On Friday, November 18, 2016 at 6:52:19 AM UTC-5, Cursitor Doom wrote:
Hi all,

Has anyone had to work on one of these? If so, is it possible to probe
through the transparent conformal coating of the PCB to measure voltages
on traces without (more than minutely) damaging the coating?
Also, has anyone had any luck injecting voltages in the same way in order
to mimic signals the chips inside "expect" to see (for example to defeat
the ignition coding/immobiliser system?

thanks.

http://www.ebay.com/bhp/ecu-programmer may be what you want right out of the box. Especially if you are going to make a habit of it.

At the same time, you are not going to be able to repair/modify at the component level without damaging the coating. So, you might just have-at then repair the coating after the fact.

Peter Wieck
Melrose Park, PA