If there is still a desire to crank the engine from the engine compartment, bridging the starter relay terminals will do it. (I assume that the Civic has a starter motor relay and that it's in the engine compartment.)
On most relays the pin numbers are moulded into the relay body, adjacent to the male terminals on the relay. With the relay removed, you want to jumper the female terminals corresponding to pins 87 and 30 together, using a short length of insulated wire with bared ends.
The earlier warnings about in gear and disabling the engine (injector plug removal) apply.
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