2005 Ski-Doo RT Series Shop Manual, Page 170Get this manual
Section 04 ENGINE MANAGEMENT (SDI) Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
Voltage Test WARNING
When disconnecting coil from spark plug, always disconnect coil from main harness firstNever check for engine ignition spark from an open coil andor spark plug in the engine compartment as spark may cause fuel vapor to igniteDisconnect the plug connector from the ignition coil and check the voltage supplied by the battery
Resistance Test
Remove spark plug cables from ignition coilUsing multimeter, check the resistance of primary windingNOTE: The secondary winding can not be measured with an ohmmeterTry new double ignition coil if necessary1 2
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