Dead driver on '165? - Fixed

[Bob Valentine]

Nothing like a day or so of thinking about the problem.

Re-read the schematics, the park/neutral line is in park when it's low
(ground) not high, oops but no difference.  I thought about what Scot said
about the driver, did a little looking in a MOSFET book and realized that
it GROUNDS the injectors, not powers them.    I was confused initally
because the B+ wire to the injectors (ckt 839 and 639) is black which in my
mind implied a ground circuit.

Gee, where do the injectors get power FROM?   Pins B & G of C207, which
splits off the harness at the ECU and goes to underdash and fuse panel.
Duh, they're hanging free.... 

Hooked them up to B+, turned the dist, and click-click-click.    Nothing
like the sweet smell of stale gas coming from injectors that have been
laying around.  ;^>

One side note about VATS.  Seems that this ECM and CAL (ABYA 5400) does not
have VATS.   It makes no difference if my VATS eliminator is hooked up or
not, even after it has sat powered-down for several minutes.   So either
I've got some oddball cal or the car never came with VATS.   This is
assuming that no vats == no injector drive at all while cranking.

Once I finally get a prom reader/burner I'll do further investigation, and
of course  upload the bin....

Thanks for your help guys.    I almost feel unworthy asking questions when
they end up with such dumbass answers.....

At 10:03 PM 10/26/99 -0400, you wrote:
>Got a scope, good.  Take the ECM cover off and take a look at the signal 
>on the gate of the output driver.  The one with the big hunk of metal
>attached to it.  If you have a signal, things are good up to there.
>Missing ground, burnt out driver?  There is only one driver in that
>ECM.
>
>Scot Sealander
>
>