I have a code po201. The number one injector is staying open. on 2004 Chrysler Pacifica

I have switched injectors and still stuck open. Tested the wire harness on all injectors with DVOM. #1 harness is showing 14volts with key on, the others show zero volts. Is this most likely a bad PCM or ASD, or could it be bad wire somewhere. What is the easiest way to find out if the PCM is bad?

Asked by for the 2004 Chrysler Pacifica