Our Beaver coach is a 1995, it has a Cummins 8.3 mechanical (pre-coach house computer days) with 300 hp, Spartan chassis and an Allison MD3060 six speed. The ECU is under the keypad to shift the transmission. It is actually one piece but can be taken apart to service the keypad or ECU. I think my unit is a WTEC II (World Transmission Electronic Control II). I have a small console to the left of my left leg when sitting in the drivers seat. It is in that console and pretty easy to remove. The ECU controls the transmission and powers the keypad.
Put RV into heated storage last Winter with no previous shift issues (this coach is serviced meticulously with transmission fluids changed two years ago at Lazy Days in Florida and entire coach serviced prior to a 3000 mile trip last Fall).
Yesterday coach fired up ok, coach and chassis batteries, aired up to 90# pressure right away, rpms ok, air brake parking brake releasing ok.
Would not go into drive with touch pad or reverse right away, eventually would go into reverse, but no drive after trying for 3 + hours of running and shutting off in storage unit.
Ran transmission codes and saw d1 and a d2 only once? Have power to keypad (N & R light works, E mode switches back and forth).
ABS light on, but think I remember it staying on in past until I moved coach.
Hate to make this main focus as maybe a distraction from the problem, but could be the problem....the MOUSE had been in coach under our bathroom vanity. Did he chew on the wiring harness?
My options and wondering what to pursue myself:
* Have a spare brand new touch pad
* Bad ECU
My coach is a 5 hour drive to work on it, hoping to fix it myself, but have Coach-Net and if have to, will tow it to an Allison dealer, but hoping to save a few thousand and fix it myself.
Anybody else had this happen? So far my internet research shows about $2000 to replace a harness, $2400 for an ECU without labor (could change myself if I knew that is what it is.
Thank you....Mike