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My gen 6 communications just stoped working, I thought it was the cable so I spent nearly 100.00 on a new one. It wasnt the problem. I didnt change anything on the laptop. It worked fine last year and had a couple of uses this year. I checked the 4 pin plug out of the ecm and I have a good ground and the other 3 pins have 5 volts presant with the key on. Any suggestions?