1G Main relay wont turn off

[1gcrazy]

So my main relay isn't turning off when the key is out.

I'm getting power to pins: 7 (4.5v), 10 (12v) and 3 (4.5v) Something doesn't seem right. I've tried two different main relays and it still happening. It's bad enough to drain my battery QUICKLY.

I have the factory service manual for a 92. It's a 93 TSI AWD. Manual says that the ignition switch (pin 3) should have power when the ignition switch is on. Then the fusible link, constant 12v (pin 10). Then an inhibitor switch from pin 9 but the car was converted from auto to manual a while back so the inhibitor switch is only for auto's from what I understand. Not sure what it does though.

The wiring "expert" I just had to fight to get my car back from told me prior to the fighting that the wiring harness is not the right one for the car. I'm thinking, well, they're all pretty much the same. wtf.

Pin 110 has power at the ECU which is the Key switch...

 

[luv2rallye]

ECU pin 110 should only have power when key is in Start position.
What is your MPI relay pin 9 now connected to? It makes a difference. For MT it should now go to starter relay and ECU pin 108 (AT was Inhibiter Switch and ECU pin 108).

 

[1gcrazy]

I'll check it out when I get home. The car used to have a remote start on it as well...

 

[lotta hp]

I had the same issue and it ended up being the ECU.