Does the Avensis T27 come with a blower resistor? Blower Motor not working at all speeds

[CharlieAvensis]

Hi, I have been looking at some Avensis diagrams and it seems my car does not come with a blower resistor, So how does the blower motor get controlled? Is it by the AC amplifier?

Right now, my blower only works on the highest setting, if you decrease the speed by one bar, it goes off after a while, say about 3 minutes. If you decrease the speed by 2 bars, the blower goes off in like 10 seconds. Anything below that and the blower motor would not turn on. 

This all started when a Nigerian shade tree mechanic was working on something down there and after he was done, I had no more variable speeds on my fan .

I want to rectify this problem and was thinking it would be as simple as changing the blower resistor, but according to the image below, it seems my car doesn't have one.

 

So please guys, how do I fix this problem?