No bus, will not start

Just to be sure, you are wiggling the connectors for the PCM and the engine starts? If this is the case then you are touching the issue. You have a connection issue with one of the PCM connectors. The trick now is to try and limit it down to one of them. The way to do this is to wiggle them one at a time very gently to see which one gets it to shut off or start again depending on what the current state of the vehicle is.

Below are the PCM connector views which we will need to find the specific circuit once we know what connector it is.

The other solution is to replace the connectors but this is a lot of cutting and soldering wires so it would be best to try and limit it down.

Let me know if you have questions. Thanks