Purpose
The airflow mode actuator moves the mode door in the A/C unit to switch the air vent.
Function
Door open/close function
The airflow mode actuator drives the motor based on the signal from the climate control unit and moves the mode door to the VENT, BI-LEVEL, HEAT, DEF/HEAT, or DEFROSTER position.
Door position detection function
The airflow mode actuator detects the changes in the mode door position using the potentiometer in conjunction with the motor drive and gives feedback to the climate control unit based on the electric signals.
Construction
A potentiometer-type airflow mode actuator has been adopted.
The airflow mode actuator is installed to the passenger's side in the A/C unit.
Operation
1. The climate control unit determines the airflow mode actuator target voltage based on the mode position determined by the airflow mode control.
2. The climate control unit compares the voltage detected by the potentiometer in the airflow mode actuator with the target voltage.
3. When the voltage detected by the potentiometer differs from the target voltage, the climate control unit outputs a motor drive signal.
4. When the voltage detected by the potentiometer is equal to the target voltage, the climate control unit stops the motor drive signal to the airflow mode actuator.
Fail-safe
Function not equipped.
Electrical Fan Control
Outline
Through cooling of the radiator and condenser by operation of the cooling
fan according to vehicle conditions, engine reliability and cooling performance
have been improved.
Block Diagram
Operation
The PCM determines the demand airflow volume by the following c ...
Master Cylinder
Purpose/Function
With the adoption of the master cylinder having an enlarged diameter (20.64
mm {0.8126 in}), brake pedal operability has been improved.
For vehicles with DSC, the diameter of the pipe between the master cylinder
and the DSC HU/CM has been increased, improving re ...
Airflow Temperature Control [Full Auto Air Conditioner]
Purpose
The airflow temperature control changes the airflow temperature according
to the vehicle conditions.
Function
The air mix actuator is driven and the air mix door position is changed according
to the set temperature and the vehicle environment.
The climate co ...