Chart A2-5, Fuel Injector Circuit Check (Engine No-Start): Notes

When solenoid coil of fuel injector is energized by ECM, it will activate fuel injector plunger and pressurized fuel will be injected into throttle body. Fuel pump will operate as long as engine is cranking and ECM is receiving ignition reference pulses. If ECM does not receive reference pulses, fuel pump will stop after 2 seconds.

1. Checks to see if ECM is controlling fuel injector signals.
2. This checks fuel injector for correct resistance.
3. This checks for voltage at fuel injector.
4. This checks for an open or short to ground in Yellow/Black wire, a faulty ECM and a faulty fuel injector.
5. This checks for an open or short to ground in Yellow wire, an open in White/Blue wire, or a faulty fuel injector resistor.