RAM 3500 Truck 4WD V10-8.0L VIN W (1997)
Blower Motor: Description and Operation
System Operation
SYSTEM OPERATION
The blower motor and blower wheel are located in the right end of the heater-A/C housing, below the glove box. The blower motor controls the
velocity of the air flowing through the heater-A/C housing by spinning a squirrel cage-type blower wheel within the blower housing at the selected
speed. The blower motor and blower wheel can be serviced from the passenger compartment side of the housing.
The blower motor will only operate when the ignition switch is in the On position, and the heater-A/C mode control switch is in any position
except Off. The blower motor receives battery feed through the contacts of the blower motor relay, whenever the ignition switch is in the On
position. The blower motor battery feed circuit is protected by a fuse in the fuse- block module. Blower motor speed is controlled by regulating the
ground path through the heater-A/C mode control switch, the blower motor switch, and the blower motor resistor.
The blower motor and blower wheel cannot be repaired and, if faulty or damaged, they must be replaced. The blower motor and blower wheel are
each serviced separately.
