2005 Ski-Doo REV Series Shop Manual, Page 284Get this manual
Section 06 ENGINE MANAGEMENT (SDI) Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
If resistance value is incorrect, repair the connectors or replace the wiring harness between ECM connector and the ATS
Replacement
Unplug ATS connectorPull the ATS out of the air intake silencerSpray soapy water on grommetInstall grommet on air intake silencer then push the sensor in placeReconnect it
COOLANT TEMPERATURE SENSOR (CTS)
Resistance Test
Disconnect the plug connector from the CTS and check the resistance of the sensor itselfA32C9IC
ENGINE CONNECTOR