coil problem

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broen messiaen
Posts: 17
Joined: Sun Mar 18, 2018 4:27 am
ECU Model: S80 Pro
Firmware Version: 82.16

coil problem

Post by broen messiaen »

Hello,
still busy converting my flat 4vw engine to efi.
Using the s80 and aem smartcoils (these ones http://www.aemelectronics.com/products/ ... 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:
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.
Attachments
wiring coils.jpg
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: coil problem

Post by Alex DTA »

Those are amplified coils.
Have you ticked the Amplified Coils tick box in the ECU?
rocar
Posts: 107
Joined: Sat Sep 10, 2011 8:20 am

Re: coil problem

Post by rocar »

You have to tick Amplified Coils before you communicate with ecu otherwise you will burn coils anyway
broen messiaen
Posts: 17
Joined: Sun Mar 18, 2018 4:27 am
ECU Model: S80 Pro
Firmware Version: 82.16

Re: coil problem

Post by broen messiaen »

Hi,
No havent tick that on. Will see if i can find that tonight.

So this means my coils are broke?
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: coil problem

Post by Alex DTA »

The fuse should have saved them.
broen messiaen
Posts: 17
Joined: Sun Mar 18, 2018 4:27 am
ECU Model: S80 Pro
Firmware Version: 82.16

Re: coil problem

Post by broen messiaen »

hi,
checked it on
fuse keeps blowing
Attachments
generalsetting.jpeg
stevieturbo
Posts: 3577
Joined: Tue Aug 02, 2011 12:08 pm
ECU Model: No ECU
Location: Norn Iron

Re: coil problem

Post by stevieturbo »

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.
broen messiaen
Posts: 17
Joined: Sun Mar 18, 2018 4:27 am
ECU Model: S80 Pro
Firmware Version: 82.16

Re: coil problem

Post by broen messiaen »

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.
stevieturbo
Posts: 3577
Joined: Tue Aug 02, 2011 12:08 pm
ECU Model: No ECU
Location: Norn Iron

Re: coil problem

Post by stevieturbo »

Again...what do you mean 31 is ground ?

Pin 31 on a DTA power connector is +12v live.
broen messiaen
Posts: 17
Joined: Sun Mar 18, 2018 4:27 am
ECU Model: S80 Pro
Firmware Version: 82.16

Re: coil problem

Post by broen messiaen »

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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