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CLIMATE CONTROL UNIT [FULL-AUTO AIR CONDITIONER]

Purpose

The climate control unit controls the air conditioner in conjunction with the operation by the user and the vehicle driving conditions.

Functions

The climate control unit determines the air-conditioning conditions based on the input signals from each sensor and the control module and the operation signals from the control panel, and controls each actuator, A/C compressor, and the blower motor.(See FULL-AUTO AIR CONDITIONER SYSTEM [FULL-AUTO AIR CONDITIONER].)

Automatic configuration function

When the ignition is switched ON (engine off or on) after the climate control unit is replaced, the climate control unit reads the vehicle specification information sent via the CAN signal from the instrument cluster, and stores the vehicle specification information.

The vehicle specification information recorded by the climate control unit is not erased even if the ignition is switched OFF (LOCK).

The vehicle specification information recorded by the climate control unit is erased if the battery power is disconnected.

Construction

A logic-type climate control unit has been adopted.

The climate control unit consists of a control panel and a control unit.

The switches and dials shown in the figure are positioned on the control panel.

Operation

The climate control unit performs the controls shown in the following table.

		Airflow temperature control	Airflow volume control			Airflow mode control
Operation switches/dials		Control condition before switch operation	Control condition before switch operation			Control condition before switch operation
Operation switches/dials		Automatic control	Automatic control	Manual control	Defroster control	Automatic control	Manual control	Defroster control
Airflow volume control dial	OFF	No change	OFF	OFF	OFF	Fixed at mode when turned off	No change	No change
	AUTO		No change	Automatic control	No change	No change
	1???7		Manual control	Manual control	Manual control	No change
MODE dial	AUTO	No change	No change	No change	Automatic control	No change	Automatic control	Automatic control
	Vent					Manual control	Manual control	Manual control
	Bi-level
	Heat
	DEF/HEAT
	Defroster		Defroster control		Defroster control	Defroster control	Defroster control	No change
Temperature setting dial	15 (°C)/60 (°F)	MAX control	MAX HI	No change	MAX HI	No change	No change	No change
	16???28 (°C)/61???83 (°F)	Automatic control	No change		No change
	29 (°C)/84 (°F)	MAX control	AUTO HI^*1		AUTO HI
RECIRCULATE switch		No change	No change	No change	No change	No change	No change	No change
A/C switch		No change	No change	No change	No change	No change	No change	No change
Rear window defogger switch		No change	No change	No change	No change	No change	No change	No change

^*1: Water temperature correction takes precedence.

		Air intake control		A/C compressor control
Operation switches/dials		Control condition before switch operation		Control condition before switch operation
		Manual control	Defroster control	Automatic control	Defroster control
Airflow volume control dial	OFF	No change	No change	OFF	OFF
	AUTO			No change	No change
	1???7
MODE dial	AUTO	No change	Manual control^*1	No change	Automatic control^*1
	Vent
	Bi-level
	Heat
	DEF/HEAT
	Defroster	Defroster control	No change	Defroster control	No change
Temperature setting dial	15 (°C)/60 (°F)	No change	No change	No change	No change
	16???28 (°C)/61???83 (°F)
	29 (°C)/84 (°F)
RECIRCULATE switch		Manual control	Defroster control	No change	No change
A/C switch		No change	No change	Automatic control	Defroster control
Rear window defogger switch		No change	No change	No change	No change

^*1: Returns to status prior to defroster control.

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Knowledge Base

CLIMATE CONTROL UNIT [FULL-AUTO AIR CONDITIONER]

Purpose

Functions

Automatic configuration function

Construction

Operation