2003 Kawasaki 1100 STX D.I. Jet Ski Factory Service Manual, Page 109Get this manual
3-64 FUEL SYSTEM (DFI) Injector (Service Code 51, 52, 53)
Injector Supply Voltage Inspection NOTE
Be sure the battery is fully charged
Check the injector supply voltage at the injector connector [A]Disconnect the connector at the injectorMeasure the power source voltage with the engine stopped, and the connector disconnected, using digital meter [B] and the needle adapter set [C]Special Tool Needle Adapter Set: 570011457
Crank or run the engineInjector Supply Connections Meter (+) Meter () Voltage at Injector to injector #1, #2, #3 BKR lead [D] Battery () Terminal [E]
Injector Supply Voltage at Injector Connector Standard: Cranking Approx20 Running Approx45 V