how do i bypass my security system ?

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the codes are - chech engine , service steering systen , lost siglal from bcm , abs light on and codes po151-po174 and traction control light. and the horn keeps blowing so i took the relay out and switched it with another one , unhooked the battery for an hour reconnected it and still the same thing , i was told it was the security system , how can i fix this problem ? is their a bypass module ? or a wire to do it ? thanks.