2002 Polaris Freedom, Virage, Genesis PWC Service Manual, Page 314Get this manual
Fuel Injection System Ficht Fuel Injection SystemAction StepsFuel SystemFuel Injectors
NOTE: Remember these important facts regarding the fuel injectors: During cranking, Vdc should "stepup" from 12V, to 22VIf this does not occur, check the stator andor EMM regulatorrectifierDuring normal operation, each injector should receive 3945VdcFurthermore, ANY WRED wire in the electrical system should show 3945 VdcIf voltage is either too high or too low, check stator output and resistance along with the EMM regulatorrectifierUse an inductive timing light on each injector lead to verify operation during cranking and normal operationAlways check the wiring harnesses for shorts, loose wires, loose pins, and pinched wiresIf voltage to other injector(s) increases during cranking when one injector is disconnected from the harness, test the stator for output and resistance along with the EMM regulatorrectifierA "hotter" than average fuel injector may indicate that its circuit is shorted outSymptoms of this include: fouled spark plugs and richrunability problemsTEMPORARILY swapping injectors from one cylinder to another may reveal circuit failuresAlways verify, using the diagnostic software, that the serial numbers encoded on the EMM match that of each injectorAn audible "clicking" sound should be heard when testing injectors using the diagnostic software