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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Engine Management Units
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. |
#2
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Engine Management Units
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 |
#4
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Engine Management Units
On Friday, November 18, 2016 at 2:23:58 PM UTC-5, Cursitor Doom wrote:
Heck no! This is way out of my area of interest. I'd just like to temporarily hack the security on this thing to find out if it actually runs at all without wasting a penny more than I have to on it. The risk you take is, in the words of a friend, turning your CPU/EMU into a brick. They are more-or-less designed not to be overly friendly to hacks, and in some cases, even breathing funny on it can brick it. That is why a programmer with the correct software is infinitely safer than probing more-or-less randomly. Best of luck with it - and, if you have "auto recycling yards" in your neck of the woods, you might try getting an experimental unit there. It will be cheap. Peter Wieck Melrose Park, PA |
#5
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Engine Management Units
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