"THE BUTTON" (A0) engine start defeat

[coachgeo]

all's good for me. (for now) but another's plight made me wonder....... if you have an unknown truck delivered to you (or someone wanted to help and messed around in the Power Distribution Panel) and said truck ends up one with a no start senario (tries; but no go) there is lots of things to check...... but how do you check to see if "THE BUTTON" has not been pushed; beyond the... push it again to see if it will start? IMHO that sets up a confusing..... break in the chain of chasing gremlins cause it could be it is pushed AND something else would have caused no start anyway.

can you measure power getting/not getting to something that will show button has been pushed thut she is in the defeat mode? If recall right this button cuts power to a fuel solenoid? If so where is that so can determine if it is getting voltage or not.

UPDATE- saw a post elsewhere that the button resets back to normal start mode with the next cycle of the dash power switch. Can anyone verify this?

 

[319cssb]

...

 

[Floridianson]

Believe you have to hold it in while cranking if you want a no start.

 

[Ronmar]

You turn the main switch on and press the start inhibit button once. This sets a latching relay(you can hear it click) and the vehicle will crank but not start untill you turn off the main switch, which releases the latched start inhibit relay...

 

[Coffey1]

Start inhibit shuts power off to fuel solenoid.
Master switch recycles it back on.

 

[Coffey1]

Put the wrong relay in and does same thing.
No power to fuel solenoid.