RAM 1500 Truck 4WD V8-5.7L VIN D (2005)
Blower Motor Switch: Description and Operation
The blower motor is controlled by a rotary-type blower motor switch (6), mounted in the A/C-heater control (1). The switch allows the selection of one
of four different blower motor speeds and includes an Off position.
The blower motor switch provides a ground path through the A/C-heater control. The blower motor switch directs the ground path through the
appropriate blower motor resistor wires, as required to achieve the selected blower motor speed.
The blower motor switch is diagnosed using a DRBIII(R) scan tool.
The blower motor switch cannot be repaired and, if faulty or damaged, the entire A/C-heater control must be replaced.
