Blow problem.Who can help me?

Hello family, since today my blower no longer works in my 406er. Last week it started off, but jumped again after some time. I removed the blower motor today and connected it directly to the battery. It runs perfectly. There is no current on the plug. There is no current on the 40A fuse. The fuses are OK(40A and 5A for the controller). In some forums I have read something about a relay or load resistance, but could unfortunately where this or this hides with me. Maybe you can help me, I have a 406 Break 2,2l HDI Fap EZ 5/01 with automatic air conditioning. SN 3003/537. Thanks in advance