Oil Level Sensor NO GROUND

98gtp3800sc

My Haynes manual tells me the black wire with the white stripe on the Oil Level Sensor physically goes to vehicle ground. Mine shows open to ground from both the connector and bare wire behind the connector I stripped back.

Can anyone tell me the actual physical location of this ground? I have pulled apart wire bundles physically tracing it and it bypasses the PCM and routes back over the radiator, and so could come out anywhere. I have ohmed through every BLK/WHT wire I can find in the engine bay, including the fuse block but I suspect this wire is broken, so if I found the other end of it I wouldn't know it.

The BLK/WHT wire on the ign ctrl module appears to share this physical ground, but tracing from that direction is going to be hard because it is routed around the front end of the left valve cover with a heavy bracket covering it up. There is a BLK/WHT ground wire in the same vicinity on an intake manifold bolt, but it appears to route in the same general direction as the ICM but it is outside the sheath and I can't tell where it goes. It's a very tight fit. BUT the ground on the ICM is fine.

Finally, this ground is also shared by the transaxle range switch, which is also not working right.

I have spent weeks on this. Is there anyone out there that can help?

I know there is a ground wire that bolts down under the ICM bracket near the belts. You have to remove a few things to get at it, but if my memory servers me correctly, it is black with a white stripe.

Thanks, I had found that ground. Had to remove the motor mount to get to the wiring harness and that wire traces directly to the ICM which is working fine.

ISSUED CLOSED. This was resolved on another thread and ended up being that some jackass installed the wrong engine fuse panel on the car. Go figure.