There is no interconnection between the parts you describe, other than all attatching to various internal parts of the ECU. Some of the parts send signals to the ECU, others have signals sent to them by the ECU.

It is NOT wired up anything like a normal points and coil system, so try not to think of it in that way. It uses different input signals, ie. mass airflow sensor, throttle position sensor,cam and/or crank position sensor, engine coolant temperature, plus others) to go to the input of the ECU that does its mathematical operations on all the data, and sends signals to the coils, injectors, idle air control (and a few other bits), according to a set program stores within the ECU. Obviously similar problems to a normal points and coil system can occur with an EFI system, but you cannot manually jumper "this" to "that" to fix anything, the computers generate an error code that you can get read from Autozone in 49 states (ex CA) for free that will disclose a lot of what is happening. Come back to us with those codes and we should be able to steer you in the right direction.

Main issues that occur are with the electrical connections along the inlet manifold. Unplug each of them (from the right, MAF, TPS, and IAC) and spray some WD40 (water dispersant spray) into the connectors and reconnect them, do this every 3-6 months and you shouldn't have too much hassle with them (and I've seriously drowned mine three times, over the hood, no issues so far).