2.0 abf problem
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#1251636
(In Topic #150002)
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can anyone shed some light for me..??
fitted engine tried starting today and it wont run.
plug into vag com and it's giving immobiliser fault..
my question is does anyone know how to defeat immobiliser and if so how too..
cheers
adrian
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If your brought the complete conversion (Engine, GB, ECU, Loom & Key) then the transponder from the original key is matched to the ECU with a SKC code that mobilises the car. Therefore its just a case of duplicating the code form the original key into a blank transponder and getting a blade to match your mk1, which can either be very simple or very tricky depending on how well you know the person cutting the key (proof of vehicle ownership etc) most mechanics "know a guy" that will be able to match keys without all or any documents. OR some people glue the transponder to the receiver in the ECU that leaves the car mobilised all of the time.
If you didn't buy the job lot things can get a little more difficult. VagCom/VCDS removed the function from their software that allowed you to withdraw the SKC information from the ECU to reduce vehicle thefts. Older versions of VagCom with 'Dumb' interfaces (not connected to the internet) may be able to withdraw the SKC from the ECU, but are hard to come by as many garages upgrade their software meaning they need new interfaces. Its basically if you know the SKC code of the ECU you can get a key matched.
So if you don't have access to the above you will need two things:
1. someone that has a little mis-spent youth and some good software knowledge,
2. A key with a blank, codeable transponder that said person can match to the ECU.
Theres someone I use frequently, but he is unfortunately in Essex.
87 Caddy 16v 84 Cabby Gti 83 Driver ABF Build
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yeah bought the complete package engine, ecu, halo, chip from key…
just cant get immobiliser to deactivate, ecu is connecting to vagcom but wont allow access into immobiliser.???
when tested for matched keys the ecu is not recognising the chip is taped to halo..
have two friends that are pretty good with software but couldnt find old verion's of vagcom or vagtacho to defeat immobiliser..
cheers
adrian
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87 Caddy 16v 84 Cabby Gti 83 Driver ABF Build
Posted
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engine running, going to see if we can figure out how to defeat immobiliser completely…
cheers
adrian
Posted
MOTY 2013
the SKC can only be retrieved from the immobiliser box if you have a matched key in the ignition, if not then its a VW only job as they can retrieve a code via the central VW servers. What has changed is VW used to tell you what this code was for future use, but now they will not! makes no odds how old your software/cable is it still wont get the SKC without a key unless it can connect to the VW database.
in addition the important thing to get is a matched immobiliser box and chip/key, if you get this you can match it to your ecu easily with vag com or similar equipment in all of 2 minutes or less. the problem comes if you havent got a matched chip then the immobiliser box is basically scrap (or take it to vw, tricky when car no worky!) any post-96 golf, polo or seat will have a suitable immob box, but note around 1998 they changed slightly so they wont plug into an early loom, but if you take all the loom from the donor car then they'll work.
the alternative is send ecu off to be defeated by andyout, smiffster etc or get pre-96 ecu without an immobiliser. the ecu socket needs a slight trim but apart from that direct fit
Hello my name is John and I'm a dub addict.
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
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Cheers
Posted
MOTY 2013
Hello my name is John and I'm a dub addict.
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
Posted
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Posted
MOTY 2013
check the diagnostics wiring too. the ecu wire should run to the immobiliser box, then the diagnostics port runs to the other wire from immobiliser box
Hello my name is John and I'm a dub addict.
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
Posted
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Posted
Settling In
Posted
MOTY 2013
Hello my name is John and I'm a dub addict.
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
Posted
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had to remove chip from halo and allow the immobiliser to reset…
then put back in place and away you go, also mine had lost memory of chip so used vag com to put back in…
not sure how this was done…
no problems since
cheers
adrian
Posted
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The immobiliser sometimes disarms and sometimes doesn't but can't work out why- in vagcom immob section it has shown the signal was too weak once or twice- but once cleared that usually stays away- however in engine section I still get engine start blocked by immob - most times- but sometimes it goes away. I have just a loose transponder which in the mk3 was just taped to halo- taping in same position doesn't work- I seem to have to hold it centrally in halo for it to work but as I said - that doesn't always work- grrrrrrr
Posted
MOTY 2013
Hello my name is John and I'm a dub addict.
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
Posted
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Can you also educate me on why there is a hall sender and a crank sensor- I thought you only need one or other to tell dizzy when to fire? Is there a test for the knock sensor and /or hall sender I can do? Wouldnt vagcom tell me theres a fault with these anyway? I am a vagcom novice and when I say would a fault appear, I mean in the fault codes list under "engine".
Cheers
Posted
MOTY 2013
this is the one I used:
http://www.vwsonline.co.uk/car_parts_bristol/037-906-433a.html
as for the hall sensor, on the abf/agg/ady its just a cylinder 1 reference sensor, it only has 1 trigger window. the reason for this is to help the ecu, without the sensor the ecu wont know where cylinder 1 is, and so it goes into batch fire mode. with the hall sensor it can do fully sequential injection. plus it also affects knock detection. the ecu uses both knock sensors and the crank/cam signals to detect which cylinder exactly is pinking.
an abf./agg/ady will run ok with the hall sender disconnected, but its better with it connected
Hello my name is John and I'm a dub addict.
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
My wiring diagrams and other documents have moved here:
VAG Documents & Downloads
You'll need to sign into google/gmail for the link to work! (its free!)
Posted
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Posted
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Spark, check, fuel, check, no fault codes, check, timing spot on, check, head in bits, check mate
Doesn't even sound like its tryin to fire. Can't I tempt you into a no frills holiday to sunny Whitley Bay, the north east's bondi beach?! Or at least wonder if you have any suggestions?
Given the presence of spark, fuel etc, is it reasonable to think that the wiring is not the source of the problem? Just a little concerned that I followed the scattered bits of guidance off the forums in a monkey see monkey do fashion rather than taking time to comprehend things properly- do you perhaps have a checklist I could ogle?… don't know what else to think/do!?
cheers
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