2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 308Get this manual
Section 05 ENGINE MANAGEMENT (2-TEC) Subsection 03 (COMPONENT INSPECTION AND ADJUSTMENT)
Resistance Test
Disconnect the plug connector from the EGTS and check sensor resistanceRefer 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
Using the vehicle communication kit (VCK) with the B.U.D.Ssoftware, monitor the knock sensor using the Faults sectionStart 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 from the ECM and check continuity of circuit as per following table