Scotty McScott

G'day lads,

I'm troubleshooting a fuel issue and I've narrowed a lack of voltage between the relay and the Inertia Fuel Shutoff switch. On the wiring diagram there is a splice S139 and the location is given as:

"Engine control sensor harness, in T/O to C158"

Would anyone know what "T/O" is? Or the exact location of the splice?

Thanks!
Scotty

Jbrew

User started another thread vs continuing the original, same problem.

Here's the original, -

https://www.f150forum.com/f6/1998-4-...ng-low-362999/

akdoggie

T/O means take out.

Have you thought of trying to bypass the inertia switch and see if that is your problem?

Why didn't you just post this to your original post?

akdoggie

S139 and C158(M) are part of the main wiring or is attached to the main 12a581 (base #) harness. The t/o goes to the computer (PCM).

There is a second C158(F) that goes to the main under dash wiring harness. That goes into the 14401, in dash wiring harness.