AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) SYSTEM DIAGRAM

Communication Table

Transmitter	Receiver	Signal	Communication Line
Air conditioning amplifier assembly	ECM	A/C idle up request signal	CAN
		Heater idle up request signal
		Motor cooling fan driver request signal
		PTC heater control request signal*
		Electricity load at low voltage state signal
		Variable compressor solenoid current signal
		Refrigerant gas pressure sensor signal
		Ambient temperature signal
Air conditioning amplifier assembly	Radio and display receiver assembly	A/C indicator signal
Main body ECU	Air conditioning amplifier assembly	Steering wheel location information signal
Combination meter assembly	Air conditioning amplifier assembly	Vehicle speed signal
		Outside temperature sensor data signal
ECM	Air conditioning amplifier assembly	Engine coolant temperature signal
		Engine speed data
		A/C control cut-off signal
		Variable control inhibition signal
		Engine type information signal
Air conditioning amplifier assembly	Air conditioning control assembly	Front panel indication signal	LIN
		AUTO indication signal
		Blower level indication signal
		A/C indication signal
		REC indication signal
		Rr DEF indication signal
		DUAL/SYNC indication signal
		Set temperature indication signal
Air conditioning control assembly	Air conditioning amplifier assembly	Separate A/C information signal
		AUTO operation switch signal
		OFF operation switch signal
		Blower operation switch signal (up, down)
		Driver seat outlet operation switch signal
		Fr DEF operation switch signal
		Rr DEF operation switch signal
		DUAL/SYNC operation switch signal
		Set temperature switch signal
		A/C switch signal

• *: w/ PTC Heater