2004 Ski-Doo Elite Factory Service Manual, Page 211Get this manual
Section 05 ENGINE MANAGEMENT Subsection 02 (COMPONENT INSPECTION AND ADJUSTMENT)
To check the function of the OSPS (oil separator pressure sensor), disconnect the TOPS resistance and perform pressure test as followsRemove oil dipstick from engineUsing appropriate tubes, install the engine leak test pump (PN 529 021 800) on dipstick tubeEnsure to have tight fitStart engineSpray soapy water on the tubes from the pump to the dipstick tube to ensure there is no leakIf so, correct the leak before measuring the pressure
Disconnect the ECM ECU connector from the ECM ECU and check continuity of circuit 31
WARNING
Stop the engine and wait at least 30 seconds before removing the pump and tubes, so that pressure dropsOtherwise, check the resistance of the OSPS while engine is off and while engine is running
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