Hello!
Okay, may be the cable is broken or the autohex HW4. I'm not able to read out any ECU, tested it also with a EDC17CP50, same result. My voltmeter shows only 1,7 V, sometimes 4,7V between red and black cable when I try to read out a DME/DDE - 12V supply is connected and the program shows me 12,2V. Can high and low is working (around 2,5 V).
CU Oliver