Dano desconhecido Mazda B2600i

Hello friends,
I have a B2600i Mazda in 2007, this weekend I left the problem without problem and when I returned no longer turned on, without apparent problem I stopped working, as I just made the change of the fuel pump I imagine that it returned the problem and when checking it did not work for which I proceeded to lower the tank and take out the pump, when checking it in physical and apart, it is in perfect condition, reviewing the socket Short and a friend told me that it was Possível que o relé tenha sido queimado, acabei de fazer checar e está tudo bem ...
a consulta é onde o dano pode ser ... o que posso verificar ...?
Por favor, se alguém puder me ajudar ..., obrigado antecipadamente ...

SLDS ...
Tavo327