VSS and Transmission Output speed

[Don.F.Broadus at ucm.com]

It could be part of the ABS input.

> -----Original Message-----
> From:	Bruce Plecan [SMTP:nacelp at bright.net]
> Sent:	Saturday, February 27, 1999 8:01 AM
> To:	DIY_EFI
> Subject:	VSS  and  Transmission Output speed
> 
> On a 8625 pcm, there are two connections, one labeled VSS, which is
> vehicle
> speed sensor, and a second one labeled transmission output speed,   they
> both feed from the Vehicle Speed Signal Bufffer to the PCM.  Can anyone
> splain this to me?.  Is this just a way of checking for transmission
> "slippage".
> Anyone happen to know what this 5v signal should be?.  ie square,
> 4,000ppm?.
> Thanks
> Bruce