Author Topic: Dead transistors on Vems?  (Read 6101 times)

Offline PaulsM

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Dead transistors on Vems?
« on: March 26, 2017, 09:22:29 am »
Hello.
I use Vems ecu for my project.
Got home after long test run, everything was fine.
In the morning car won`t start - no spark.
I use m52 ignition coils, there is +12v to them.
I opened Vems case and saw that there are 18 transistors, probably 8 for sequential injectors, 8 for sequential ignition coils and 2 extra, right?



I took a multimeter un put it on restistance measuring.
As I can remember 10 out 18 transistors showed me around 11 kohm.
8 transistors showed me nothing. I tried to measure them inbetween three transistor legs in all possible variations and it didn`t show anything. So, I have 8 dead transistors?

I had one bad grounding on ECU, could it done damage?
I hope You can help me with answers, paid a lot for this ecu and have used it for a few months..

Will Vemstune recognise it as error? Where can I find it?
« Last Edit: March 26, 2017, 10:21:41 am by PaulsM »

Offline Kamuto

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Re: Dead transistors on Vems?
« Reply #1 on: March 28, 2017, 10:45:14 am »
btw, your vems does not look original or how to say that
Vems installer in Lithuania
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Offline gunni

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Re: Dead transistors on Vems?
« Reply #2 on: March 28, 2017, 12:23:23 pm »
So you had no spark on any of the coils?

Have you done a individual coil output test from ignition outputs visual?

Offline Sprocket

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Re: Dead transistors on Vems?
« Reply #3 on: March 28, 2017, 08:17:37 pm »
btw, your vems does not look original or how to say that

Looks like self build box................

Offline kurt06

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Re: Dead transistors on Vems?
« Reply #4 on: May 23, 2017, 05:14:34 am »
Have you figured out if that is not an original one?

Offline Kamuto

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Re: Dead transistors on Vems?
« Reply #5 on: August 09, 2017, 09:33:42 pm »
Have you figured out if that is not an original one?
that's truly not original one
Vems installer in Lithuania
[email protected]