Jon G posted:A common problem with lack of any or a weak DCS signal on MTH PS3 diesels is routing of the wires from the 40 pin harness under the 4 large capacitors on the PS3 board. Carefully pull the wires from under the caps, flatten the caps against the board and route the wires above the caps on top of the board. I like to push the caps back against the leads so that the legs form a 90 degree angle. Also, as mentioned above, try to route wires away from the exposed coil next to 8 pin plug, although this is not as important as clearing the area under the caps (the coil strips the DCS signal from track power). Pay careful attention when reinstalling the shell to be sure that no wires above the cab will not rub the flywheel and that wires are not pinched under body posts or frame sides. Any engine that I service at MTH is checked for this issue and corrected.
Jon, Interesting, the bulletin on this did not mention under cap wires. In conversations with Don, he stated he can see the impact of specific wires next to the signal transformer degrade DCS Signal. G
