Intake Door Control System Description

INTAKE DOOR CONTROL SYSTEM


System Description

The intake door is automatically controlled by the temperature setting, ambient temperature, in-vehicle temperature, intake temperature, amount of sunload and ON/OFF operation of the compressor.

SYSTEM OPERATION
The intake door control judges intake door position based on the ambient temperature, the intake air temperature and the in-vehicle temperature. When shifting mode position D/F, when the DEF or OFF switches are pressed, or when A/C switch is OFF, the unified meter and A/C amp. sets the intake door at the FRE position.

Door Motor Circuit
Without left and right ventilation temperature separately control system





With left and right ventilation temperature separately control system






Intake Door Control Specification
- Intake door position is basically fixed at FRE when FRE indicator of intake switch is ON or DEF switch is ON.





- Intake door position is basically fixed at REC when REC indicator of intake switch is ON.
- Intake door automatic control selects FRE, 20 - 80% FRE, or REC depending on a target air mix door opening angle, based on in vehicle temperature, ambient temperature, and sunload.