The speedometer quit working, so I pulled the codes and got a code 15, for no speed sensor signal under road load conditions.

Ok, I crawled underneath to look at the wiring, figuring maybe I'd get lucky and find a loose connector.

I found connectors at sensors at the input side and the output side of the transfer case (it's a 1991 Laredo with the automatic trans).

Which one is the Vehicle Speed Sensor? Or is it elsewhere on the trans?

And what should the resistance be across the pins of a good VSS? I'm not ruling out a wiring problem. But I do need to get this fixed, fast.

Thanks,
Dan

 

the white plug is the speed sensor

 

Ah, Thank You!

Dan