Blower Motor Speed Control

The blower speed control:

• is located on the heater core and evaporator core housing near the blower motor.
• Pulse width modulated (PWM) signals from the dual-zone EATC module to control 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.