Rio L4-1.5L (2001)
Blower Motor: Description and Operation
Blower
The blower draws in hot passenger compartment air and sends it through evaporator coil. It consists of a blower fan and an electric motor.
Blower motor
Blower motor speed is controlled by blower switch and a resistor assembly in blower unit. When blower switch is in OFF position, motor ground circuit
is open and blower motor does not operate. When switch is in first (LO) position, current flow to blower motor is restricted by three resistors in resistor
assembly, and blower motor turns at a low speed. Changing blower switch to second (M1), third (M2), or fourth (HI) positions causes successive
decreases of circuit resistance, resulting in blower motor speed becoming correspondingly faster.
