Any Smart Smartcruise techs on the MOF today ?

[bmace]

Had a recent ECM ( Cummins iSX ) update by authorized Cummins shop
a month ago.

Since then, ( while sitting in my driveway going nowhere ) my cruise
dash lamp is off and no horn ? Everything else works.
Chk'd every fuse on all systems in both frt & rear bays incl the Smartcruise
box 3 amp ( all good ).

In reading older posts/threads I think I read something about having the Smartcruise on while having the ECM updated ?

Any ideas would be most appreciated.

[Mike Canter]

Bob, you need to go back to the guys that installed your ECM update and have them go in and check the setup and see if they turned it on. I had the same problem when I had my Detroit ECU replaced. Don't know about your horn.

[bmace]

Thks Mike
Yes, I agree this could be the problem which I will pursue with my Cummins when I get a chance to et y coach in there.

One more ? How will I know if my Smartcruise is on or off while they reflash it ?
I now get no light on the dash indicating the criuise is on.

My understanding is, the Smartcruise must be on when the ECM update is in progress ?

Cheers

[Mike Canter]

That maybe that the Smartcruise has to be on. Each ECM/ECU setup is different. Not sure how the Cummins one is. On the Detroit they don't actually flash it they load the software from a laptop then the can setup all the parameters for the type of vehicle via the laptop.It is probably very simple but just a pain on that you have to take th MH back in.

[bmace]

Got it, thks ver much for you adv & help