2005 Ski-Doo RT Series Shop Manual, Page 166Get this manual
Section 04 ENGINE MANAGEMENT (SDI) Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
If out of specification, replace the sensorIf resistance tests good, reconnect the ATS and disconnect the connector on the ECMUsing multimeter, recheck resistance value between terminals and 21If resistance value is correct, try new ECMRefer to ENGINE CONTROL MODULE (ECM) in this sectionIf resistance value is incorrect, repair the connectors or replace the wiring harness between ECM connector and the ATS
A32C9WA
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)
The resistance between terminal and is used for temperature gaugeRefer 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 sensorThe resistance between terminal and is used for the ECMRefer 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 CTS and disconnect the connector on the ECM as well as the enginevehicle connector