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

Communication Table

Sender	Receiver	Signal	Communication Line
Air conditioning amplifier assembly	ECM	Magnetic clutch request signal	CAN
		Idle up request signal
		Heater idle up request signal
		Super cooling control state signal
		Cooling fan motor drive request signal
		Prior A/C control request signal
		Acceleration cut inhibit signal
		Ambient temperature signal before correction
		Refrigerant mass flow signal
		Evaporator fin temperature signal
		Variable compressor solenoid current signal
		Refrigerant gas pressure sensor signal
		RDEF drive request signal
		Ambient temperature display signal
Air conditioning amplifier assembly	Navigation receiver assembly*1 or Radio and display receiver assembly*2	AUTO indicator signal	CAN
		DEF indicator signal
		A/C indicator signal
		Blower level indicator signal
		Outlet indicator signal
		A/C on-screen request signal
		Driver temperature display signal
		Front passenger temperature display signal
		Blower step select information
		Control information status
		Ambient temperature display signal
		A/C control state signal
Air conditioning amplifier assembly	Combination meter assembly	Ambient temperature display signal	CAN
Air conditioning amplifier assembly	Main body ECU (multiplex network body ECU)	Ambient temperature display signal	CAN
		A/C control state signal
ECM	Air conditioning amplifier assembly	Engine coolant temperature signal	CAN
		Engine rpm data
		A/C control cut-off signal
		Variable control inhibition signal
		Air conditioner cut-off instruction flag at deceleration
		A/C super cooling command flag at deceleration
		Compulsory internal air circulation command signal at high coolant temperature
Main body ECU (multiplex network body ECU)	Air conditioning amplifier assembly	Destination symbol	CAN
		Destination package
		Steering wheel
		Engine starter condition
		Defogger on request
		A/C on request
Combination meter assembly	Air conditioning amplifier assembly	Vehicle speed signal (meter to other)	CAN
Air conditioning control assembly	Air conditioning amplifier assembly	AUTO switch operation signal	LIN
		OFF switch operation signal
		Blower switch operation signal (up, down)
		MODE switch operation signal
		DEF switch operation signal
		RDEF switch operation signal
		DUAL switch operation signal
		REC/FRS switch operation signal
		A/C switch operation signal
		Driver side set temperature switch operation signal
		Front passenger set temperature switch operation signal
Air conditioning amplifier assembly	Air conditioning control assembly	Entire front panel display instruction signal	LIN
		Auto display instruction signal
		Blower level display instruction signal
		A/C display instruction signal
		Rec display instruction signal
		Driver air outlet display instruction signal
		RDEF display instruction signal
		DUAL display instruction signal
		Entire front panel display instruction signal
		Driver set temperature display instruction signal
		Front passenger set temperature display instruction signal
		Dimmer signal

• *1: for Navigation Receiver Type

• *2: for Radio and Display Type