Bonneville V6-231 3.8L VIN 3 SFI (1988)
Blower Motor: Description and Operation
Manual Climate Controls
DESCRIPTION
The Blower Motor speed is controlled by the Blower Switch in the A/C Control Head.
OPERATION
With the switch in LO, all of the Blower Resistors are in the circuit with the Motor so that it runs slowly. In the M1 and M2 positions, the Blower
Switch bypasses some of the resistors, increase the motor speed.
Blower Motor is fed through the contacts of the Blower Relay. When the Blower Switch is in HI, battery voltage is supplied through the ORN wire to
the coil of the Blower Relay. The relay is energized and its contacts supply battery voltage directly to the Blower Motor from Fusible Link B. The
Blower Motor runs at maximum speed.
When the Mode Selector is in OFF, no voltage is applied to the Blower Switch and Motor so the blower does not run. In all other positions, the blower
operates as described.
