Nissan Frontier problem

Greetings Friends of the mechanical community, I have a problem with a Nissan Frontier was V6 4.0 lts 2009, this truck was changed to the heads of the heads but it has a failure and turns on and off the check Engine, Scanee and the code P0300 Multi cylinder appeared I Coil elsewhere and if he worked well, I put another coil in the 2nd cylinder and does the same does not work, I checked pulsations of the coil in its harness and the light is fixed not flambo It began to fail more and another 2 more coils began with the same problem, I separate the spark plug coil and there is no sparkle towards the spark plug, the coils that do not work are from cylinder 2 and 3 on the battery side and the 1st coil on the driver's side, someone knows if this engine brings a sensor that controls the spark of the coils? I would appreciate this problem in advance.

You should have a superior dead point sensor or camshaft position, but check if you have a module of teaching that there could also come the failure also

Hello good afternoon, my first advice, you must get the electrical scheme of the truck, be very careful when performing tests where you release some component, do not bridge anything if it is not known for sure that it is already where it goes. If you get the diagram we understand it together.} Greetings.

Dear colleague your problem occurs when the m
is granted is hot or cold,

Greetings friends and I apologize for responding just, with the truck everything was like this: this truck over-heated and took her to her mechanic dragging because she no longer lit, they changed the boards of the heads and when giving her she started with the problem and took me to correct the problem, the truck when giving her marches fast, it is only the problem that there are 3 coils that do not work. Injectors if there are pulsations, and in the battery side coils only work the 1 and receives their pulsations and coils 2 and 3 do not work because they do not receive pulsations, and from the driver's side only coils 5 and 6 work, and coil 4 does not work since it does not receive pulsations, the problem is presented both in cold and hot, my doubt is if the problem could be the problem. Cylinders could be that they forced the engine and overcome it and if it was so the client will never say anything for not knowing.