Date:         Sat, 13 Oct 2001 19:03:28 -0500
Reply-To:     Larry Alofs <lalofs@ENTERACT.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Larry Alofs <lalofs@ENTERACT.COM>
Subject:      Re: Low Power woes...
Comments: To: wayout <wayout@IX.NETCOM.COM>
Content-Type: text/plain; charset=us-ascii

wayout wrote:

> I woke up today and went up to the garage determined to figure out what the
> "real" problem was before I spent any more dough....also before I
>
> I disconnected the multi-pin thing from the brainbox, turned to page 24.20
> in the Bentley and proceeded to poke around with the multitester.
> Everything checked out, except the AFM...
>
> I connected the OHM-meter to terminals 15 and 19 and got this:
>
> Flap closed - 0 ohms
> Flap 1/8 to 1/4 open - rises to 1000 ohms
> Flap open further: descends to 500 ohms
> Flap fully open - 0 ohms
>
> I got the same results when testing the AFM directly (not through the
> multi-pin thing).
>
> Those are wacky readings right?
>
> I cant find actual numbers to check against.
> In the Bentley it just says: "Ohms changing"
> Anyone know what the range of resistance is supposed to be?
>
> Im probably going to have to fork out for a new AFM arent I?
>
> AAaaarrgghh!
>
> Jason L.
> 85GL
> Louisville KY

Don't jump to the wrong misconception.
  It said "ohms changing" and your ohms are changing.  It is hard to test the
AFM with an ohmmeter and get any useful info because it is not a typical
potentiometer.
  The best approach is to connect a D cell to the end terminals (probably 1 & 4
if I remember right), connect your *voltmeter* to one of those pins and to the
slider (pin 2 ?) and watch the voltage as you move the vane.  If the voltage
varies smoothly, without dropping to zero anywhere in the middle, you're
probably OK.

Good luck,
Larry A.