position
Door position
Mode door
In
ta
k
e
do
or
Air mix door
Ce
nt
e
r v
e
n
til
at
o
r a
n
d
de
fr
ost
e
r
do
or
S
u
b
de
fros
te
r do
or
Si
de
v
e
n
til
at
o
r
do
or
Fo
ot doo
r
Driver side
Pa
ss
en
ge
r si
de
AUTO switch
AUTO
—
—
—
• MODE VENT switch
• MODE FOOT switch
• MODE DEF switch
• MAX DEF switch
MODE
position
VENT/DEF (V/D)
VENT
Bi-level (B/L)
ALL
FOOT
DEF/FOOT (D/F)
DEF
INTAKE switch*
REC
—
—
—
—
FRE
Temperature control
dial (Driver side)
DUAL
switch:
OFF
Full cold
Lo
—
16.0
°
C – 30.0
°
C
AUTO
Full hot
HI
Temperature control
dial (Driver side)
DUAL
switch:
ON
Full cold
Lo
—
16.0
°
C – 30.0
°
C
AUTO
Full hot
HI
Temperature control
dial (Passenger side)
Full cold
Lo
—
16.0
°
C – 30.0
°
C
AUTO
Full hot
HI
ON·OFF switch
OFF
—
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст