Air Inlet Door Mode Door Actuator

The air inlet door mode door actuator is located on the heater core and evaporator core housing. The air inlet door position determines whether outside or recirculated air is being used.

• The actuator positions the air inlet door on command from the dual-zone EATC module.
• The air inlet door mode door actuator contains a reversible electric motor and a potentiometer.
• A 5-volt signal and ground reference is applied to the ends of the potentiometer. The voltage available at the wiper indicates the position of the potentiometer. The target position of the actuator is calculated by the dual-zone EATC module and is matched with the wiper voltage of the actuator. The control module will drive the actuator motor in the direction necessary to make the actuator wiper voltage agree with the control module target position.