2003 Ski-Doo ZX Series Factory Shop Manual, Page 193Get this manual
Section 04 ENGINE Subsection 10 (CARBURETOR AND FUEL PUMP)
Solenoid and MPEM
Static Test Unplug electric connector of solenoid no 21 and connect it to 12 batteryThe solenoid must sound when it opensOtherwise, replace solenoidRepeat test several timesDynamic Test Air temperature sensor must be at 20C (68)For the test, operate the engine at the RPM specified in the following chartMODEL MX 500 Legend 500 Grand Touring 500 MX 600600 HO Legend 600 Grand Touring 600 Summit 600 HO800 HO MX 700800 Legend 700 Grand Touring 700 Summit 700 TEST RPM 3000