[T3] On my 73 square , what should I look at on the breather with a PCV

[William Jahn]

I checked all of this in 2009 . TS1 goes to pin 1 &13 on the ECU. I thought
I had a short on pin 13. At that time Ray on Samba told me internally pin
12 and 13 both connect internally. Thinking about it now that does not make
sense , just took his word . I tested both leads at the plug disconnected
and didn't find any shorts to ground in the harness from ECU to the
sensor,  only when I plugged in the ecu 13 showed a connection the ground .
I don't have anything showing how the ecu pins connect inside. It seems to
me 13 should not connect to ground . Yet TS2 does connect to the head for a
ground. I know 12 is the ground for the trigger points. anyone have any
info if 12  and 13 are internally connected inside the ECU on an E system?
If they don't then this is the issue.

On Wed, Sep 11, 2019 at 7:46 AM Jim Adney <jadney at vwtype3.org> wrote:

> On 10 Sep 2019 at 13:32, Phil Ostronic wrote:
>
> > Any chance the change when connecting the air temp sensor is due to
> > miswiring at some point?  Normally itTMs a mild effect but you get large
> > symptoms. Maybe you should warm it up then pull the ecu and take your
> > resistance measurements from the 25-pin MPC and not at the other ends of
> > the wires to be sure?  Maybe disconnect the sensor and read if that wire
> > has proper continuity and no odd shorts. Just thinking outside the box...
>
> That would be a really good thing to do, but it's really, really hard and
> time
> consuming to do with just a VOM/DVM in hand.
>
> I wonder if he could find someone in his area who has one of the Bosch
> D-jet
> testers. Those make all these tests, AND they make them quick and easy.
> It's just 15 minutes to get the brain out, 15 minutes, or less, to run the
> tests,
> and 15 more to reinstall the brain. Of course, if problems are found, add
> the
> time to correct them.
>
> --
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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