2007 volvo with cummins cm870

[ktblogistics]

i hit ecm top slightly and nothing happens
what happened is i disconnected abs module and reconnected it and later was not able to
start the truck
checked voltage on fuel shutoff valve and was none,
next day truck started
i read once on this forum about power surge on the truck that might disconnect the ecm for 15 mins
will try to inspect more points for ground and power supply on ecm
checked fuses on batteries already and found one splice on ecm power/ground lines
thanks for the help