2005 Ski-Doo REV Series Shop Manual, Page 286Get this manual
Section 06 ENGINE MANAGEMENT (SDI) Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
Refer to TEMPERATURE SENSOR TABLE at the beginning of this section to find the corresponding resistance value for this sensor temperatureIf out of specification, replace the sensorIf resistance tests good, reconnect the EGTS and disconnect the connector on the ECMUsing multimeter, recheck resistance value between terminals 10 and 26If resistance value is correct, try new ECMRefer to ECM REPLACEMENT procedures elsewhere in this sectionIf resistance value is incorrect, repair the connector or replace the wiring harness between ECM connector and the EGTS
Start the engine and bring engine RPM above 6000 RPMIf no fault code occurs, the knock sensor is goodOtherwise, do the followingEnsure sensor and head contact surfaces are clean and mounting bolt and washer are correct and properly torqued downCheck the knock sensor circuit on wiring harnessDisconnect the connector from knock sensor harnessDisconnect connector form the ECM and check continuity of circuit as per following table