Pulldown resistors for TPS MAP

[Bruce Plecan]

-----Original Message-----
From: goflo at pacbell.net <goflo at pacbell.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Monday, August 03, 1998 11:31 AM
Subject: Re: Pulldown resistors for TPS MAP


>What signals and signal range do these inputs require? I don't
>know diddley about these ECUs but am interested. Probably can
>tell you how to fake em once I know what's required... Promise
>not to buff anything.

The ecm supplies a 5v signal to the TPS, and MAP.  The MAP is
a strain guage type device with a couple transistors.  What is inside
a TPS, I don't know.  The TPS needs to return a signal from .5v to
4.9v (.5 being idle). to the ecm.  The map at engine off is like
4.9, idle 2.v ish..
Appreciate a hand
Bruce
>
>Regards, Jack
>
>Bruce Plecan wrote:
>> Now, that we know there is pull down resistors, what do I do with
>> the 5K pots that I've been using for TPS and MAP signal inputs?.
>> I'm over my head here so I need a item by item explaination.
>> ie., a lot more specific than saying, buffing the output with an op-amp.
>
>