Who knows about FCCC "MMDC" and its issues?
Gents, I've searched and read many issues regarding the old "VDC" units and the newer MMDC units. I'm thinking I may have developed an MMDC issue. Here's the scenario. We're presently on vacation and...
Forum Discussion
FIRE UP wrote:
dougmac,
On the back of my MMDC, the controller for the annunciator panel and all the gauges is a 24 pin connector and a 10 pin connector. Among all the wires that are entering the back of the plug to the 24 pin connector are two that appear to be the J1939 wires. They are green and yellow and are twisted. I got that far. But, from there, they travel deep inside that loom and go to who knows where.
If I were at home, in my own environment, and didn't have WIND BLOWING THE PAINT OFF THE RIG as it's almost been doing for the past three to four days, I'd do more to take this project on. But, being on the road, the wife and the dog with me, in not so good camp spots, Wind blowing everything, not having anywhere near all my tools, I'm really out of my element here.
This will be the FIRST TIME I've EVER had to PAY for someone to fix MY RV!!!! Boy, does that suck! I've got an appointment with Freightliner tomorrow morning at 08:00 to get this thing in there and see what they can come up with.
Scott
If you could identify the pins on the connector that the wires go to you can see if you have a good connection to the data link by checking the resistance between the two pins. If it is around 60 ohms, you have a good connection to the data link. You want to be sure the other controllers connected to the data link are shut down when you are testing.
