Misfire on Cylinder Number two

Engine threw a misfire code on the second cylinder. I replaced the coil and plug, and the issue persists. I think it might be an ECM issue (I've seen that they can be sent out for repair), but I was hoping to find a PCM wiring diagram so to help me make sure it's not a wiring issue.

In addition to the wiring diagram, any help or suggestions on other things I should be checking would be appreciated.