Service manual

CANDoo Professional
97
3.1.2.1.2) > Diagnostic Session Details(See 3.1.2.1.2.2) > Keys Tab(See
3.1.2.1.2.2.2) >
Disabling DESS
3.1.2.1.2.2.2.4)
(See
3.1.2.1.2.2.3)
The developers of CANDooPro have included an experimental feature to disable the DESS
function. The reason it is called "experimental" is because it doesn't always work, and appears to
render some early MPEM's useless. After turning a few early MPEM's into expensive
paperweights, we decided not to do a full listing of what MPEM's it works on, and which it doesn't.
We have had good success with 97 and newer MPEM's that are not installed inside the sealed
electric boxes.
Users of the CANDooPro system are strongly advised not to disable dess on your MPEM's unless
you accept the risk that it may become inoperable. We have successfully disabled DESS on a few
older MPEM's for the 717 engine, but have noticed that the procedure kills the MPEM's on the 95-
96 787 engines as well as the 98-99 787 engines installed in the X-4 hull (like SPX).
Disabling DESS:
In the Keys tab, select the Disable button. A box will warn you that you are about to perform a
risky operation.
Simply select Yes, and the write the information to the MPEM by selecting Vehicle and Write
Vehicle.