Ford Repair Questions? Ask a Mechanic for Answers ASAP
The fuel pump is controlled by the fuel pump relay through ground switch from the PCM (computer) .If you take your 12 volt test light and or volt meter do you have key on power at the FP relay on pins 86 and 30?
Check the two power pins first to be sure you have key on voltage to them with the black power probe on ground and the red probe on the pins at the connector and if so then see if you have battery voltage out of the relay while cranking the engine over on the dark green /yellow (pin 87) wire that feed the pump circuit. Also try jumping pin 30 to pin 87 (green/yellow) and see if the pump will now run.
Okay you need 12 volts while cranking at the inertia switch and if the pump runs with the pins jumped then I have to suspect the PCM is not grounding the relay on the orange/blue wire at the relay, if you supply a ground to the relay on pin 85 does the pump run and will it start?
Thew relay needs to be in place to complete the circuit, was that the case?
If the pump runs with pin 30 and 87 jumped then the circuit from the relay to the pump is fine, will the engine start with the pump running?
The fact that the fuel pump will only run when you supply a ground points towards a failed computer since the computer controls ground switch to the relay but if the engine will still not start with the pump running that means you likely do not have injector pulse as well. Have you checked to see if you are lacking injector pulse as well? If you are lacking injector pulse you could very will be dealing with a PATs concern as well.
The injector pulse can be checked with a standard 12 volt test light by placing the test end in to the power side of the injector connector and the ground end on the other wire at the injector connector and then cranking the engine over. If you have pulse then the light should flash with cranking the engine over.
No you need a test light to watch the flash. I suspect you are going to find you have no pulse and if the scanner will not communicate with the PCM and there is no injector pulse and or fuel pump operation you are likely going to find you have either a failed computer and you you do not have power to it. I have enclosed the steps in the link below to check the power supply to the PCM as well. Copy and paste the link to your browser to open and view the steps.https://dl.dropboxusercontent.com/u/104923897/Scanner%20com%20AUg%2014.pdf
Okay good luck.
No the injector stay connected and you need to check the signal while cranking the engine. Power and ground are checked with the steps I sent you.
No, you have already proved the fuel pump circuit is okay from the relay to the pump , your just not getting a ground from the PCM , remove any add on wiring and test the injector as I instructed you to.
Well did you ever check for injector pulse?
That would indicate you do not have injector pulse and if the fuel pump will not run and with no injector pulse and no ability to communicate with the PCM, I am at a point where I can not fix this for you online. At this point you are going to need some hands on testing which unfortunately I can not do from here.
Okay, hope fully that the problem and not just the key have lost there programming. Replacing it will tell either way.
No, the list I sent you is the correct list , its not like you have bent pins if the connector was installed correctly.