HFS-6 wiring for Volvo ME7

[Aleibcas]

Finally I solved the problem, reading to another guy that had a faulty FCM in the HFS-6 forum. Then, testing the system, no bars got illuminated during the test neither on the road. Instead of that, the B gets lighted when the system is injecting, and with not too much pressure, I presume, since large drops comes from the injector and not a mist.
The yellow led is not lighted, so I suppose that it is not in fail safe mode. Any idea?

I also need to buy a flow restrictor, but they are not in the shop.
It is possible to find the 0,5mm one anywhere?

Thank you,

Alex.