It is currently Sat Jun 23, 2018 4:54 am



Post new topic Reply to topic  [ 13 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: crank signal problem
PostPosted: Sun Mar 18, 2018 4:41 am 
Offline

Joined: Sun Mar 18, 2018 4:27 am
Posts: 17
ECU Model: S80 Pro
Firmware Version: 82.16
Hello,
I'm having a problem to have crank sensor signal.

So I'm converting a vw flat4 engine to efi
use a s80 ecu and a dubshop crank sensor kit, this one:
http://thedubshop.com/crank-trigger-package-type-4-vw/
I can get the ecu to read the signal provided from the sensor.

Have tested the sensor with a 12v and 5v signal from a external source and the measurments on the volt meter goes from 12v to 0.25v and 5v to 0.25v.
So this tells me that the sensor is working and the distance between the sensor and wheel is good, correct?

If I meassure between the sensor when connected to ecu and cranking the signal stays on 4.8v.
On the oscilloscope I have no signal at al.

What could be wrong?
I assume the ecu knows from itself if it's connected to a hall or mag sensor( this doesn't need to be selected)?

Any help would be much appriciated!

Greetings Broen


Top
 Profile  
 
 Post subject: Re: crank signal problem
PostPosted: Sun Mar 18, 2018 5:30 am 
Offline

Joined: Mon Aug 01, 2011 8:20 am
Posts: 174
Check that the signal pin is in the correct hole in the connector to suit your hall effect sensor(pin 13) magnetic sensor (pin12).


Top
 Profile  
 
 Post subject: Re: crank signal problem
PostPosted: Sun Mar 18, 2018 5:47 am 
Offline

Joined: Sun Mar 18, 2018 4:27 am
Posts: 17
ECU Model: S80 Pro
Firmware Version: 82.16
hi,
checked that before. Have measurrd al the wires with multimeter to be sure wiring is ok.

Should it be possible that the signal measuured by the multimeter is 'stronger' than the one from the ecu? And the sensor need to be closer? The manual of the sensor say 3 mm or less gap, it's on 2/2.1mm now.


Top
 Profile  
 
 Post subject: Re: crank signal problem
PostPosted: Sun Mar 18, 2018 5:56 am 
Offline

Joined: Fri Feb 28, 2014 1:03 pm
Posts: 1030
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79
The gap on those sensors is normally 1 - 2mm.
Try moving it closer, starting with around 1.5mm.


Top
 Profile  
 
 Post subject: Re: crank signal problem
PostPosted: Sun Mar 18, 2018 6:27 am 
Offline

Joined: Tue Aug 02, 2011 12:08 pm
Posts: 2852
Location: Norn Iron
ECU Model: No ECU
With scope or other...if you pass a screwdriver or other ferrous metal object over the sensor, you should see it switch hi-lo ( ie any pass would be a tooth )


Top
 Profile  
 
 Post subject: Re: crank signal problem
PostPosted: Mon Mar 19, 2018 1:11 pm 
Offline

Joined: Sun Mar 18, 2018 4:27 am
Posts: 17
ECU Model: S80 Pro
Firmware Version: 82.16
hello,
thanks for the reply's

so moved the sensor to 1.5mm and no change, went even closer nothing changed.

if i do the test with the external source at 1.5mm it works (5v to 0.6v)
if i measure at the signal wire when sensor is connected to ecu it stays on 4.6v.

any ideas what i could try?

thanks


Top
 Profile  
 
 Post subject: Re: crank signal problem
PostPosted: Mon Mar 19, 2018 1:41 pm 
Offline

Joined: Sun Jan 27, 2013 6:08 pm
Posts: 246
ECU Model: S60 Pro
Firmware Version: 29
You've fitted a alloy toothed wheel in error?


Top
 Profile  
 
 Post subject: Re: crank signal problem
PostPosted: Mon Mar 19, 2018 2:05 pm 
Offline

Joined: Fri Feb 28, 2014 1:03 pm
Posts: 1030
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79
Is it an NPN normally open sensor?


Top
 Profile  
 
 Post subject: Re: crank signal problem
PostPosted: Mon Mar 19, 2018 2:11 pm 
Offline

Joined: Sun Mar 18, 2018 4:27 am
Posts: 17
ECU Model: S80 Pro
Firmware Version: 82.16
No, it's magnetic.
If i take it lose and slide it by hand over the sensor i feel it being 'pulled' to it.

Have to say the magnetic force is stronger when i use the extrenal source then the 5v source from ecu, but that's probably normal.



I have one of these kit also
https://vwspeedshop.com/product.php?productid=16826&cat=514&page=1
maybe I should try it and see if i can make connection with that one.
I have the other wire for it.

@Alex,
when its standing for a tooth the voltage drops and when it's between tooth it's 5v.
Don't now if that's a open or closed one.


Top
 Profile  
 
 Post subject: Re: crank signal problem
PostPosted: Mon Mar 19, 2018 3:56 pm 
Offline

Joined: Tue Aug 02, 2011 12:08 pm
Posts: 2852
Location: Norn Iron
ECU Model: No ECU
What is magnetic ?


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ]  Go to page 1, 2  Next

Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Theme designed by stylerbb.net © 2008
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
All times are UTC - 5 hours