the power locks for my back doors dont work, i have to pull up and push down manually, anyone know the prob?

 

check your fuses
or see if the child lock is on

 

Check the micro switch in the drivers door switch. Mazda is famous for this switch no making contact with the door lock cyclinder.

 

how would i get to this switch?

 

There is a Black Fuse/Control unit. A small harness plugs into it. Its like a swtich box. Its located under the drivers side, behind the dash. If you lay down on the ground of the car and stick ur head up a lil bit under the dash, you will be able to see the small black boxes. There is like 2 black ones, grey one and i think a white one.
The gray one is the box u need to replace. (If they are the same as the first gens). Like $20 from dealer + tax or like $2 at a junk yard. FInd a friend with a pro and swap his parts on urs to see what is broke. THats what i did with my friends pro.