1A–96 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Actuator
The actuators are power driven type containing a small
motor. Receiving output current from the automatic air
conditioner control unit, actuators drive the heater and
blower unit mode doors.
Actuators consist of the mode actuator used for switching
the mode (blow port selection), the mix actuator used for
changing aperture of the air mix door, the intake actuator
used for switching the intake mode(fresh air/interior air)
and the cold air bypassing actuator.
860R200008
Legend
(1) Mix Actuator
(2) Intake Actuator
(3) Blower Unit
(4) Mode Actuator
(5) Heater Unit
The actuator changes the motor speed using the gear
and drives each door rotating the output axis united with
the sliding contact.
860RW026
Legend
(1) Output Axis
(2) Motor
(3) Printed Circuit Board
(4) Sliding Contact
The mode and mix actuators are common actuators with
the built–in potentiometer. For the intake actuator, the
contact switch type is selected.
The potentiometer is a register assembled to the printed
circuit board of the mix and mode actuators. It detects the
air mix door position specified by rotation of the output
axis as a ratio of the variable terminal (VM) voltage
against the reference voltage (VDD: 5V), then signals the
value to the automatic air conditioner control unit.
C01RX016