silverbulletAWD
15+ Year Contributor
- 126
- 0
- Aug 3, 2003
-
Holland,
Michigan
I could use some help here guys. I've got a car here that will crank over but there seems to be no power to the ECU. No spark, no injector pulse. I'm getting the switched power through the MPI relay. And on the plug into the ECU I'm getting power to what the diagram calls the 'Power Backup" and the "MPI relay". What I'm not getting is power to pins 102 and 107 which are both labeled "Power Supply" I dont get it at any key position and I can't seem to find the source of this power yet either. I checked the MPI fuse off the battery but that looks like the same color wire as the "Power Backup" and for that matter the fuse is fine.
Does anybody know where the power source for the two dead pins comes from so I can trace it or when or if or how those are supposed to get power? Or if it's safe to try to jump power into them? Any other ideas or common experiences? I'm pulling my hair out at this point.
Thanks,
Andy Prins
Does anybody know where the power source for the two dead pins comes from so I can trace it or when or if or how those are supposed to get power? Or if it's safe to try to jump power into them? Any other ideas or common experiences? I'm pulling my hair out at this point.
Thanks,
Andy Prins