2003 Ski-Doo REV Series Factory Shop Manual, Page 226Get this manual
Section 06 ELECTRICAL Subsection 06 (TESTING PROCEDURE)
1SPARKING
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 again
2ELECTRICAL CONNECTOR TESTING
Make sure that none of the connectors are disconnected
DESS Switch Wire Check continuity (null resistance) between switch center terminal and WHITEGRAY wire connectorCheck continuity (null resistance) between switch side ring and BLACKGREEN wire connectorIf readings do not correspond to the above mentioned indications, replace switchIf none of these verifications are conclusive, the problem finds its source in the main wiring harnessProceed as follows: Engine Cut-Out Switch Unplug switch block connected to main wiring harnessCheck using multimeter by connecting probes to appropriate wiresRefer to corresponding IGNITION AND ELECTRICAL SYSTEM TESTING table in this subsectionThe multimeter should indicate an open circuit (0.Lin operating position and if the circuit is closed (0in off positionNOTE: For the next step, no switch must be connected to the main wiring harnessDisconnect 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 necessary