starting problem no power on pin 12

[Dodo]

hey ive got a problem with my car, it wont start and a friend of mine diagnosts a bad mpi relay so i replaced it with a custom made relay but now ive got no power on pin 12 from the ecu (ign power) ok so i thought maybe i did some wrong with the wiring and tried to plug in the old one but now even with the old one ive got no power on pin12...
i checked every fuse in my box and at the kick pannel but everything seems fine. so any ideas in this? sorry for my bad english its not my native language :-S

 

[907dirtybird]

I know you said you checked them all, but if your MPI relay is not getting any power, then you could go back from there, which is the 20 amp fuse labeled "engine" in the fuse box under the hood. That thing runs the relay and pretty much every other sensor on your engine. If the fuse is in fact good, check the wiring from the fuse box also to make sure something isnt just disconnected.

 

[SpdMongrel]

Is this a 1G?

 

[luv2rallye]

Check if pin 38 is being pulled low (<0.5v). Also make so the engine compartment fuse "room lamp" tests good (bottom row, 2nd from left).