Dave in Ohio
Member
Both Friday and Saturday the same thing happened. After driving about 60 mph for a bit less than an hour, I noticed that the Allison shift controller was blank. (Normally it would show "6 6" with the word "MODE" under the right "6". Friday I drove about an hour more to a repair shop, and as I was pulling in I noticed that the display was again working normally. Saturday I drove about 20 minutes more to a truck stop and again the display started working normally as I pulled in. In both cases, I then turned the engine on and off a couple of times, shifted into all the gears a couple of times, cycled mode a couple of times, and, upon seeing consistent proper operation, continued driving for 5 or 6 hours with no problems.
My rig is a 2015 Newmar Ventana on a Freightliner XC Raised Rail chassis with Cummins ISB6.7 engine and Allison 3000MH transmission. Weather was clear with temps in the 30s.
While driving on the first day, I talked with Freightliner customer service. They warned me not to stop the engine until I was sure it was in Neutral as it won't start again if still in gear. They also suggested two 10 amp fuses as the likely culprit.
Today I looked for the fuses. As seen in the attached pictures, there are two spaces marked "XMSN SHIFT (OPT) 10A", both of which are empty.
Any ideas on where to start tracking this down would be much appreciated! Thanks!
My rig is a 2015 Newmar Ventana on a Freightliner XC Raised Rail chassis with Cummins ISB6.7 engine and Allison 3000MH transmission. Weather was clear with temps in the 30s.
While driving on the first day, I talked with Freightliner customer service. They warned me not to stop the engine until I was sure it was in Neutral as it won't start again if still in gear. They also suggested two 10 amp fuses as the likely culprit.
Today I looked for the fuses. As seen in the attached pictures, there are two spaces marked "XMSN SHIFT (OPT) 10A", both of which are empty.
Any ideas on where to start tracking this down would be much appreciated! Thanks!
