Sentra blower control switch help

I have a 93 sentra, the blower switch started going out , I lost some of the speeds only had 1 and 4, they finally went out also. I replaced the switch but now I only have high speed on the blower position 4. I know the switch was correct it was identical. I checked the relays and swapped it with another known good one but it still only gave me high speed. Can the blower motor itself be bad? I was thinking if the motor was working at all it was ok. Any help is apreciated.

thanks
Harley

blower motor resister . when bad normally will only blow on 4