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Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.In order to bebale to be able to try and help you we need to know the engine size you are working on as well as the model. Post back with this information and we can work from there.
Have you checked to see if you have power at the injector as well as injector pulse while cranking?
You want to start first at the injectors, take a standard 12 volt test light and place the test end on the power side of the injector and the ground end on the other side of the connector and crank the engine over. If you have pulse the light will flash while cranking/
No problem, Im here all day, post back if need be.
That would keep the injector from firing, one side should have power and the other side gets its ground switching signal from the computer. The computer as well as the injectors get the power from the EFI main relay and through the 7.5 amp Ign fuse located in the under hood fuse panel. See the wiring diagram in the link below to check the circuit. Copy and paste the link to your browser to open the link.https://dl.dropboxusercontent.com/u/104923897/EFI%20diagram%20Dec%204.pdf
You need to start at the relay and see if you have key on power out of it on the black/yellow wire to the Ign fuse and out of the fuse on the brown/red wire to the injectors just like shown in the wiring diagram.
The brown /yellow wire come from the ignition fuse, do you have power in and out of it?
No there are two fuse, the Ign and the ECM and there in the fuse box and the box should be marked.
Im not sure what to tell you, It should be marked.
Looking at the diagrams it looks like they may also be in line , see if you can trace the brown/yellow wire to the fuse. Take a look at the wiring diagram .
Your going to need to take a close look at the wiring diagram and trace the source down, it could very well be a connection issue and is going to require some hands on checking.