I do not have the schematic infront of me, but if I remember correctly any components in the resistor pack that fails will result in loosing all fan speeds except high (max fan speed).
The high speed setting is bypassed in the resitor pack. In other words if this pack is blown, the high speed is unafected.
Your problem seems to be the oposite. So I would suspect the switch assembly and possible the wiring.
Last edited by jborge; 03/30/04 05:23 AM.