1999 Ski-Doo Factory Shop Manual Volume Two, Page 81Get this manual
Section 03 TROUBLESHOOTING Subsection 05 (ELECTRICAL SYSTEM)
SYMPTOM CONDITION TestInspection
ENGINES DOES NOT START NO SPARK AT SPARK PLUGAT ENGINE CRANKING1Verify spark plug conditionaDefective, improperly set, worn-out, fouledIdentify source of problem and correctReplace spark plugs2Verify spark plug cap resistance with an ohmmeteraDefective partReplace cap3Verify if problem originated from electrical system wiring harness andor accessories andor ignition cut-out switches by unplugging the 4-wire connectors between the magnetogenerator and the vehicle wiring harnessCheck condition of connectorsaHeating, rotating or sharp part in contact with harnessImproper harness routingDefective switch(es)Corroded connector terminalsReplace or repair damaged wiresReroute where necessaryReplace defective switch(es)Clean terminals and apply silicone dielectric grease4Verify trigger coil resistance with an ohmmeter and connector conditionaDefective coilCorroded connector terminalsReplace defective coilClean terminals and apply silicone dielectric grease5Verify condition of ignition coilaMechanically damaged partVibration problemElectrically damaged partTighten mounting screwsReplace ignition coil6Verify condition of ignition generator coilsaMechanically damaged partVibration problemElectrically damaged partTighten mounting screwsReplace coils7Verify CDI (Capacitor Discharge Ignition) moduleaMechanically damaged partVibration problemElectrically damaged partTighten mounting screwsReplace CDI module, retest and verify ignition timing