Blower Motor Speed Control

The blower speed control:

• is located on the heater core and evaporator core housing near the blower motor.
• converts low power signals from the DATC module to a high current, variable ground feed for the blower motor.
• varies the blower motor speed and is controlled by the DATC 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.