24000 ppm VSS?

[Bruce Plecan]

-----Original Message-----
From: Ludis Langens <ludis at cruzers.com>
To: Diy_efi <diy_efi at esl.eng.ohio-state.edu>
Date: Sunday, January 17, 1999 12:16 AM
Subject: 24000 ppm VSS?


>I've come across a PROM which appears to expect a 24000 pulse-per-mile
>VSS.  Its the ANAM1667 used in the 1227748 ECM.  This PROM configures a
>VSS interface chip to perform an extra "divide-by-6".  Other PROMs for
>this ECM set it to "divide-by-1" mode.  The ANAM PROM also has an extra
>factor of six in the VSS to vehicle speed calculation code (which gets
>the VSS signal before the hardware divide).
>
>Could this PROM be for a reluctor type VSS?  I should have kept track of
>what type of car it came out of.

It's out of a 88 2.5L Vin R application. TSB P0233  
That all I got on it
Cheers
Bruce
>
>-- 
>Ludis Langens                               ludis (at) cruzers (dot) com
>Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
>
>