Blower Motor Control Module
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The blower motor and the blower motor speed control are combined into one assembly called the blower motor control module. The blower motor pulls air from the air inlet and forces it into the climate control housing where it is mixed and distributed. The blower motor control module uses a PWM signal from the FCIM to determine the desired blower speed and varies the ground feed for the blower motor to control the speed.