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

COMMUNICATION SYSTEM FUNCTION

1. The air conditioning amplifier assembly communicates with each ECU via CAN communication and LIN communication. Additionally, the air conditioning amplifier assembly sends operation signals to each damper servo motor and receives damper position information and sensor information from the damper servo motors and No. 1 cooler thermistor through the air conditioning harness assembly.

   Air Conditioning Amplifier Assembly ←→ Airbag Sensor Assembly

   Receiver	Sender	Signal	Communication Line
   Air conditioning amplifier assembly	Airbag sensor assembly	Front passenger seat occupant status signal	CAN

   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 signal	CAN
   		Front passenger door courtesy switch signal
   		Rear right door courtesy switch signal
   		Rear left door courtesy switch signal
   		High beam headlight request signal
   		Low beam headlight request signal
   		Front fog light request signal
   		Destination symbol signal
   		Country code signal
   		Steering wheel signal
   		Solar data (R) signal
   		Solar data (L) signal
   Main body ECU (multiplex network body ECU)	Air conditioning amplifier assembly	Rear defogger drive request signal	CAN
   		Ambient temperature display signal

   Air Conditioning Amplifier Assembly ←→ Power Steering ECU (Rack and Pinion Power Steering Gear Assembly)

   Receiver	Sender	Signal	Communication Line
   Air conditioning amplifier assembly	Power steering ECU (rack and pinion power steering gear assembly)	Loading control level signal	CAN
   Power steering ECU (rack and pinion power steering gear assembly)	Air conditioning amplifier assembly	Ambient temperature display signal	CAN

   Air Conditioning Amplifier Assembly ←→ Combination Meter Assembly

   Receiver	Sender	Signal	Communication Line
   Air conditioning amplifier assembly	Combination meter assembly	Vehicle speed signal (meter to other)	CAN
   		Front passenger presence signal
   Combination meter assembly	Air conditioning amplifier assembly	Ambient temperature display signal	CAN
   		Ambient temperature display whole number/decimal (0/0.5°C) signal
   		A/C load limitation warning signal

   Air Conditioning Amplifier Assembly ←→ Air Conditioning Control Panel (Radio and Display Receiver Assembly) (for 8 Inch Display)

   Receiver	Sender	Signal	Communication Line
   Air conditioning amplifier assembly	Air conditioning control panel (radio and display receiver assembly)	AUTO switch state signal	CAN
   		Front defroster switch state signal
   		Rear defogger switch state signal
   		Air inlet switch state signal
   		OFF switch state signal
   		A/C switch state signal
   		DUAL/3 ZONE switch state signal
   		Mode switch state signal
   		Blower up switch state signal
   		Blower down switch state signal
   		Driver side TEMP up switch state signal
   		Driver side TEMP down switch state signal
   		Front passenger side TEMP up switch state signal
   		Front passenger side TEMP down switch state signal
   		Driver side seat speech recognition operation mode information signal
   		Driver side seat speech recognition data addition subtraction information signal
   		Driver side seat speech recognition temperature directions data signal
   		Front passenger side seat speech recognition operation mode information signal
   		Front passenger side seat speech recognition data addition subtraction information signal
   		Front passenger side seat speech recognition temperature directions data signal
   Air conditioning control panel (radio and display receiver assembly)	Air conditioning amplifier assembly	A/C display request signal	CAN
   		AUTO indicator signal
   		Front defroster indicator signal
   		Rear defogger indicator signal
   		Recirculation indicator signal
   		A/C indicator signal
   		DUAL/3 ZONE indicator signal
   		Blower level indicator signal
   		Outlet indicator signal
   		nanoe indicator signal
   		Blower customize indicator signal
   		Driver side temperature display signal
   		Front passenger side temperature display signal
   		A/C eco state indicator signal
   		Temperature unit select information signal
   		Speech recognition level information signal
   		Control information status signal
   		Rear defogger drive request signal
   		Mirror heater drive request signal
   		In-vehicle temperature signal
   		Ambient temperature display signal
   		Ambient temperature display whole number/decimal (0/0.5°C) signal

   Air Conditioning Amplifier Assembly ←→ ECM (for 2AR-FE)

   Receiver	Sender	Signal	Communication Line
   Air conditioning amplifier assembly	ECM	Drive mode select signal	CAN
   		Engine type information signal
   		Engine r/min data signal
   		Alternative field duty value signal
   		Engine coolant temperature signal
   		A/C control cut-off signal
   		Variable control inhibition signal
   		Compulsory internal air circulation at high coolant temperature command signal
   ECM	Air conditioning amplifier assembly	Idle up request signal	CAN
   		ECO switch information signal*
   		Heater idle up request signal
   		Charging control inhibit signal
   		Prior A/C control request signal
   		Acceleration cut inhibit signal
   		Generator control inhibit signal
   		Request control by refrigerant signal
   		Ambient temperature before correction signal
   		Refrigerant information signal
   		Evaporator temperature sensor signal
   		Variable compressor solenoid current signal
   		Air conditioner pressure sensor signal
   		Rear defogger drive request signal
   		Ambient temperature display signal

   
   

   • *: w/ ECO Switch

   Air Conditioning Amplifier Assembly ←→ ECM (for A25A-FKS)

   Receiver	Sender	Signal	Communication Line
   Air conditioning amplifier assembly	ECM	Drive mode select signal	CAN
   		Engine type information signal
   		Engine r/min data signal
   		Alternative field duty value signal
   		Engine coolant temperature signal
   		A/C control cut-off signal
   		Variable control inhibition signal
   		Compulsory internal air circulation at high coolant temperature command signal
   		Flag for water stop valve close condition signal
   		Heater core flow rate signal
   ECM	Air conditioning amplifier assembly	Idle up request signal	CAN
   		Heater idle up request signal
   		Charging control inhibit signal
   		Prior A/C control request signal
   		Acceleration cut inhibit signal
   		Generator control inhibit signal
   		Request control by refrigerant signal
   		Ambient temperature before correction signal
   		Evaporator temperature sensor signal
   		Variable compressor solenoid current signal
   		Air conditioner pressure sensor signal
   		Rear defogger drive request signal
   		Ambient temperature display signal
   		Heater priority request signal
   		FSV close request signal
   		Minimum heater flow request signal

   Air Conditioning Amplifier Assembly ←→ ECM (for 2GR-FKS)

   Receiver	Sender	Signal	Communication Line
   Air conditioning amplifier assembly	ECM	Drive mode select signal	CAN
   		Engine type information signal
   		Engine r/min data signal
   		Alternative field duty value signal
   		Engine coolant temperature signal
   		A/C control cut-off signal
   		Variable control inhibition signal
   		Compulsory internal air circulation at high coolant temperature command signal
   ECM	Air conditioning amplifier assembly	Magnet clutch request signal	CAN
   		Idle up request signal
   		Heater idle up request signal
   		Charging control inhibit signal
   		Prior A/C control request signal
   		Acceleration cut inhibit signal
   		Generator control inhibit signal
   		Request control by refrigerant signal
   		Ambient temperature before correction signal
   		Refrigerant information signal
   		Evaporator temperature sensor signal
   		Variable compressor solenoid current signal
   		Air conditioner pressure sensor signal
   		Rear defogger drive request signal
   		Ambient temperature display signal

   Air Conditioning Amplifier Assembly ←→ Air Conditioning Control Assembly (except 8 Inch Display)

   Receiver	Sender	Signal	Communication Line
   Air conditioning amplifier assembly	Air conditioning control assembly	Independent control A/C information signal	LIN
   		AUTO switch operation signal
   		OFF switch operation signal
   		A/C switch operation signal
   		Blower switch operation signal
   		Air outlet switch operation signal
   		Front defroster switch operation signal
   		Rear defogger switch operation signal
   		DUAL switch operation signal
   		Driver side set temperature switch operation signal
   		Front passenger side set temperature switch operation signal
   		Recirculation/fresh switch operation signal
   Air conditioning control assembly	Air conditioning amplifier assembly	ECO display instruction signal	LIN
   		Entire front panel display instruction signal
   		AUTO display instruction signal
   		Blower level display instruction signal
   		Recirculation display instruction signal
   		Air outlet display instruction signal
   		Rear defogger display instruction signal
   		DUAL display instruction signal
   		Driver side set temperature display instruction signal
   		Front passenger side set temperature display instruction signal
   		Dimmer signal
   		nanoe indicator signal
   		A/C display instruction signal

   Air Conditioning Amplifier Assembly ←→ Cooler Control Switch Assembly (for 3 Zone Type)

   Receiver	Sender	Signal	Communication Line
   Air conditioning amplifier assembly	Cooler control switch assembly	Rear side set temperature switch operation signal	LIN
   Cooler control switch assembly	Air conditioning amplifier assembly	Rear side set temperature display instruction signal

   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 position signal	LIN
   	No. 2 air conditioning radiator damper servo sub-assembly
   	No. 3 air conditioning radiator damper servo sub-assembly*
   	No. 1 blower damper servo sub-assembly
   No. 1 air conditioning radiator damper servo sub-assembly	Air conditioning amplifier assembly
   No. 2 air conditioning radiator damper servo sub-assembly
   No. 3 air conditioning radiator damper servo sub-assembly*
   No. 1 blower damper servo sub-assembly

   
   

   • *: for 3 Zone Type

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

   Receiver	Sender	Signal	Communication Line
   Air conditioning amplifier assembly	Cooler (room temp. sensor) thermistor	Sensor value signal	Direct line
   	Thermistor assembly
   	Air conditioner pressure sensor
   	No. 1 cooler thermistor
   	Magnet clutch assembly*2	Operation signal
   	Ion generator sub-assembly*3	Operating state signal
   	ECO switch assembly (electric parking brake switch assembly)*4	ECO switch signal
   Blower motor with fan sub-assembly	Air conditioning amplifier assembly	Drive signal
   Compressor assembly with pulley (compressor solenoid)*1
   Cooler compressor assembly (compressor solenoid)*2
   MG CLT relay*2
   Ion generator sub-assembly*3

   
   

   • *1: except 2GR-FKS

   • *2: for 2GR-FKS

   • *3: w/ Ion Generator

   • *4: w/ ECO Switch