Component Description

Component		Description
Ambient sensor		Ambient sensor measures ambient air temperature. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
AV control unit		AV control unit transmits front A/C control operation signal to A/C auto amp. via CAN communication line.
A/C auto amp.		A/C auto amp. controls front automatic air conditioning system by inputting and calculating signals from each sensor and each switch. A/C auto amp. has self - diagnosis function. Diagnosis of front automatic air conditioning system can be performed quickly.
BCM		BCM transmits key ID signal to A/C auto amp. via CAN communication line.
Blower unit	Front blower motor	Refer to FRONT BLOWER MOTOR .
Blower unit	Intake door motor	The LCU (Local Control Unit) is installed to intake door motor so as to perform the multiplex communication control (LIN). Refer to DOOR CONTROL .
Combination meter		Combination meter transmits vehicle speed signal to A/C auto amp. via CAN communication line.
ECM		ECM controls compressor according to status of engine and refrigerant. ECM transmits engine coolant temperature signal to A/C auto amp. via CAN communication line.
Engine coolant temperature sensor		Engine coolant temperature sensor measures engine coolant temperature. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
Front display		Front display indicates operation status of front automatic air conditioning system.
Front in - vehicle sensor		Front in - vehicle sensor measures temperature of intake air that flows through aspirator to passenger room. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
Heater & cooling unit assembly	Aspirator	Refer to ASPIRATOR .
	Front air mix door motor (Driver side)	The LCU (Local Control Unit) is installed to front air mix door motor (driver side) so as to perform the multiplex communication control (LIN). Refer to DOOR CONTROL .
	Front air mix door motor (Passenger side)	The LCU (Local Control Unit) is installed to front air mix door motor (passenger side) so as to perform the multiplex communication control (LIN). Refer to DOOR CONTROL .
	Front mode door motor	The LCU (Local Control Unit) is installed to front mode door motor so as to perform the multiplex communication control (LIN). Refer to DOOR CONTROL .
	Intake sensor	Intake sensor measures temperature of front 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.
	Upper ventilator door motor	The LCU (Local Control Unit) is installed to upper ventilator door motor so as to perform the multiplex communication control (LIN). Refer to DOOR CONTROL .
IPDM E/R		A/C relay is integrated in IPDM E/R. IPDM E/R operates A/C relay when A/C compressor request signal is received from ECM via CAN communication line.
Magnet clutch		The magnet clutch is the device that drives the compressor with the signal from IPDM E/R. Compressor is driven by the magnet clutch which is magnetized by electric power supply. IPDM controls magnet clutch by turning the built in A/C relay to ON ==> OFF according to ECM request.
Preset switch		Preset switch is integrated with front A/C control and AV operation switch. Front A/C control operation signal is transmitted from preset switch to AV control unit via communication line.
Refrigerant pressure sensor		Refer to REFRIGERANT PRESSURE SENSOR .
Sunload sensor		Sunload sensor measures sunload amount. This sensor is a dual system so that sunload for driver side and passenger side are measured separately. This sensor converts sunload amount to voltage signal by photodiode and transmits to A/C auto amp.