2005 Ski-Doo REV Series Shop Manual, Page 293Get this manual
Section 07 ELECTRICAL SYSTEM Subsection 01 (IGNITION SYSTEM)
In most cases when problems are caused by temperature or vibrations, these can only be solved by replacing partsMost problems cannot be detected when the engine is stopped Multiple Problems As matter of fact, more that one component can be defectiveAs result, if the problem remains although part was replaced, start over the whole verification from the beginning in order to identify the other defective component
Disconnect all switches from the main wiring harness and check the continuity of each wire by connecting probes to the end of wires of the same colorRepeat with all other wiresIt is important to mention that all wires of the same color within given harness are connected togetherThese wires should therefore have closed circuitOn the other hand, BLACK and BLACKYELLOW wires must have an open circuit (0.L )Repair or replace if necessaryTether Cut-Out Switch Fan-Cooled Engines
TETHER CUT-OUT SWITCH
Spark Testing
During this operation, it is important to use the snowmobile spark plug and not new oneBring the plug in contact with the enginePull rewind starterIf no spark is produced, replace the spark plug with new one and do the test againFor more information on spark plug condition, refer to SPARK PLUG further in this section