VEMS Community Forum

General Category => General Discussion => Topic started by: PaulsM on March 26, 2017, 09:22:29 am

Title: Dead transistors on Vems?
Post by: PaulsM 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?

(http://content30-foto.inbox.lv/albums/p/paulsm/Mail-Attachments/20170325-193820.sized.jpg)

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?

Title: Re: Dead transistors on Vems?
Post by: Kamuto on March 28, 2017, 10:45:14 am

btw, your vems does not look original or how to say that

Title: Re: Dead transistors on Vems?
Post by: gunni 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?

Title: Re: Dead transistors on Vems?
Post by: Sprocket on March 28, 2017, 08:17:37 pm

Quote from: Kamuto on March 28, 2017, 10:45:14 am

btw, your vems does not look original or how to say that

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

Title: Re: Dead transistors on Vems?
Post by: kurt06 on May 23, 2017, 05:14:34 am

Have you figured out if that is not an original one?

Title: Re: Dead transistors on Vems?
Post by: Kamuto on August 09, 2017, 09:33:42 pm

Quote from: kurt06 on May 23, 2017, 05:14:34 am

Have you figured out if that is not an original one?

that's truly not original one