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 Post subject: coil problem
PostPosted: Mon Mar 26, 2018 12:53 pm 
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Joined: Sun Mar 18, 2018 4:27 am
Posts: 17
ECU Model: S80 Pro
Firmware Version: 82.16
Hello,
still busy converting my flat 4vw engine to efi.
Using the s80 and aem smartcoils (these ones http://www.aemelectronics.com/products/ignition-components/high-performance-coils/high-output-igbt-inductive-smart-coil )

I keep having the fuse for the 12v to the coils being blown.
In the past this wasn't a problem, only when i started to work with the pc this problem started.
Saw this topic and suspecting something like this:
http://www.dtaforum.com/viewtopic.php?f=5&t=1445
One time I connected 1 coil at a time to see if the fuse would still blow and them the coils came really hot (hopping there arn't broke).

This is the how the coils are wired

hope some one can help my in the right way.


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wiring coils.jpg
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 Post subject: Re: coil problem
PostPosted: Mon Mar 26, 2018 2:05 pm 
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Joined: Fri Feb 28, 2014 1:03 pm
Posts: 1070
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79
Those are amplified coils.
Have you ticked the Amplified Coils tick box in the ECU?


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 Post subject: Re: coil problem
PostPosted: Tue Mar 27, 2018 3:52 am 
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Joined: Sat Sep 10, 2011 8:20 am
Posts: 77
You have to tick Amplified Coils before you communicate with ecu otherwise you will burn coils anyway


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 Post subject: Re: coil problem
PostPosted: Tue Mar 27, 2018 5:08 am 
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Joined: Sun Mar 18, 2018 4:27 am
Posts: 17
ECU Model: S80 Pro
Firmware Version: 82.16
Hi,
No havent tick that on. Will see if i can find that tonight.

So this means my coils are broke?


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 Post subject: Re: coil problem
PostPosted: Tue Mar 27, 2018 6:30 am 
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Joined: Fri Feb 28, 2014 1:03 pm
Posts: 1070
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79
The fuse should have saved them.


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 Post subject: Re: coil problem
PostPosted: Tue Mar 27, 2018 10:59 am 
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Joined: Sun Mar 18, 2018 4:27 am
Posts: 17
ECU Model: S80 Pro
Firmware Version: 82.16
hi,
checked it on
fuse keeps blowing


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 Post subject: Re: coil problem
PostPosted: Tue Mar 27, 2018 5:10 pm 
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Joined: Tue Aug 02, 2011 12:08 pm
Posts: 2883
Location: Norn Iron
ECU Model: No ECU
Explain your diagram ( and picture is very small/low res )

What size fuse for power ?

A - looks ok.
B - looks ok
C - looks ok
D - looks like you're wrote 31/ground ? What does the 31 refer to ?
E - looks ok depending on fuse size.

With dwell at only 3ms, these coils will not draw a lot of current anyway.


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 Post subject: Re: coil problem
PostPosted: Wed Mar 28, 2018 12:46 am 
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Joined: Sun Mar 18, 2018 4:27 am
Posts: 17
ECU Model: S80 Pro
Firmware Version: 82.16
Hi,

31 is ground
First it was a 15amp fuse, then a 20amp. But same result

Will try to see if i can ipload it in better resolution.


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 Post subject: Re: coil problem
PostPosted: Wed Mar 28, 2018 5:28 am 
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Joined: Tue Aug 02, 2011 12:08 pm
Posts: 2883
Location: Norn Iron
ECU Model: No ECU
Again...what do you mean 31 is ground ?

Pin 31 on a DTA power connector is +12v live.


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 Post subject: Re: coil problem
PostPosted: Wed Mar 28, 2018 5:33 am 
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Joined: Sun Mar 18, 2018 4:27 am
Posts: 17
ECU Model: S80 Pro
Firmware Version: 82.16
Hi, its a mather of wrong explanation.
It’s ground (number 31 in bosch code)
Pin is connected with the body.


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