Will the car s ECU will fail due to the lose connection in distributor to spark plugs?

I cleaned the spark plug wires that cones out from the ECU and cleaned them. Once I connected the wires back and start the engine, I noticed that the engine is rough on idle and suddenly engine turned off. So I again checked the wires that I cleaned earlier. Turned out that 1 and 4 spark plug wires were not connected properly. So I reconnected them and tried to start the engine, but its only cracking. Further checking, I found that I am not getting any spark from the spark plugs. I am worried about ECU, so any advice is appreciated. My car is Honda City 2001 Manual.

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