View Single Post
Old 03-06-2004, 12:39 PM   #18
Hawk296
Scooby Specialist
 
Member#: 14555
Join Date: Jan 2002
Chapter/Region: MWSOC
Location: MI
Vehicle:
1995 Impreza L
Baja

Default

With the relay unplugged, there is no continuity between any of the pins ecept the the Light green wire that connects the ECU to the coil and the ground for the coil which is directly across from it. So there is no continuity except for across the coil.

with the relay powered to the closed position, there is continuity between the two pins that normally are connected to B+ and their respective pins. This to me indiactes that the relay is operating correctly with no internal shorts.

I also got a jumper wire and 12V and put 12V to the two pins that are normally hot from the battery and grounded the other two. Then added 12V to the coil to make it switch (thinking that once it was switching it was shorting internally to the coil keeping it powered) but as soon as I removed the 12V from the coil it disconnected and opened up.

So overall I tested the relay just about everyway i knew how and it passed all my tests. I even connected the relay to the harness via jumper wires one at a time and everything works fine UNTIL the dark green wire is attached. Everything but this green wire can be attached and it switches on and off fine. As soon as the dark green wire is attached it will switch on and get stuck on.

This dark green wire is the one that runs from the relay to the MAF and to power the injectors. That is what led me to try and disconnect that side of the engine harness from everything else discovering that once its disconnected it works. From there we disconnected every component and tested continuity as mentioned above.

I am going to take everything off, fab up a manifold, and switch to a carburator and distributer. haha.
* Registered users of the site do not see these ads.
Hawk296 is offline   Reply With Quote