2005 Ski-Doo RT Series Shop Manual, Page 158Get this manual
Section 04 ENGINE MANAGEMENT (SDI) Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
WARNING
Perform fuel high pressure test and ensure that there is no leakRefer to FUEL SYSTEMENGINE CONTROL MODULE (ECM)
General
Prior to replacing suspected ECM, ensure that all the recommendations in the general introduction of this section have been followedIMPORTANT: When the ECM is replaced, the tether cord cap(s) and the Closed Throttle must be reprogrammedresetRefer to their specific section for adjustmentTo allow transferring the previous recorded information from the old ECM to the new one, use the vehicle communication kit (VCK) with the B.U.D.SsoftwareUse Replace ECM in the ECM menuFollow instructions provided by the help systemNOTE: If the old ECM can still communicate, it must be read inside B.U.D.Sprior to removing it from the vehicle to carry vehicle information and history to the new ECM