Yes,i agree i know nothing about mazdas either thats why i am seeking help,and yes i do believe it has the sensor on the throttle body.Yet the plus i am talking about is connected to the fuel rail.Harness is fine.

This is what it does

Power seatbelts-arent working
Wont go into gear
Idles at 500 ands weezes every so often
Theres this button on the gear shift knob called hold,which when pressed it raises your rpm to give you more torque for say hill climbing,well that flickers and makes the rpms flicker also

well i have work today untill 10 but here are some pictures



this is where it starts


i followed it and it travles through a plastic tube which i belive it is just a ground for all the injectors,yes a ground for sure.