Adjusting speedometer with Forscan

[jcwhidby]

The speedometer in my 2007 Ranger is reading about 5% high. I would like to use Forscan to make the necessary adjustment through the PCM but I can't find the applicable field that will allow me to make the adjustment. Does anyone know where to find it? I’m new to Forscan so it's very likely I am doing something wrong... Thanks.

 

[sgtsandman]

The speedometer in my 2007 Ranger is reading about 5% high. I would like to use Forscan to make the necessary adjustment through the PCM but I can't find the applicable field that will allow me to make the adjustment. Does anyone know where to find it? I’m new to Forscan so it's very likely I am doing something wrong... Thanks.

Supposedly, the dealerships can do it. There is no way to do it that anyone has published with Forscan. I've dug and dug trying to find something for my 2011.

 

[Roert42]

The pcm / ecu is what controls the Speedo.

FORScan can not communicate with the pcm on these vehicles, that functionality has never been developed.