Are you sure you have a 3.3L? The fuel line to the throttle body you referred to was used on the older 4-cylinder engines with throttle body injection. There is no fuel line hooked to the throttle body on the 3.3L engine. You have six individual injectors. The fuel rail runs over the top of them, three in front and three in back. The front part of the fuel rail has the pressure test port on it. The port looks like a tire valve, but it will have a black plastic cap screwed onto it.
Chrysler makes reading diagnostic fault codes yourself easier than any other manufacturer. You don't need a scanner or code reader. Cycle the ignition switch from "off" to "run" three times within five seconds without cranking the engine, leave it in "run", then watch the code numbers show up in the odometer display.
Sunday, January 18th, 2015 AT 12:30 PM