2003 John Deere 230 lc will not start back up after shut down, injection pump code present, hold or pull circuit?

Fired up the excavator find the other day and ran it for a couple minutes and shut it down went back to fire it up a couple minutes later and it turns over fine but does not fire there is no smoke coming out the tailpipe batteries are new and it never had a problem firing, never had a long crank, there was a code for an injection pump circuit for either the pull or hold for fuel shutoff, a guy was helping me said no power on the pull or hold circuit at the connector at the pump, any help on where to check or diagrams, I heard there are some diodes in cab behind the seat but nothing is labeled