VSS and Transmission Output speed

[Jon Fedock]

Hmmm....Just a guess here, but maybe a 4-wheel drive? One sensor in Transfer
case and one in tranny...That way it could know if it was in 4-low?
Jon

-----Original Message-----
From: Bruce Plecan <nacelp at bright.net>
To: DIY_EFI <DIY_EFI at efi332.eng.ohio-state.edu>
Date: Saturday, February 27, 1999 9:08 AM
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
|
|