Achieva V6-3100 3.1L MFI VIN M (1994)
Blower Motor: Description and Operation
Heater
CIRCUIT OPERATION
The Blower Motor circuit employs the following components:
^
Blower Motor
^
Blower Resistor Assembly
^
Blower Switch
^
Blower Motor Relay
^
Mode Selector
With the Ignition Switch in "RUN," battery voltage is applied to the Mode Selector. The Mode Selector funnels power to the Blower Switch in all
modes but "OFF." With the Blower Switch set to "Low" battery voltage is applied to the Blower Motor though the Blower Resistor Assembly and
the normally closed contacts of the Blower Motor Relay. The Blower Motor runs at low speed. When the Blower Switch is in the "M1" or "M2"
positions, the operation is similar to the operation in "LOW" except the resistance through the Blower Resistor Assembly is decreased, causing the
Blower Motor to run faster in "M1" and even faster in "M2." When "HIGH" blower speed is selected, the Blower Switch applies voltage to the
Blower Motor Relay coil. The Blower Motor Relay is energized, applying voltage from CKT 2 through the relay directly to the Blower Motor.
The Blower Motor then runs at high speed.
