FULL-AUTO AIR CONDITIONER FUNCTION

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Block Diagram

• The control system consists of input components (sensors), output components (actuators, magnetic clutch, power MOS FET, and other parts), and a control device (front climate control unit).

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Control Table

• The full-auto air conditioner system functions based on the five basic types of controls and two supplementary functions.

×:Possible
-:Not possible

Basic control | Control description | Correction control | Front | Rear
--- | --- | --- | --- | ---
Airflow temperature control | Airflow temperature automatic control | MAX HOT and MAX COLD correction | × | ×
Air mix actuator opening angle correction | × | ×
Airflow volume control | Airflow volume automatic control | Warm-up correction | × | ×
Mild start correction | × | ×
MAX HOT and MAX COLD correction | × | ×
Defroster correction | × | -
Solar radiation correction | × | -
Airflow volume manual control | Defroster correction | × | -
Airflow mode control | Airflow mode automatic control | Warm-up correction | × | -
MAX HOT and MAX COLD correction | × | ×
Airflow mode manual control | ― | × | -
Air intake control | Air intake automatic control | MAX HOT and MAX COLD correction | × | -
Defroster correction | × | -
Air intake manual control | Defroster correction | × | -
A/C compressor control | A/C compressor automatic control | MAX HOT and MAX COLD correction | × | -
Defroster correction | × | -
A/C compressor manual control | Defroster correction | × | -

Supplementary function
Fail-safe function
On-board diagnostic function

Control Type Transition by Switch Operation (Front)

Airflow temperature control, airflow volume control

Operation switch | Airflow temperature control | Airflow volume control
--- | --- | ---
Control prior to switch operation | Control prior to switch operation
Automatic control Driver-side | Automatic control Passenger-side | Automatic control | Defroster correction | Manual control
Dual ON | Dual OFF | 1 | 2 | 3 | 4 | 5 | 6 | 7
OFF switch | Automatic control | Automatic control | Automatic control | OFF | OFF | OFF
AUTO switch | Automatic control | Automatic control | Automatic control | Automatic control | *6 | *6
Fan switch | + | Automatic control | Automatic control | Automatic control | Manual control*2 | Manual control*7 | 2 | 3 | 4 | 5 | 6 | 7 | 7
- | Automatic control | Automatic control | Automatic control | Manual control*3 | Manual control*8 | 1 | 1 | 2 | 3 | 4 | 5 | 6
MODE switch | Automatic control | Automatic control | Automatic control | Automatic control | *5 | No change
DEFROSTER switch | Automatic control | Defroster correction | Automatic control | Defroster correction | *5 | Defroster correction
A/C switch | Automatic control | Automatic control | Automatic control | Automatic control | No change | No change
REC switch | Automatic control | Automatic control | Automatic control | Automatic control | No change | No change
Driver-side temperature setting dial*1 | 15.0 | MAX COLD | Automatic control | MAX COLD | MAX HI *6 | No change | No change
15.5—31.5 | Automatic control | Automatic control | Automatic control | Automatic control | No change | No change
32.0 | MAX HOT | Automatic control | MAX HOT | AUTO HI*4 *6 | No change | No change
Passenger-side temperature setting dial*1 | 15.0 | Automatic control | MAX COLD | MAX COLD | MAX HI *6 | No change | No change
15.5—31.5 | Automatic control | Automatic control | Automatic control | Automatic control | No change | No change
32.0 | Automatic control | MAX HOT | MAX HOT | AUTO HI*4 *6 | No change | No change
DUAL switch | Automatic control | Automatic control | Automatic control | *6 | No change | No change

*1 :Adjusted up or down in increments of 0.5 within a range of 15.0—32.0.
*2 :Increases to the manual voltage that is closest to the auto voltage.
*3 :Decreases to the manual voltage that is closest to the auto voltage.
*4 :Warm-up correction takes precedence.
*5 :Returns to condition prior to defroster operation. However, if it had been off prior to defroster operation, it switches to automatic control.
*6 :MAX HOT and MAX COLD correction takes precedence.
*7 :Increases to the manual voltage that is closest to the defroster correction voltage.
*8 :Decreases to the manual voltage that is closest to the defroster correction voltage.

Airflow mode control, air intake control, A/C compressor control

Operation switch | Airflow mode control | Air intake control | A/C compressor control
--- | --- | --- | ---
Control prior to switch operation | Control prior to switch operation | Control prior to switch operation
Automatic control | Manual control | Automatic control | Manual control | Automatic control | Manual control
OFF switch | Fixed at mode before turned OFF | No change*2 | FRESH | No change | OFF | OFF
AUTO switch | Automatic control | Automatic control | Automatic control | Automatic control | Automatic control | Automatic control
Fan switch | + | Automatic control | No change | Automatic control | No change | Automatic control | No change
- | Automatic control | No change | Automatic control | No change | Automatic control | No change
MODE switch | VENT → BI-LEVEL BI-LEVEL → HEAT HEAT → HEAT/DEF HEAT/DEF → VENT DEFROSTER → HEAT | VENT → BI-LEVEL BI-LEVEL → HEAT HEAT → HEAT/DEF HEAT/DEF → VENT DEFROSTER →*2 | Automatic control*3 | No change*3 | Automatic control*6 | No change*6
DEFROSTER switch | DEFROSTER | DEFROSTER*2 | Defroster correction | Defroster correction*2 | Defroster correction | Defroster correction
A/C switch | Automatic control | No change | Automatic control | No change | A/C→OFF OFF→A/C*4 | A/C→OFF OFF→A/C*4
REC/FRESH switch | Automatic control | No change | FRESH→REC REC→FRESH*5 | FRESH→REC REC→FRESH*5 | Automatic control | No change
Driver-side temperature setting dial*1 | 15.0 | Automatic control | No change | Automatic control | No change | Automatic control | No change
15.5—31.5 | Automatic control | No change | Automatic control | No change | Automatic control | No change
32.0 | Automatic control | No change | Automatic control | No change | Automatic control | No change
Passenger-side temperature setting dial*1 | 15.0 | Automatic control | No change | Automatic control | No change | Automatic control | No change
15.5—31.5 | Automatic control | No change | Automatic control | No change | Automatic control | No change
32.0 | Automatic control | No change | Automatic control | No change | Automatic control | No change
DUAL switch | Automatic control | No change | Automatic control | No change | Automatic control | No change

*1 :Adjusted up or down in increments of 0.5 within a range of 15.0—32.0.
*2 :Returns to condition prior to defroster operation.
*3 :FRESH during HEAT/DEF
*4 :A/C is set at ON during DEFROSTER, HEAT/DEF, HEAT. Switches only to the A/C display. (L.H.D.) / A/C is set at ON during DEFROSTER. Switches only to the A/C display. (R.H.D.)
*5 :Set at FRESH during DEFROSTER, HEAT/DEF (L.H.D.) / Set at FRESH during DEFROSTER (R.H.D.)
*6 :A/C ON during HEAT/DEF

Control Type Transition by Switch Operation (Rear, SYNC off)

Airflow temperature control, airflow volume control, airflow mode control

Operation switch | Airflow temperature control | Airflow volume control | Airflow mode control
--- | --- | --- | ---
Control prior to switch operation | Control prior to switch operation | Control prior to switch operation
Rear fan on | Rear fan off | Automatic control | Manual control | Rear fan off | Automatic control | Manual control
Rear fan on | Rear fan on | Rear fan off | Rear fan on | Rear fan off
REAR | OFF switch | OFF | No change | OFF | OFF | No change | OFF | No change | OFF | No change
AUTO switch | No change | Automatic control | No change | Automatic control*7 | Automatic control*7 | No change | Automatic control | Automatic control | Automatic control
Fan switch | Up | No change | Automatic control | Automatic control*2 | 1→2 2→3 3→4 4→5 | Rear fan on (1st) | No change | Automatic control | No change | Fixed at mode before turned OFF
Down | No change | Automatic control | Automatic control*3 | 5→4 4→3 3→2 2→1 | Rear fan on (1st) | No change | Automatic control | No change | Fixed at mode before turned OFF
MODE switch | No change | No change | No change | No change | No change | VENT → BI-LEVEL*8 BI-LEVEL → HEAT*8 HEAT → VENT*8 | No change | VENT → BI-LEVEL BI-LEVEL → HEAT HEAT → VENT | No change
Temperature setting switch*1 | 15.0 | Max control | No change | MAX HI | No change | No change | No change | No change | No change | No change
15.5—31.5 | Automatic control | No change | Automatic control | No change | No change | No change | No change | No change | No change
32.0 | Max control | No change | AUTO HI*5 | No change | No change | No change | No change | No change | No change
FRONT | OFF switch | OFF*6 | OFF*6 | OFF*6 | OFF*6 | OFF*6 | OFF*6 | OFF*6 | OFF*6 | OFF*6
AUTO switch | No change | No change | No change | No change | No change | No change | No change | No change | No change
Fan switch | Up | No change | No change | No change | No change | No change | No change | No change | No change | No change
Down | No change | No change | No change | No change | No change | No change | No change | No change | No change
DEFROSTER switch | No change | No change | No change | No change | No change | No change | No change | No change | No change
Driver-side temperature setting dial*1 | 15.0 | No change | No change | No change | No change | No change | No change | No change | No change | No change
15.5—31.5 | No change | No change | No change | No change | No change | No change | No change | No change | No change
32.0 | No change | No change | No change | No change | No change | No change | No change | No change | No change
Rear control switch | Rear fan off | Automatic control*4, *6 | Rear fan off | Rear fan off | Automatic control*4, *6 | Rear fan off | Automatic control*4, *6 | Rear fan off | Automatic control*4, *6

*1 :Adjusted up or down in increments of 0.5 within a range of 15.0—32.0.
*2 :Increases to the manual voltage that is closest to the auto voltage.
*3 :Decreases to the manual voltage that is closest to the auto voltage.
*4 :Set to the driver-side airflow temperature setting dial position.
*5 :Warm-up correction takes precedence.
*6 :The SYNC is turned on.
*7 :Set to the rear airflow temperature setting dial position.
*8 :Manual control.

Control Type Transition by Switch Operation (Rear, SYNC on)

Airflow temperature control, airflow volume control, airflow mode control

Operation switch | Airflow temperature control | Airflow volume control | Airflow mode control
--- | --- | --- | ---
Control prior to switch operation | Control prior to switch operation | Control prior to switch operation
Rear fan on | Front and rear fan off | Automatic control | Front and rear fan off | Automatic control
Rear fan on | Rear fan on | Front and rear fan off
REAR | OFF switch | OFF*2 | No change | OFF*2 | No change | OFF*2 | No change
AUTO switch | Automatic control*2 | No change | Automatic control*2 | No change | Automatic control*2 | No change
Fan switch | Up | Automatic control*2 | No change | Automatic control*3 | No change | Automatic control*2 | No change
Down | Automatic control*2 | No change | Automatic control*4 | No change | Automatic control*2 | No change
MODE switch | Automatic control*2 | No change | Automatic control*2 | No change | VENT → BI-LEVEL*2,*7 BI-LEVEL → HEAT*2,*7 HEAT → VENT*2,*7 | No change
Temperature setting switch*1 | 15.0 | Max control*2 | No change | MAX HI*2 | No change | Automatic control*2 | No change
15.5—31.5 | Automatic control*2 | No change | Automatic control*2 | No change | Automatic control*2 | No change
32.0 | Max control*2 | No change | AUTO HI*2, *5 | No change | Automatic control*2 | No change
FRONT | OFF switch | OFF*2 | No change | OFF*2 | No change | OFF*2 | No change
AUTO switch | No change | Automatic control*6 | No change | Automatic control*6 | No change | Automatic control
Fan switch | Up | No change | Automatic control*6 | No change | Automatic control*6 | No change | Automatic control
Down | No change | Automatic control*6 | No change | Automatic control*6 | No change | Automatic control
DEFROSTER switch | No change | Automatic control*6 | No change | Automatic control*6 | No change | Automatic control
Driver-side temperature setting dial*1 | 15.0 | Max control | No change | MAX HI | No change | No change | No change
15.5—31.5 | Automatic control | No change | Automatic control | No change | No change | No change
32.0 | Max control | No change | AUTO HI*5 | No change | No change | No change
Rear control switch | Rear fan off*2 | No change | Rear fan off*2 | No change | Rear fan off*2 | No change

*1 :Adjusted up or down in increments of 0.5 within a range of 15.0—32.0.
*2 :The SYNC is turned off.
*3 :Increases to the manual voltage that is closest to the auto voltage.
*4 :Decreases to the manual voltage that is closest to the auto voltage.
*5 :Warm-up correction takes precedence.
*6 :Set to the driver-side airflow temperature setting dial position.
*7 :Manual control.