Blower Motor Speed Control
WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The blower speed control:
- is located on the heater core and evaporator core housing near the blower motor.
- converts low power signals from the dual-zone EATC module to a high current, variable ground feed for the blower motor.
- varies the blower motor speed and is controlled by the dual-zone EATC module software.
- has a delay function to provide a gradual increase or decrease in blower motor speed under all conditions.
- controls the integral high blower speed relay which is engaged when maximum fan speed is selected.