I've accidentally miss-wired my 3-wire pwm idle driver board (from Glensgarage), the supply voltage polarity was kept swapped for several hours. Now the board is not working anymore. Does anybody has a suggestion about which part is most sensitive to wrong voltage polarity and which is failing now? None of the components looks funny, but I'm pretty sure the problem is in the board, as the output voltage is only 3,5volt, and the input trigger from the ECU is 12volt, I've logged it with an oscilloscope. I also changed the idle valve with a new one, no result. The board was working before.
Any suggestions?
Thanks,
Wout
3-wire idle valve drive board miswired: components burnt?
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Gixfighter
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3-wire idle valve drive board miswired: components burnt?
Trying to set up my first MS-II on a Volvo 480 Turbo engine
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Glen Hoag
Re: 3-wire idle valve drive board miswired: components burnt?
You can find the schematics for this board at http://www.glensgarage.com/3wire/. Depending on how you connected it, different parts may have been damaged. I'm sure I can help you get this sorted out without too much trouble.
--Glen
--Glen