2003 GT Mustang 4.6L V-8 won't start!
My son has a 2003 GT Mustang with a 4.6L V-8 engine. While driving, his engine just died out, just like sdpony's 2004 Mustang did, and has not started up since. I hooked up my scanner and several codes came up, of which two codes are fuel related. They are: P1233 Fuel pump driver disabled, and P1237 Fuel pump secondary circuit FP. I did some checks, such as checking on the fuses. They are ok, I worked my way up to the Inertia Fuel Shutoff Switch. With the switch in the down position, meaning pressed all the way down, I do have voltage on the wire coming from the Constant Control Relay Module, and I do have voltage on the wire that runs from this Inertia Switch to the Fuel Pump Driver Module. I disconnected the wire connector from the Fuel Pump Driver Module and I was about to do the test that jjandascog has listed in his thread. I'm a bit confused about that procedure. Perhaps I'm misinterpreting what is being said. Are you saying to disconnect the FPDM from the cars body, or from the wire connector? I just need clarification on that. Ok, since I do have voltage at the Inertia Fuel Shutoff Switch, I would assume that the Fuel Pump Relay is working properly, is that correct? Now, I would like to power up the fuel pump manually to see if it works. To do this, I must have the wire connector disconnected from the Fuel Pump Driver Module, correct? I must then run a postive lead from the battery to pin 10 which is the black/pink wire, and a ground lead to pin 3 which is the red/black wire. So, if the fuel pump does work, I should hear it pumping, as if I had turned the ignition switch to the on position, correct? At this point, if I don't hear the fuel pump running, would it be safe to say that the culprit is the fuel pump? If it is the problem, do I have to drop the fuel tank to replace it? How big of a job is it? Thank you for your support.