Hey guys hoping to get a bit of insight on this problem I have.
I have a 92 s10 2.5l and I am doing a bit of diagnostics on my Service engine soon light not popping up with the ignition in the run position. When probing all of the ECM ground circuits I run into the issue of D9 and D10 not having ground.
The diagram shows them connected with 151 blk wire but does not tell me where else it leads. Just curious to know if anyone else has some experience with this.
Any help is much appreciated. I know I'm probably just gonna have to probe it all out but still. I'm new to reading electrical diagrams so I'm hoping for the best.