2004 Ski-Doo REV Series Factory Service Manual, Page 216Get this manual
Section 05 2TEC ENGINE MANAGEMENT Subsection 02 (COMPONENT INSPECTION 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 WTS and disconnect the connector on the ECM as well as the engine connector
Refer to TEMPERATURE SENSOR TABLE at the beginning of this section to find the corresponding resistance value for this sensor temperatureIf resistance value is correct, try new ECMRefer to ECM REPLACEMENT procedures elsewhere in this sectionNOTE: Check if wiring harness shows any signs of scoring prior to replace the ECMIf resistance value is incorrect, repair the connectors or replace the wiring harness between ECM connector and the CTS
Replacement
Drain cooling systemDisconnect CTS connector and remove CTSInstall the new CTS and torque to 12 Nm (106 lbfin)Reinstall remaining removed partsRefill engine coolant and bleed cooling systemRefer to LIQUID COOLING SYSTEM sectionA32C9IC