Bombardier SeaDoo 2007 factory shop manual, Page 192Get this manual
Section 04 ENGINE MANAGEMENT (I 503 4-TEC) Subsection 02 (EMS DIAGNOSTIC AND COMM UNlCATtON TOOLS)
Supplemental Information for Some Specific Faults
Communication link fault code 1681: Sometimes the information center does not synchronize fast enough for the MPEMThat brings this fault codeSimply clear the fault and try againECM fault codes P0601, P0602, PO604 and P605: These codes may occur in the following situatons:Electrical noise is picked up by the ECMEnsure that all connections are in good condition, also grounds (battery! ECMr engine and ignition system), they are clean and well tightened and that all electronic components are genuine particularly in the ignition systemInstalling resistive caps! non-resistive spark plugs or improper knock sensor wiringrouting may lead to generate this fault code- Electrical noise might also lead engine occasional cutout without generating fault code when engine is restarledWhen looking the fault code! pay attention to the "countrfvalue in the software B.U.D.SA value between and confirms an electrical noise problemA value of I0 and above will generate fault code- When installing new ECMIt is not properly programmed from the factoryThe ECM must be returned to be properly "activatedIf everything is n good condition, try ECMFault code P1513: Wrong ECM or information centerInstalled part is not appropriate for the vehicleEngine will crank but will not startRefer to parts catalogs for proper part according to vehicleI t