PICO have done a programme just for DAF .it’s new so haven’t had a play yet ,but it should be idiot proof ,has colour pics of what connectors to use and where to place them ,then a pic of what you should see on the screen ,so you can compare what you have to what you should have …Will even give a graph of batt state when cranking …should be good ,but it is only an assist to diagnosis.You still have to use your brain and experience ,not forgetting the touch and see senses we have ,better than any computer 