Nissan Qashqai J11. Manual — part 1127
HAC-144
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
COMPONENT PARTS
PTC HEATER CONTROL SYSTEM
No.
Component
Function
Compressor
Magnet clutch
HAC-149, "COMPRESSOR : Magnet Clutch"
ECV (Electrical Con-
trol Valve)
HAC-149, "COMPRESSOR : ECV (Electrical Control Valve)"
Refrigerant pressure sensor
HAC-150, "Refrigerant Pressure Sensor"
Ambient sensor
IPDM E/R
A/C relay is integrated in IPDM E/R. IPDM E/R operates A/C relay when re-
ceiving A/C compressor request signal from ECM via CAN communication
line.
IPDM E/R controls ECV compressor when receiving ECV control signal from
A/C amp. via CAN communication line.
Refer to
PCS-5, "Component Parts Location"
for detailed installation loca-
tion.
ECM
ECM, when receiving A/C ON signal and blower fan ON signal from A/C
amp., transmits A/C compressor request signal to IPDM E/R via CAN com-
munication according to status of the engine and refrigerant pressure.
ECM receives cooling fan request signal from A/C amp.
ECM transmits engine coolant temperature signal and refrigerant pressure
sensor signal to A/C amp. via CAN communication line.
Refer to
ECH-13, "Component Parts Location"
(HR engine models),
25, "ENGINE CONTROL SYSTEM : Component Parts Location"
(MR16DDT engine models),
ECM-627, "ENGINE CONTROL SYSTEM :
(MR20DD engine models),
(K9K engine models) or
(R9M engine models) for detailed installation location.
Combination meter
Combination meter transmits ambient temperature signal and vehicle speed
signal to A/C amp. via CAN communication line.
A/C control (A/C amp.)
HAC-150, "A/C Control (A/C Amp.)"
Fan control amp.
HAC-148, "A/C UNIT ASSEMBLY : Fan Control Amp."
Intake sensor
HAC-146, "A/C UNIT ASSEMBLY : Intake Sensor"
Air mix door motor
HAC-146, "A/C UNIT ASSEMBLY : Air Mix Door Motor"
Intake door motor
HAC-147, "A/C UNIT ASSEMBLY : Intake Door Motor"
Mode door motor
HAC-147, "A/C UNIT ASSEMBLY : Mode Door Motor"
Blower motor
COMPONENT PARTS
HAC-145
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
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HAC
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PTC HEATER CONTROL SYSTEM : Component Parts Location
INFOID:0000000010499399
Right side of A/C unit assembly
JMIIA3547ZZ
No.
Component
Function
Ambient sensor
PTC relay-1/2/3
PTC relay is controlled by BCM, and supplies power supply to PTC heater.
HAC-146
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
COMPONENT PARTS
A/C UNIT ASSEMBLY
A/C UNIT ASSEMBLY : Intake Sensor
INFOID:0000000010432486
Intake sensor measures evaporator fin temperature. The sensor
uses a thermistor which is sensitive to the change in temperature.
The electrical resistance of the thermistor decreases as temperature
increases.
A/C UNIT ASSEMBLY : Air Mix Door Motor
INFOID:0000000010432487
DESCRIPTION
• The step motor system is adopted for air mix door motor.
• When a drive signal is input from A/C amp. to door motor, a step motor built into the door motor rotates
according to the drive signal, and then stops at the target door position.
• Rotation of motor is transmitted to air mix door by link and lever, then air flow temperature is switched.
AIR MIX DOOR MOTOR DRIVE METHOD
• The 4 drive coils are excited in sequence in order to drive the motor.
ECM
ECM transmits engine speed signal, engine coolant temperature signal,
cooling fan speed request signal, and electrical power cut freeze signal to
BCM via CAN communication line.
Refer to
ECH-13, "Component Parts Location"
(HR engine models),
25, "ENGINE CONTROL SYSTEM : Component Parts Location"
(MR16DDT engine models),
ECM-627, "ENGINE CONTROL SYSTEM :
(MR20DD engine models),
(K9K engine models) or
(R9M engine models) for detailed installation location.
Combination meter
Combination meter transmits ambient temperature signal to BCM via CAN
communication line.
BCM
BCM receives each signals, and controls PTC relay.
BCM transmits idle up signal to ECM according to electrical load condition.
Refer to
BCS-6, "BODY CONTROL SYSTEM : Component Parts Location"
for detailed installation location.
PTC heater
HAC-149, "A/C UNIT ASSEMBLY : PTC Heater"
Blower motor
HAC-148, "A/C UNIT ASSEMBLY : Blower Motor"
No.
Component
Function
JSIIA1630GB
COMPONENT PARTS
HAC-147
< SYSTEM DESCRIPTION >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
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A
B
HAC
N
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• Direction of rotation is changeable by recomposing pattern of excitation.
A/C UNIT ASSEMBLY : Mode Door Motor
INFOID:0000000010432489
DESCRIPTION
• The step motor system is adopted for mode door motor.
• When a drive signal is input from A/C amp. to door motor, a step motor built into the door motor rotates
according to the drive signal, and then stops at the target door position.
• Rotation of motor is transmitted to mode door (center ventilator and defroster door, sub defroster door, side
ventilator door, and foot door) by link, rod, and lever, then air outlet is switched.
MODE DOOR MOTOR DRIVE METHOD
• The 4 drive coils are excited in sequence in order to drive the motor.
• Direction of rotation is changeable by recomposing pattern of excitation.
A/C UNIT ASSEMBLY : Intake Door Motor
INFOID:0000000010432490
DESCRIPTION
• The step motor system is adopted for intake door motor.
• When a drive signal is input from A/C amp. to door motor, a step motor built into the door motor rotates
according to the drive signal, and then stops at the target door position.
• Rotation of motor is transmitted to intake door by lever, then air inlet is switched.
INTAKE DOOR MOTOR (DRIVER SIDE) DRIVE METHOD
• The 4 drive coils are excited in sequence in order to drive the motor.
JMIIA3574GB
JZIIA0033GB
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