Jake Brake Problem

[Leroy Eckert]

I cannot help you since you have a S60. I assume DDEC III. I doubt that the ATEC and WTEC are the same. The DDEC on mine is on the top rear of the engine. It is a large rectangular sealed box. If it has not been painted the numbers should be on the wires. Without a diagram I don't know what to tell you. Maybe someone on the site has a schematic. Just keep in mind that other than the fuel allocation system to the injectors and in your case the Jake system the remainder of the DDEC is basically a monitor and is preprogrammed with acceptable parameters; receives information from several sensors or senders and reacts to them if the data is outside the parameters..That is how I understand it. It is not really as smart as the newer models and the codes just steer you in a general direction. If I can find it, I will post a link to the general layout of the DDEC III. It will not be coach specific but should give you a general idea of what you are dealing with. Leroy Eckert 1990 WB-40 Smoke N Mirrors Dahlonega, GA Royale Conversion --- On Thu, 9/18/08, Johnny M Slone wrote: From: Johnny M Slone Subject: [WanderlodgeForum] Re: Jake Brake Problem To: WanderlodgeForum@yahoogroups.com Date: Thursday, September 18, 2008, 8:38 AM I wonder if ATEC and WTEC are the same trans ECU. The schematic I have from the Allison website. Leroy I'm not sure that I have the drawing you mention as I didn't get many with the coach. Kurt, would these pin locations be at the trans ECU and DDEC. My big problem is that I can understand a trouble on paper but cannot locate where it on the coach. Comes with age I guess. Thanks. Johnny Slone Pikeville, Ky 98 LXI