No start on 91 Chrysler Imperial?

For some reason the car doesnt want to start. Checked spark...its fine. I checked the fuel at the check valve with the button on it pressed down. While cranking the car, no fuel spit out of it. There is no fuel smell coming out the exhaust after cranking numberous times. After changing the fuel filter, it hiccuped a couple times while cranking. But still continues with the no start situation. I put my hand under the gas tank when my bro turned the key and I can't feel the time fuel pump turn on. I doesn't make a buzzing noise either. But when the key is turned the fuel pump relay clicks so its not a faulty relay. I found what looks like a diagnostic connector under the hood with a single wire diagnostic port near the main relay box. Is there a way to check for other codes via this connector(s)? I checked the engine codes via the key ON-OFF-ON procedure but only pops up a code 12. Could I possibly have a bad fuel pump? I havent borrowed a fuel pressure gauge yet. But I am thinking about getting one. Thanks!