2004 Ski-Doo Elite Factory Service Manual, Page 213Get this manual
Section 05 ENGINE MANAGEMENT Subsection 02 (COMPONENT INSPECTION AND ADJUSTMENT)
If wiring harness is defective, repair the connector or replace the wiring harness between ECM ECU connector and the ignition coilIf wiring harness is good, test resistance of primary and secondary winding of ignition coil
WARNING
Always reconnect ignition coil cables at the same spark plugs where they come fromOtherwise, severe backfire may occur with possible damage to exhaust system componentsThe genuine wiring harness is designed to prevent cable mixing by using different cable lengths
Resistance Test
CAUTION: Do not remove the ignition coil before disconnecting the connector, or the wires will be damagedDo not pry up ignition coil with screwdriver to avoid damageRemove ignition coil from spark plug1 1
TDC SETTING (TOP DEAD CENTER)
The ECM is able to determine the exact position of camshaft and crankshaftThat means that no TDC setting has to be performedIt is used for both injection and ignition timings