2003 Ski-Doo REV Series Factory Shop Manual, Page 95Get this manual
Section 03 TROUBLESHOOTING Subsection 05 (ELECTRICAL SYSTEM)
SYMPTOM CONDITION TESTINSPECTION
NO ELECTRICAL ACCESSORIES WORK WHEN ENGINE IS ON IDLENORMAL USE1Check idle speedaToo low idle speedReadjust to specifications2Verify regulatoraFaulty regulatorReplace3Check accessory relayaRelay contact does not close above 800 RPM because of defective wiring harness between MPEM and relayRepairbRelay contact does not close above 800 RPM because no signal is emitted by MPEM to activate the relayReplace MPEMcRelay found defective after testing it with 12V batteryReplace relay