Volvo Repair: Volvo Climate Control, automatic climate control, fuse box

Question
I have a 1993 850 4D Sedan Volvo. It has the automatic climate control. I purchased the car knowing that the fan did not work. Before I did any part replacing, I was able bypass the control module in the car to the fuse box and got the fan to turn on to power 4 speed. I repace the Cilmate control box with a used on and nothing changed. I replaced the motor resistor. That did not change the function, as the fan will not be able to trun on. I also can not bypass to the motor directly at the fuse box. So the motor does not work at all or I can't get it to work. Do you have any suggestions about how I might be able to get the motor to work and blow air out of the vents? Please help. Thanks

Answer
if you supply a power and ground to the motor and it will not work now it is probably bad.I have seen many problems with this type system.from bad relays to bad power stage units,bad motors,to bad climate control modules which is the control panel.when replacing the cliamte control unit(control panel)there was a bulletin for adding an additional wire to the system so the new style control panel would work properly.since there are many possiblities it will really need to be fault traced with the useof a wiring diagram.