2001 Nissan sentra NO spark on cylinder 2 and 4 part1

Running on 3 cylinder 1,2,4 also owner had disconnected number 3.from coil. But sides a head gasket failure. Which now has been replaced. But no starting, and no spark on cylinder 1 and 3

[@aaronbalai2363]

I put in a new ecm but still no spark can u tell me what’s wrong

[@keving.4703]

cyclinder 1 Ignition coil isn't getting any sparks , the spark plugs are good help

[@c14back2nitrogen9]

Sorry this was my old channel i forgot my password.. Hope to help ..
Fist check fuses.
Then coil connector should have 12v on green wire.
And a ground. Wire
And signal wire ..