2004 Ski-Doo REV Series Factory Service Manual, Page 217Get this manual
Section 05 2TEC ENGINE MANAGEMENT Subsection 02 (COMPONENT INSPECTION AND ADJUSTMENT)
Install the tether cord cap, turn OFF engine cut-out switch and push STARTRER button momentarily to activate the ECMDisconnect plug connector from APS and connect voltmeter between pin and of wiring harnessVoltage should be VCheck the continuity between pin on APS connector and pin 18 on ECM connectorIf tests are good, replace the APSIf tests are not good, continue to check the continuity of the rest of the APS circuit on the harnessDisconnect the connector from the ECMUsing multimeter, check continuity of circuits as per following tableCIRCUIT NUMBER (ECM CONNECTOR DA) DA-3 DA-4 DA-18 APS CONNECTOR PIN PIN PIN 3
EXHAUST GAS TEMPERATURE SENSOR (EGTS)
A33I0JA
1Muffler 2Exhaust gas temperature sensor (EGTS)