Wiper blade working on max speed only

Hello

So my windscreen wipers can be only used on max speed and only this speed. Was time when was working few seconds on mid speed but after 2-3 seconds stopped in the middle of the windscreen. Atm only max available, fuses are fine- checked, cant find relay or relay module in my car. Pulled out today half of the dash and didnt find anything. Any ideas where it could be?

Thanks

 

Maybe was expecting have relay control unit same as says diagram schematic unfortunately in my case BCM does relay function , relays are first in line of fault, then might be something else, I might have relay on switch module itself as well. Control unit found for 10 quid so cheapest option so far, motor 150 up scrap yard 10 days waiting.

 

But there is one crown with brushes they provide connection to rotor and signal is usually controlled by relay or in my case BCM, there shouldn't be such archaic method with 1 brush for every speed ...or they are not that smart, so replaced brush should fix the issue.

 

Yes minimum 2 versions are available so far from my research. One has separate relay control unit




And one with integrated relay into swith from what I can see it might be mine case. Its wired directly to motor but it must have driver so presume it might comes with relay integrated into motor itself as well in some versions. It's really misleading when you are reading diagrams and then realised that there is more than this. Takes time but i think im closer than was just dont have time to dismantle swith and have a look what relay model have here.

 

As you can see there is many options, those you are pointing are those old type one relay in fuse box usually under the hood, mine has 2 relay boxes and one module for cooling fan under the dash in place extremely hard to reach. But wiper motor must have driver somewhere, I couldn't find anywhere took me 50min disassembly of the dash and 30min to assemble it, could go with first feelings that switch might have it before taking out dash. Its really small and compact in size to be honest, everything is soldered so quite difficult to reach and check it, amayama has 2 types of those switches for sale just in case.