Nissan Qashqai J11. Manual — part 1129
HAC-152
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
SYSTEM
sensor is used when engine coolant temperature is low [less than approximately 56
°
C (133
°
F)]. The mem-
ory data (before the ignition switch is OFF) when the engine is warmed up [approximately 56
°
C (133
°
F) or
more].
- The correction of the ambient temperature is not performed when the detection temperature of the ambient
temperature is less than approximately
−
20
°
C (–4
°
F).
Intake temperature correction
- A/C amp. inputs the temperature detected by intake sensor as the intake temperature (evaporator tempera-
ture).
- A/C amp. performs the correction of the temperature detected by intake sensor for air conditioning control.
- A/C amp. performs the correction so that the recognition intake temperature changes depending on the dif-
ference between the detected intake temperature and the recognition intake temperature. If the difference is
large, the changing is early. The changing becomes slow as the difference becomes small.
CONTROL BY ECM
HAC-152, "MANUAL AIR CONDITIONING SYSTEM : Compressor Control"
CONTROL BY IPDM E/R
HAC-152, "MANUAL AIR CONDITIONING SYSTEM : Compressor Control"
MANUAL AIR CONDITIONING SYSTEM : Air Inlet Control
INFOID:0000000010432505
DESCRIPTION
• A/C amp. controls the intake door motor and switches the air inlets.
• A/C amp. controls the air inlets so that they are set to fresh air intake, when compressor is stopped by low
temperature protection control.
• When the following conditions are met, A/C amp. controls the air inlets to 20% recirculation. (However, this
does not occur when high water temperature control is in effect.)
At this time, the intake switch indicator lamp turns OFF.
- Fan control dial: 21st - 24th
- Temperature control dial: Full hot
- Air outlet mode: DF ON or DEF ON
HIGH ENGINE COOLANT TEMPERATURE CONTROL
When either of the following conditions is met, A/C amp. changes the air inlets to recirculation.
Condition 1
• Air outlet: Other than D/F or DEF
• A/C switch: ON
• Ambient temperature: More than 25
°
C (77
°
F)
• Vehicle speed: 30 km/h or more
• Engine coolant temperature: 105
°
C (221
°
F) or more
Condition 2
• Air outlet: D/F or DEF
• Air inlet: Fresh air intake
• A/C switch: ON
• Ambient temperature: More than 25
°
C (77
°
F)
• Vehicle speed: 30 km/h or more
• Engine coolant temperature: 105
°
C (221
°
F) or more
MANUAL AIR CONDITIONING SYSTEM : Compressor Control
INFOID:0000000010432506
DESCRIPTION
• When the compressor activation condition is satisfied while blower motor is activated, A/C amp. transmits 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 AMP.
Low Temperature Protection Control
SYSTEM
HAC-153
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
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HAC
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When intake sensor detects that evaporator fin temperature is
[
−
5.0
°
C (23.0
°
F)] or less, A/C amp. requests ECM to turn the compres-
sor 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
• A/C amp. transmits the ECV control signal via CAN communication. IPDM E/R transmits the control signal 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 amp. controls the refrigerant discharge
amount according to the required cooling capacity.
• A/C 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 amp. activates the compressor for a few seconds and circulates the compressor
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.
MANUAL AIR CONDITIONING SYSTEM : Door Control
INFOID:0000000010432507
SWITCH AND THEIR CONTROL FUNCTION
JMIIA2550GB
HAC-154
< SYSTEM DESCRIPTION >
[MANUAL 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
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-155
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
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D
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For Europe and Russia
Except for Europe and Russia
Switch/dial position
Door position
Mode door
Intake door
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
• 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
Full cold
—
Full cold – Full hot
-
Full hot
Switch/dial position
Door position
Mode door
Intake
door
Air mix
door
Ce
nt
er v
e
n
til
ato
r a
n
d
de
fros
te
r do
or
Sub
de
fr
ost
e
r do
or
S
ide
v
e
n
til
ato
r do
or
Fo
ot
do
o
r
VENT switch
—
—
B/L switch
FOOT switch
D/F switch
DEF switch
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