There must be some way to diagnose an engine problem. Are you sure there is no conn port to the ECM? If not you might have to construct some kind of breakout box that conn. between the ECM and the wiring harness. What type of ECM do you have? Do you also have a electronic tranmission or is it the old manual valve body type? Good luck. I may be able to ask my buddy in Begium to see if the models are of similar origin.