Skylark V6-3100 3.1L VIN M SFI (1996)
Blower Motor: Initial Inspection and Diagnostic Overview
Circuit Operation
The Blower Motor circuit employs the following components:
^
Blower Motor
^
Blower Resistor Assembly
^
Blower Motor Relay
^
Blower Switch
^
Mode Selector
With Ignition Switch in "RUN," battery voltage is applied to the Mode Selector. The Mode Selector energizes the Blower Switch when any selection
except "OFF" is made. With the Blower Switch set to "LOW," battery voltage is applied to the Blower Motor through the Blower Resistor Assembly and
the normally closed contacts of the Blower Motor Relay. The Blower Motor runs in low speed. When the Blower Switch is in the "II" or "III" 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 "II" and even faster in "III" 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 840 through the relay directly to the Blower Motor. The Blower Motor then runs at
high speed.
