You could remove that start signal connection from the ECU easily enough
as a test to see if the starter then cranks. On the forward edge of the
engine compartment double relay box is a 2 wire connector. One of the 2
wires is that starter 50 signal and that is where it joins the FI
harness. Simply unplug that 2 wire connector and try the starter. The
engine won't actually start up of course since the other wire of the 2
is power for the ECU etc.

Bentley diagram 1987, current tracks 29 and 5, connector T2m

Both the ECU and ICU get that starter 50 signal from the T2m

Mark

neil n wrote:
> Meant:
>
> ".... This no start happened shortly there after."
>
> And:
>
> "Could there be a short in the ECU or elsewhere in the 50 circuit that
> is causing the 50 circuit to short thus causing the starter not to
> engage or turn?"
>
> Thanks
>
> Neil.
>
> On Fri, Dec 14, 2012 at 11:30 PM, neil n <musomuso@gmail.com> wrote:
>
>> ..... This issue no start happened
>> shortly there after.
>>
>> Could there be a short in the ECU or elsewhere that is causing the 50
>> circuit to short thus causing the starter not to engage or turn?
>
>
> --
> Neil n
>
> 65 kb image Myford Ready For Assembly  http://tinyurl.com/64sx4rp
>
> '88 Slate Blue Westy to be named.
>
> '81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/
>
> Vanagon VAG Gas I4/VR Swap Google Group:
>
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
>