HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System)  SYSTEM DESCRIPTION  

Air conditioning amplifier assembly transmits and receives the signals in each ECU via the CAN communication system and LIN communication system. Also, the air conditioning amplifier assembly transmits and receives the damper position, damper operation, sensor status, etc., signals to and from each actuator.

Air Conditioning Amplifier Assembly ←→ Main Body ECU (Multiplex Network Body ECU)

Receiver	Sender	Signal	Communication Line
Air conditioning amplifier assembly	Main body ECU (multiplex network body ECU)	Auto dimmer	CAN
		Destination symbol
		Country code 1st, 2nd, 3rd
		Steering wheel
		Solar data (R)
		Solar data (L)
Main body ECU (multiplex network body ECU)	Air conditioning amplifier assembly	Ambient temperature display	CAN

Air Conditioning Amplifier Assembly ←→ Combination Meter Assembly

Receiver	Sender	Signal	Communication Line
Air conditioning amplifier assembly	Combination meter assembly	Ambient temperature display	CAN
		Outside temperature sensor data
		Vehicle speed (meter to other)
Combination meter assembly	Air conditioning amplifier assembly	Ambient temperature display	CAN
		Switch signal of 0 or 0.5 below decimal point of ambient temperature display

Air Conditioning Amplifier Assembly ←→ ECM

Receiver	Sender	Signal	Communication Line
Air conditioning amplifier assembly	ECM	ECO mode indicator	CAN
		Engine type information signal 1 - 4
		Eco-run flag
		Engine r/min data
		Water temperature
		Alternative field duty value
		A/C control cut-off 1, 2 and 4
		Number of PTC heater which is permitted (w/ PTC Heater)
		PTC heater drive inhibition (w/ PTC Heater)
		Viscous heater drive cut-off (w/ Viscous Heater)
		Voltage of accessory battery
		Compulsory internal air circulation command signal at high water temperature
ECM	Air conditioning amplifier assembly	Magnet clutch request	CAN
		A/C idle up request
		Heater idle up request
		A/C idle up high request (w/ Idle Up Switch)
		Charging control inhibit
		Prior A/C control request
		Acceleration cut inhibit
		Viscous heater drive request (w/ Viscous Heater)
		PTC heater control request (w/ PTC Heater)
		Generator control inhibit
		Cooling performance assistance request signal to transmission system
		Heating performance assistance request signal to transmission system
		Ambient temperature display

Air Conditioning Amplifier Assembly ←→ Engine Stop and Start ECU (w/ Stop and Start System)

Receiver	Sender	Signal	Communication Line
Air conditioning amplifier assembly	Engine stop and start ECU	Eco-run control mode	CAN
		Eco-run cancel lamp lighting request
		S&S A/C mode
Engine stop and start ECU	Air conditioning amplifier assembly	Engine on request	CAN
		Blower on state
		A/C screen auto/manual slect information
		Ambient temperature display
		A/C control state

Air Conditioning Amplifier Assembly ←→ Air Conditioning Control Assembly

Receiver	Sender	Signal	Communication Line
Air conditioning amplifier assembly	Air conditioning control assembly	Independent control A/C information	LIN
		AUTO switch operation
		OFF switch operation
		A/C switch operation
		Blower switch operation
		Auto/manual identification information
		Air outlet switch operation
		Set temperature switch operation
		Heater/cooler identification information
		Recirculation/fresh switch operation
Air conditioning control assembly	Air conditioning amplifier assembly	Blower customize display instruction	LIN
		Entire front panel display instruction
		AUTO display instruction
		Blower level display instruction
		Recirculation display instruction
		Air outlet display instruction
		Set temperature display instruction
		A/C display instruction

Air Conditioning Amplifier Assembly ←→ Integration Control and Panel Assembly (w/ Integration Control Panel)

Receiver	Sender	Signal	Communication Line
Air conditioning amplifier assembly	Integration control and panel assembly	Heater/cooler identification information	LIN
		Auto/manual identification information
		OFF switch operation
		Blower switch operation
		Air outlet switch operation
		Set temperature switch operation
Integration control and panel assembly	Air conditioning amplifier assembly	Entire rear panel display instruction	LIN
		Blower level display instruction
		Ion generator display instruction
		Air outlet display instruction
		Set temperature display instruction

Air Conditioning Amplifier Assembly ←→ Damper Servo

Receiver	Sender	Signal	Communication Line
Air conditioning amplifier assembly	No. 1 air conditioning radiator damper servo sub-assembly	Damper arm position	LIN
	No. 1 blower damper servo sub-assembly		Direct line
No. 1 air conditioning radiator damper servo sub-assembly	Air conditioning amplifier assembly		LIN
No. 1 blower damper servo sub-assembly			Direct line

Air Conditioning Amplifier Assembly ←→ Damper Servo (w/ Integration Control Panel (for Rear Automatic Air Conditioning))

Receiver	Sender	Signal	Communication Line
Air conditioning amplifier assembly	No. 1 rear cooling unit damper servo sub-assembly	Damper arm position	LIN
	No. 2 rear cooling unit damper servo sub-assembly		Direct line
No. 1 rear cooling unit damper servo sub-assembly	Air conditioning amplifier assembly		LIN
No. 2 rear cooling unit damper servo sub-assembly			Direct line

Air Conditioning Amplifier Assembly ←→ Blower Motor, Sensor, Switch, etc.

Receiver	Sender	Signal	Communication Line
Air conditioning amplifier assembly	Cooler thermistor (room temperature sensor)	Sensor value	Direct line
	Air conditioner pressure sensor
	Compressor with magnet clutch assembly (lock sensor)
	No. 1 cooler thermistor
	Idle up switch (w/ Idle Up Switch)	Idle up switch operation
	Heater switch assembly (w/ Viscous Heater)	Power heater switch operation
Blower with fan motor sub-assembly	Air conditioning amplifier assembly	Drive	Direct line
FR MGC relay
VISC HTR relay (w/ Viscous Heater)
PTC HTR relay (w/ PTC Heater)

Air Conditioning Amplifier Assembly ←→ Blower Motor, Sensor, etc. (w/ Integration Control Panel)

Receiver	Sender	Signal	Communication Line
Air conditioning amplifier assembly	Cooler thermistor (No. 2 room temperature sensor)	Sensor value	Direct line
	No. 2 cooler thermistor
Blower with fan motor sub-assembly	Air conditioning amplifier assembly	Drive	Direct line