Blower Motor: Description and Operation

Blower Motor System

The speeds for the auxiliary unit can be controlled from the front A/C control (19980) or rear auxiliary control.The front control auxiliary heater blower motor switch (18578) can control the rear unit by placing it in the HIGH, MEDIUM HIGH or MEDIUM LOW speeds. The AUX CTRL position allows control of the blower motor (18527) by the auxiliary heater blower motor switch, but all other front positions still override the auxiliary heater blower motor switch. When the front heater blower motor switch is in the AUX CTRL position, the heater blower motor switch on the auxiliary unit can provide speeds of HIGH, MEDIUM HIGH, MEDIUM LOW, LOW or OFF.