Start-up cycle for KOEO?

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When I place the key to the RUN position... what cycle is the truck going through to prepare to start? If anybody has any specifics, I would appreciate them. ...What does the PCM energize itself and what simply is relayed to the ignition? In what order are these things done?

If the PCM fails in this start-up sequence ... would that prevent the fuel pump from running? The glow plug relay from switching? The CEL from clearing?

What should I suspect if the Water in Fuel indicator never comes on (and clears), the Glow Plug light stays on, the CEL stays on, the fuel pump never runs, and a code reader cannot connect?

And then sometimes, the truck goes through a normal starting sequence and will continue to run forever once its actually running.